./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_codestructure_steplocals_file-28.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9434bcca-57c6-4efa-8978-e14eafd34291/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9434bcca-57c6-4efa-8978-e14eafd34291/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_9434bcca-57c6-4efa-8978-e14eafd34291/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9434bcca-57c6-4efa-8978-e14eafd34291/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_codestructure_steplocals_file-28.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9434bcca-57c6-4efa-8978-e14eafd34291/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_9434bcca-57c6-4efa-8978-e14eafd34291/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 d2c75dca6200a745b1e9a10165d81ba987342ada267360da9c3346293958a99c --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:25:35,663 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:25:35,748 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9434bcca-57c6-4efa-8978-e14eafd34291/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-12 02:25:35,757 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:25:35,758 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:25:35,798 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:25:35,799 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:25:35,799 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:25:35,800 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:25:35,805 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:25:35,806 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:25:35,806 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:25:35,807 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:25:35,809 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:25:35,809 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:25:35,809 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:25:35,810 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:25:35,810 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:25:35,811 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:25:35,811 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:25:35,811 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:25:35,812 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:25:35,812 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:25:35,813 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:25:35,813 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:25:35,814 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:25:35,814 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:25:35,815 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:25:35,815 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:25:35,816 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:25:35,817 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:25:35,817 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:25:35,817 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:25:35,818 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:25:35,818 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:25:35,818 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:25:35,818 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:25:35,819 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:25:35,819 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:25:35,819 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_9434bcca-57c6-4efa-8978-e14eafd34291/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9434bcca-57c6-4efa-8978-e14eafd34291/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d2c75dca6200a745b1e9a10165d81ba987342ada267360da9c3346293958a99c [2023-11-12 02:25:36,115 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:25:36,137 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:25:36,139 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:25:36,141 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:25:36,141 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:25:36,142 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9434bcca-57c6-4efa-8978-e14eafd34291/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/hardness-nfm22/hardness_codestructure_steplocals_file-28.i [2023-11-12 02:25:39,249 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:25:39,498 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:25:39,513 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9434bcca-57c6-4efa-8978-e14eafd34291/sv-benchmarks/c/hardness-nfm22/hardness_codestructure_steplocals_file-28.i [2023-11-12 02:25:39,525 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9434bcca-57c6-4efa-8978-e14eafd34291/bin/uautomizer-verify-uTZkv6EMXl/data/6a697a94a/764fa76d9cfd4a238232d11c583b775d/FLAGfa33b2494 [2023-11-12 02:25:39,538 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9434bcca-57c6-4efa-8978-e14eafd34291/bin/uautomizer-verify-uTZkv6EMXl/data/6a697a94a/764fa76d9cfd4a238232d11c583b775d [2023-11-12 02:25:39,540 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:25:39,542 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:25:39,544 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:25:39,544 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:25:39,550 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:25:39,551 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:25:39" (1/1) ... [2023-11-12 02:25:39,552 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e1ea903 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:25:39, skipping insertion in model container [2023-11-12 02:25:39,553 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:25:39" (1/1) ... [2023-11-12 02:25:39,596 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:25:39,747 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_9434bcca-57c6-4efa-8978-e14eafd34291/sv-benchmarks/c/hardness-nfm22/hardness_codestructure_steplocals_file-28.i[917,930] [2023-11-12 02:25:39,845 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:25:39,858 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:25:39,870 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_9434bcca-57c6-4efa-8978-e14eafd34291/sv-benchmarks/c/hardness-nfm22/hardness_codestructure_steplocals_file-28.i[917,930] [2023-11-12 02:25:39,916 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:25:39,938 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:25:39,939 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:25:39 WrapperNode [2023-11-12 02:25:39,939 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:25:39,940 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:25:39,941 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:25:39,941 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:25:39,949 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:25:39" (1/1) ... [2023-11-12 02:25:39,965 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:25:39" (1/1) ... [2023-11-12 02:25:40,032 INFO L138 Inliner]: procedures = 26, calls = 45, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 187 [2023-11-12 02:25:40,033 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:25:40,033 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:25:40,033 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:25:40,034 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:25:40,044 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:25:39" (1/1) ... [2023-11-12 02:25:40,044 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:25:39" (1/1) ... [2023-11-12 02:25:40,061 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:25:39" (1/1) ... [2023-11-12 02:25:40,062 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:25:39" (1/1) ... [2023-11-12 02:25:40,084 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:25:39" (1/1) ... [2023-11-12 02:25:40,088 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:25:39" (1/1) ... [2023-11-12 02:25:40,094 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:25:39" (1/1) ... [2023-11-12 02:25:40,099 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:25:39" (1/1) ... [2023-11-12 02:25:40,111 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:25:40,112 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:25:40,112 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:25:40,112 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:25:40,113 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:25:39" (1/1) ... [2023-11-12 02:25:40,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:25:40,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9434bcca-57c6-4efa-8978-e14eafd34291/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:25:40,147 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9434bcca-57c6-4efa-8978-e14eafd34291/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:25:40,185 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9434bcca-57c6-4efa-8978-e14eafd34291/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:25:40,195 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:25:40,195 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-12 02:25:40,196 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-12 02:25:40,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:25:40,197 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:25:40,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:25:40,336 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:25:40,339 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:25:40,995 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:25:41,003 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:25:41,003 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-12 02:25:41,006 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:25:41 BoogieIcfgContainer [2023-11-12 02:25:41,006 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:25:41,008 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:25:41,017 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:25:41,020 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:25:41,021 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:25:39" (1/3) ... [2023-11-12 02:25:41,021 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@736bd387 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:25:41, skipping insertion in model container [2023-11-12 02:25:41,022 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:25:39" (2/3) ... [2023-11-12 02:25:41,022 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@736bd387 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:25:41, skipping insertion in model container [2023-11-12 02:25:41,022 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:25:41" (3/3) ... [2023-11-12 02:25:41,023 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_codestructure_steplocals_file-28.i [2023-11-12 02:25:41,050 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:25:41,051 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 02:25:41,102 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:25:41,109 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;@651f81d4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:25:41,109 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 02:25:41,117 INFO L276 IsEmpty]: Start isEmpty. Operand has 90 states, 55 states have (on average 1.3454545454545455) internal successors, (74), 56 states have internal predecessors, (74), 32 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-12 02:25:41,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2023-11-12 02:25:41,136 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:25:41,137 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:25:41,138 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:25:41,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:25:41,145 INFO L85 PathProgramCache]: Analyzing trace with hash 1014879362, now seen corresponding path program 1 times [2023-11-12 02:25:41,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:25:41,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742980627] [2023-11-12 02:25:41,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:25:41,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:25:41,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:25:41,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:25:41,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742980627] [2023-11-12 02:25:41,442 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-12 02:25:41,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [111800800] [2023-11-12 02:25:41,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:25:41,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:25:41,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9434bcca-57c6-4efa-8978-e14eafd34291/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:25:41,447 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9434bcca-57c6-4efa-8978-e14eafd34291/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:25:41,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9434bcca-57c6-4efa-8978-e14eafd34291/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 02:25:41,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:25:41,715 INFO L262 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-12 02:25:41,741 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:25:41,820 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 1922 trivial. 0 not checked. [2023-11-12 02:25:41,821 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:25:41,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [111800800] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:25:41,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:25:41,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:25:41,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943811368] [2023-11-12 02:25:41,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:25:41,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 02:25:41,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:25:41,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 02:25:41,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 02:25:41,890 INFO L87 Difference]: Start difference. First operand has 90 states, 55 states have (on average 1.3454545454545455) internal successors, (74), 56 states have internal predecessors, (74), 32 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) Second operand has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 2 states have call successors, (32) [2023-11-12 02:25:41,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:25:41,953 INFO L93 Difference]: Finished difference Result 173 states and 302 transitions. [2023-11-12 02:25:41,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 02:25:41,955 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 2 states have call successors, (32) Word has length 201 [2023-11-12 02:25:41,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:25:41,964 INFO L225 Difference]: With dead ends: 173 [2023-11-12 02:25:41,964 INFO L226 Difference]: Without dead ends: 86 [2023-11-12 02:25:41,973 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 200 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 02:25:41,978 INFO L413 NwaCegarLoop]: 131 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, 131 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 02:25:41,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:25:41,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2023-11-12 02:25:42,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2023-11-12 02:25:42,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 52 states have (on average 1.2884615384615385) internal successors, (67), 52 states have internal predecessors, (67), 32 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-12 02:25:42,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 131 transitions. [2023-11-12 02:25:42,029 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 131 transitions. Word has length 201 [2023-11-12 02:25:42,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:25:42,029 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 131 transitions. [2023-11-12 02:25:42,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 2 states have call successors, (32) [2023-11-12 02:25:42,030 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 131 transitions. [2023-11-12 02:25:42,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2023-11-12 02:25:42,035 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:25:42,035 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:25:42,040 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9434bcca-57c6-4efa-8978-e14eafd34291/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-12 02:25:42,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9434bcca-57c6-4efa-8978-e14eafd34291/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:25:42,238 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:25:42,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:25:42,238 INFO L85 PathProgramCache]: Analyzing trace with hash 486093706, now seen corresponding path program 1 times [2023-11-12 02:25:42,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:25:42,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607674328] [2023-11-12 02:25:42,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:25:42,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:25:42,322 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:25:42,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [918249385] [2023-11-12 02:25:42,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:25:42,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:25:42,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9434bcca-57c6-4efa-8978-e14eafd34291/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:25:42,324 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9434bcca-57c6-4efa-8978-e14eafd34291/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:25:42,329 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9434bcca-57c6-4efa-8978-e14eafd34291/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 02:25:42,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:25:42,529 INFO L262 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-12 02:25:42,540 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:26:02,920 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2023-11-12 02:26:02,921 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:26:02,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:26:02,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607674328] [2023-11-12 02:26:02,921 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:26:02,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [918249385] [2023-11-12 02:26:02,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [918249385] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:26:02,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:26:02,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-12 02:26:02,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268871866] [2023-11-12 02:26:02,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:26:02,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-12 02:26:02,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:26:02,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-12 02:26:02,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-11-12 02:26:02,926 INFO L87 Difference]: Start difference. First operand 86 states and 131 transitions. Second operand has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-12 02:26:05,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:26:05,301 INFO L93 Difference]: Finished difference Result 284 states and 423 transitions. [2023-11-12 02:26:05,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-12 02:26:05,309 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) Word has length 201 [2023-11-12 02:26:05,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:26:05,314 INFO L225 Difference]: With dead ends: 284 [2023-11-12 02:26:05,314 INFO L226 Difference]: Without dead ends: 201 [2023-11-12 02:26:05,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2023-11-12 02:26:05,317 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 245 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 470 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-12 02:26:05,318 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 470 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-12 02:26:05,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2023-11-12 02:26:05,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 110. [2023-11-12 02:26:05,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 76 states have (on average 1.355263157894737) internal successors, (103), 76 states have internal predecessors, (103), 32 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-12 02:26:05,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 167 transitions. [2023-11-12 02:26:05,358 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 167 transitions. Word has length 201 [2023-11-12 02:26:05,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:26:05,364 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 167 transitions. [2023-11-12 02:26:05,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-12 02:26:05,365 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 167 transitions. [2023-11-12 02:26:05,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2023-11-12 02:26:05,375 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:26:05,376 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:26:05,387 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9434bcca-57c6-4efa-8978-e14eafd34291/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-12 02:26:05,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9434bcca-57c6-4efa-8978-e14eafd34291/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:26:05,582 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:26:05,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:26:05,583 INFO L85 PathProgramCache]: Analyzing trace with hash 1187158284, now seen corresponding path program 1 times [2023-11-12 02:26:05,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:26:05,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607827151] [2023-11-12 02:26:05,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:26:05,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:26:05,678 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:26:05,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1382592676] [2023-11-12 02:26:05,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:26:05,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:26:05,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9434bcca-57c6-4efa-8978-e14eafd34291/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:26:05,693 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9434bcca-57c6-4efa-8978-e14eafd34291/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:26:05,709 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9434bcca-57c6-4efa-8978-e14eafd34291/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-12 02:26:05,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:26:05,842 INFO L262 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-12 02:26:05,851 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:26:25,304 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2023-11-12 02:26:25,304 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:26:25,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:26:25,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607827151] [2023-11-12 02:26:25,305 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:26:25,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1382592676] [2023-11-12 02:26:25,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1382592676] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:26:25,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:26:25,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-12 02:26:25,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286837095] [2023-11-12 02:26:25,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:26:25,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-12 02:26:25,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:26:25,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-12 02:26:25,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-11-12 02:26:25,309 INFO L87 Difference]: Start difference. First operand 110 states and 167 transitions. Second operand has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-12 02:26:27,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:26:27,998 INFO L93 Difference]: Finished difference Result 299 states and 445 transitions. [2023-11-12 02:26:27,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-12 02:26:28,000 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) Word has length 201 [2023-11-12 02:26:28,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:26:28,003 INFO L225 Difference]: With dead ends: 299 [2023-11-12 02:26:28,004 INFO L226 Difference]: Without dead ends: 192 [2023-11-12 02:26:28,005 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2023-11-12 02:26:28,006 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 247 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 603 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-12 02:26:28,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [247 Valid, 603 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-12 02:26:28,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2023-11-12 02:26:28,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 119. [2023-11-12 02:26:28,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 85 states have (on average 1.3647058823529412) internal successors, (116), 85 states have internal predecessors, (116), 32 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-12 02:26:28,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 180 transitions. [2023-11-12 02:26:28,024 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 180 transitions. Word has length 201 [2023-11-12 02:26:28,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:26:28,025 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 180 transitions. [2023-11-12 02:26:28,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2023-11-12 02:26:28,026 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 180 transitions. [2023-11-12 02:26:28,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2023-11-12 02:26:28,029 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:26:28,029 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:26:28,041 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9434bcca-57c6-4efa-8978-e14eafd34291/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-12 02:26:28,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9434bcca-57c6-4efa-8978-e14eafd34291/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:26:28,236 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:26:28,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:26:28,237 INFO L85 PathProgramCache]: Analyzing trace with hash 744259144, now seen corresponding path program 1 times [2023-11-12 02:26:28,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:26:28,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968535713] [2023-11-12 02:26:28,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:26:28,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:26:28,309 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:26:28,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1312631616] [2023-11-12 02:26:28,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:26:28,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:26:28,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9434bcca-57c6-4efa-8978-e14eafd34291/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:26:28,329 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9434bcca-57c6-4efa-8978-e14eafd34291/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:26:28,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9434bcca-57c6-4efa-8978-e14eafd34291/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-12 02:26:28,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:26:28,502 INFO L262 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-12 02:26:28,508 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:26:29,196 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 1185 proven. 87 refuted. 0 times theorem prover too weak. 712 trivial. 0 not checked. [2023-11-12 02:26:29,202 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:26:29,930 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 75 proven. 18 refuted. 0 times theorem prover too weak. 1891 trivial. 0 not checked. [2023-11-12 02:26:29,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:26:29,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968535713] [2023-11-12 02:26:29,931 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:26:29,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1312631616] [2023-11-12 02:26:29,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1312631616] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:26:29,931 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-12 02:26:29,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 19 [2023-11-12 02:26:29,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204746277] [2023-11-12 02:26:29,932 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-12 02:26:29,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-12 02:26:29,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:26:29,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-12 02:26:29,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2023-11-12 02:26:29,936 INFO L87 Difference]: Start difference. First operand 119 states and 180 transitions. Second operand has 19 states, 19 states have (on average 4.315789473684211) internal successors, (82), 19 states have internal predecessors, (82), 4 states have call successors, (56), 3 states have call predecessors, (56), 6 states have return successors, (57), 4 states have call predecessors, (57), 4 states have call successors, (57)