./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/popl20-more-buffer-mult3.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-more-buffer-mult3.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7888761977ccc49b1a75199021e374591654c6a4364e63bfc6c86e1c7bb7d64b --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 02:42:03,462 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 02:42:03,551 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2024-11-14 02:42:03,558 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 02:42:03,558 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 02:42:03,592 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 02:42:03,594 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 02:42:03,594 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 02:42:03,595 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 02:42:03,595 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 02:42:03,596 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 02:42:03,596 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 02:42:03,596 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 02:42:03,596 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 02:42:03,597 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 02:42:03,597 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 02:42:03,597 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 02:42:03,597 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 02:42:03,597 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 02:42:03,597 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 02:42:03,597 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 02:42:03,597 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 02:42:03,598 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-14 02:42:03,599 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-14 02:42:03,599 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 02:42:03,599 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 02:42:03,599 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 02:42:03,600 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 02:42:03,600 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 02:42:03,600 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-14 02:42:03,600 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-14 02:42:03,600 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-14 02:42:03,600 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 02:42:03,600 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-14 02:42:03,600 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 02:42:03,601 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-14 02:42:03,601 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 02:42:03,601 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 02:42:03,601 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 02:42:03,602 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 02:42:03,602 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 02:42:03,602 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 02:42:03,602 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 02:42:03,602 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 02:42:03,602 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 02:42:03,602 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 02:42:03,602 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 02:42:03,602 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 02:42:03,602 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 02:42:03,602 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E 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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan 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 -> 7888761977ccc49b1a75199021e374591654c6a4364e63bfc6c86e1c7bb7d64b [2024-11-14 02:42:03,911 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 02:42:03,924 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 02:42:03,928 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 02:42:03,929 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 02:42:03,930 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 02:42:03,931 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/weaver/popl20-more-buffer-mult3.wvr.c Unable to find full path for "g++" [2024-11-14 02:42:05,872 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 02:42:06,204 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 02:42:06,206 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/sv-benchmarks/c/weaver/popl20-more-buffer-mult3.wvr.c [2024-11-14 02:42:06,218 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/data/9a34f2d5a/5f81115792d94d6ab93c3b36ff3f3572/FLAG1fa9273a4 [2024-11-14 02:42:06,241 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/data/9a34f2d5a/5f81115792d94d6ab93c3b36ff3f3572 [2024-11-14 02:42:06,244 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 02:42:06,246 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 02:42:06,249 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 02:42:06,249 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 02:42:06,255 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 02:42:06,256 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 02:42:06" (1/1) ... [2024-11-14 02:42:06,257 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1752d854 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:42:06, skipping insertion in model container [2024-11-14 02:42:06,257 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 02:42:06" (1/1) ... [2024-11-14 02:42:06,284 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 02:42:06,509 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 02:42:06,514 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 02:42:06,527 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 02:42:06,566 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 02:42:06,586 INFO L204 MainTranslator]: Completed translation [2024-11-14 02:42:06,587 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:42:06 WrapperNode [2024-11-14 02:42:06,587 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 02:42:06,588 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 02:42:06,588 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 02:42:06,588 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 02:42:06,595 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:42:06" (1/1) ... [2024-11-14 02:42:06,606 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:42:06" (1/1) ... [2024-11-14 02:42:06,654 INFO L138 Inliner]: procedures = 26, calls = 61, calls flagged for inlining = 19, calls inlined = 23, statements flattened = 292 [2024-11-14 02:42:06,655 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 02:42:06,658 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 02:42:06,659 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 02:42:06,659 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 02:42:06,672 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:42:06" (1/1) ... [2024-11-14 02:42:06,672 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:42:06" (1/1) ... [2024-11-14 02:42:06,681 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:42:06" (1/1) ... [2024-11-14 02:42:06,682 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:42:06" (1/1) ... [2024-11-14 02:42:06,703 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:42:06" (1/1) ... [2024-11-14 02:42:06,713 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:42:06" (1/1) ... [2024-11-14 02:42:06,715 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:42:06" (1/1) ... [2024-11-14 02:42:06,717 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:42:06" (1/1) ... [2024-11-14 02:42:06,727 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 02:42:06,728 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 02:42:06,728 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 02:42:06,728 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 02:42:06,732 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:42:06" (1/1) ... [2024-11-14 02:42:06,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 02:42:06,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 02:42:06,766 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 02:42:06,773 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 02:42:06,797 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 02:42:06,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-14 02:42:06,798 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-14 02:42:06,798 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-14 02:42:06,798 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-14 02:42:06,798 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-14 02:42:06,798 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-14 02:42:06,798 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-14 02:42:06,798 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-14 02:42:06,799 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-11-14 02:42:06,799 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-11-14 02:42:06,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-14 02:42:06,799 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-14 02:42:06,799 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-14 02:42:06,799 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-14 02:42:06,799 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 02:42:06,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 02:42:06,801 WARN L207 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-14 02:42:06,954 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 02:42:06,956 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 02:42:07,688 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-14 02:42:07,688 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 02:42:08,214 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 02:42:08,214 INFO L316 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-14 02:42:08,215 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 02:42:08 BoogieIcfgContainer [2024-11-14 02:42:08,215 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 02:42:08,217 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 02:42:08,218 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 02:42:08,223 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 02:42:08,223 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 02:42:06" (1/3) ... [2024-11-14 02:42:08,223 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38e6ea4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 02:42:08, skipping insertion in model container [2024-11-14 02:42:08,224 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:42:06" (2/3) ... [2024-11-14 02:42:08,224 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38e6ea4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 02:42:08, skipping insertion in model container [2024-11-14 02:42:08,224 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 02:42:08" (3/3) ... [2024-11-14 02:42:08,226 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-mult3.wvr.c [2024-11-14 02:42:08,243 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 02:42:08,245 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-more-buffer-mult3.wvr.c that has 5 procedures, 61 locations, 1 initial locations, 6 loop locations, and 14 error locations. [2024-11-14 02:42:08,245 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-14 02:42:08,370 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-14 02:42:08,406 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 73 places, 66 transitions, 160 flow [2024-11-14 02:42:09,299 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 12507 states, 12421 states have (on average 4.419209403429676) internal successors, (54891), 12506 states have internal predecessors, (54891), 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) [2024-11-14 02:42:09,348 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 02:42:09,364 INFO L333 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, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, 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;@592a6fc3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 02:42:09,364 INFO L334 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2024-11-14 02:42:09,416 INFO L276 IsEmpty]: Start isEmpty. Operand has 12507 states, 12421 states have (on average 4.419209403429676) internal successors, (54891), 12506 states have internal predecessors, (54891), 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) [2024-11-14 02:42:09,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-14 02:42:09,434 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:42:09,435 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-14 02:42:09,436 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-14 02:42:09,444 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:42:09,449 INFO L85 PathProgramCache]: Analyzing trace with hash 849056, now seen corresponding path program 1 times [2024-11-14 02:42:09,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:42:09,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733937275] [2024-11-14 02:42:09,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:42:09,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:42:09,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:42:09,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:42:09,891 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:42:09,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733937275] [2024-11-14 02:42:09,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733937275] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:42:09,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:42:09,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-14 02:42:09,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005547302] [2024-11-14 02:42:09,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:42:09,902 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 02:42:09,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:42:09,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 02:42:09,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 02:42:09,961 INFO L87 Difference]: Start difference. First operand has 12507 states, 12421 states have (on average 4.419209403429676) internal successors, (54891), 12506 states have internal predecessors, (54891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2024-11-14 02:42:10,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:42:10,501 INFO L93 Difference]: Finished difference Result 12507 states and 54891 transitions. [2024-11-14 02:42:10,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 02:42:10,504 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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 3 [2024-11-14 02:42:10,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:42:10,732 INFO L225 Difference]: With dead ends: 12507 [2024-11-14 02:42:10,732 INFO L226 Difference]: Without dead ends: 12503 [2024-11-14 02:42:10,745 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 02:42:10,749 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 5 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 02:42:10,751 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 34 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 02:42:10,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12503 states. [2024-11-14 02:42:11,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12503 to 12503. [2024-11-14 02:42:11,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12503 states, 12420 states have (on average 4.419243156199678) internal successors, (54887), 12502 states have internal predecessors, (54887), 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) [2024-11-14 02:42:11,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12503 states to 12503 states and 54887 transitions. [2024-11-14 02:42:11,978 INFO L78 Accepts]: Start accepts. Automaton has 12503 states and 54887 transitions. Word has length 3 [2024-11-14 02:42:11,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:42:11,980 INFO L471 AbstractCegarLoop]: Abstraction has 12503 states and 54887 transitions. [2024-11-14 02:42:11,980 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2024-11-14 02:42:11,981 INFO L276 IsEmpty]: Start isEmpty. Operand 12503 states and 54887 transitions. [2024-11-14 02:42:11,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-14 02:42:11,981 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:42:11,981 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-14 02:42:11,981 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-14 02:42:11,982 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-14 02:42:11,984 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:42:11,985 INFO L85 PathProgramCache]: Analyzing trace with hash 849057, now seen corresponding path program 1 times [2024-11-14 02:42:11,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:42:11,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493730746] [2024-11-14 02:42:11,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:42:11,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:42:12,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:42:12,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:42:12,447 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:42:12,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493730746] [2024-11-14 02:42:12,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493730746] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:42:12,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:42:12,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 02:42:12,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719561578] [2024-11-14 02:42:12,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:42:12,449 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 02:42:12,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:42:12,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 02:42:12,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 02:42:12,450 INFO L87 Difference]: Start difference. First operand 12503 states and 54887 transitions. Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 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) [2024-11-14 02:42:13,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:42:13,092 INFO L93 Difference]: Finished difference Result 12506 states and 54891 transitions. [2024-11-14 02:42:13,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 02:42:13,093 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 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 3 [2024-11-14 02:42:13,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:42:13,291 INFO L225 Difference]: With dead ends: 12506 [2024-11-14 02:42:13,294 INFO L226 Difference]: Without dead ends: 12505 [2024-11-14 02:42:13,313 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-14 02:42:13,318 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 1 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 02:42:13,319 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 53 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 02:42:13,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12505 states. [2024-11-14 02:42:13,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12505 to 12505. [2024-11-14 02:42:13,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12505 states, 12422 states have (on average 4.418773144421189) internal successors, (54890), 12504 states have internal predecessors, (54890), 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) [2024-11-14 02:42:14,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12505 states to 12505 states and 54890 transitions. [2024-11-14 02:42:14,244 INFO L78 Accepts]: Start accepts. Automaton has 12505 states and 54890 transitions. Word has length 3 [2024-11-14 02:42:14,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:42:14,245 INFO L471 AbstractCegarLoop]: Abstraction has 12505 states and 54890 transitions. [2024-11-14 02:42:14,245 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 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) [2024-11-14 02:42:14,246 INFO L276 IsEmpty]: Start isEmpty. Operand 12505 states and 54890 transitions. [2024-11-14 02:42:14,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-14 02:42:14,247 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:42:14,247 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-14 02:42:14,247 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-14 02:42:14,247 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-14 02:42:14,248 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:42:14,248 INFO L85 PathProgramCache]: Analyzing trace with hash 26322624, now seen corresponding path program 1 times [2024-11-14 02:42:14,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:42:14,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372245270] [2024-11-14 02:42:14,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:42:14,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:42:14,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:42:14,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:42:14,653 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:42:14,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372245270] [2024-11-14 02:42:14,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372245270] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:42:14,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:42:14,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 02:42:14,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634671430] [2024-11-14 02:42:14,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:42:14,655 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 02:42:14,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:42:14,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 02:42:14,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 02:42:14,657 INFO L87 Difference]: Start difference. First operand 12505 states and 54890 transitions. Second operand has 5 states, 4 states have (on average 1.0) internal successors, (4), 4 states have internal predecessors, (4), 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) [2024-11-14 02:42:15,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:42:15,027 INFO L93 Difference]: Finished difference Result 12508 states and 54894 transitions. [2024-11-14 02:42:15,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 02:42:15,029 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.0) internal successors, (4), 4 states have internal predecessors, (4), 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 4 [2024-11-14 02:42:15,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:42:15,323 INFO L225 Difference]: With dead ends: 12508 [2024-11-14 02:42:15,323 INFO L226 Difference]: Without dead ends: 12507 [2024-11-14 02:42:15,336 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-14 02:42:15,340 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 64 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 02:42:15,341 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 53 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 02:42:15,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12507 states. [2024-11-14 02:42:16,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12507 to 12507. [2024-11-14 02:42:16,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12507 states, 12424 states have (on average 4.418303283966517) internal successors, (54893), 12506 states have internal predecessors, (54893), 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) [2024-11-14 02:42:16,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12507 states to 12507 states and 54893 transitions. [2024-11-14 02:42:16,400 INFO L78 Accepts]: Start accepts. Automaton has 12507 states and 54893 transitions. Word has length 4 [2024-11-14 02:42:16,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:42:16,400 INFO L471 AbstractCegarLoop]: Abstraction has 12507 states and 54893 transitions. [2024-11-14 02:42:16,400 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.0) internal successors, (4), 4 states have internal predecessors, (4), 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) [2024-11-14 02:42:16,401 INFO L276 IsEmpty]: Start isEmpty. Operand 12507 states and 54893 transitions. [2024-11-14 02:42:16,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-14 02:42:16,401 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:42:16,401 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1] [2024-11-14 02:42:16,401 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-14 02:42:16,402 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-14 02:42:16,402 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:42:16,402 INFO L85 PathProgramCache]: Analyzing trace with hash 815971179, now seen corresponding path program 1 times [2024-11-14 02:42:16,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:42:16,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924869904] [2024-11-14 02:42:16,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:42:16,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:42:16,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:42:16,840 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:42:16,841 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:42:16,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924869904] [2024-11-14 02:42:16,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924869904] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 02:42:16,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [355386722] [2024-11-14 02:42:16,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:42:16,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:42:16,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 02:42:16,845 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 02:42:16,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-14 02:42:16,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:42:16,962 INFO L255 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-14 02:42:16,966 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:42:17,053 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2024-11-14 02:42:17,486 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:42:17,486 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 02:42:17,686 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:42:17,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [355386722] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 02:42:17,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1728450357] [2024-11-14 02:42:17,695 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Construction of path programs is not yet supported for concurrent programs at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:259) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 02:42:17,701 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 02:42:17,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2024-11-14 02:42:17,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836879182] [2024-11-14 02:42:17,701 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 02:42:17,701 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-14 02:42:17,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:42:17,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-14 02:42:17,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-11-14 02:42:17,702 INFO L87 Difference]: Start difference. First operand 12507 states and 54893 transitions. Second operand has 11 states, 10 states have (on average 1.5) internal successors, (15), 10 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) [2024-11-14 02:42:18,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:42:18,330 INFO L93 Difference]: Finished difference Result 12507 states and 54893 transitions. [2024-11-14 02:42:18,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 02:42:18,330 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.5) internal successors, (15), 10 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 5 [2024-11-14 02:42:18,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:42:18,550 INFO L225 Difference]: With dead ends: 12507 [2024-11-14 02:42:18,551 INFO L226 Difference]: Without dead ends: 12506 [2024-11-14 02:42:18,557 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2024-11-14 02:42:18,559 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 1 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 02:42:18,560 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 86 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-14 02:42:18,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12506 states. [2024-11-14 02:42:18,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12506 to 12504. [2024-11-14 02:42:18,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12504 states, 12422 states have (on average 4.41869264208662) internal successors, (54889), 12503 states have internal predecessors, (54889), 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) [2024-11-14 02:42:19,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12504 states to 12504 states and 54889 transitions. [2024-11-14 02:42:19,141 INFO L78 Accepts]: Start accepts. Automaton has 12504 states and 54889 transitions. Word has length 5 [2024-11-14 02:42:19,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:42:19,141 INFO L471 AbstractCegarLoop]: Abstraction has 12504 states and 54889 transitions. [2024-11-14 02:42:19,142 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.5) internal successors, (15), 10 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) [2024-11-14 02:42:19,142 INFO L276 IsEmpty]: Start isEmpty. Operand 12504 states and 54889 transitions. [2024-11-14 02:42:19,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-14 02:42:19,143 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:42:19,143 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2024-11-14 02:42:19,165 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-14 02:42:19,347 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:42:19,348 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-14 02:42:19,349 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:42:19,349 INFO L85 PathProgramCache]: Analyzing trace with hash -473734370, now seen corresponding path program 1 times [2024-11-14 02:42:19,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:42:19,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606642403] [2024-11-14 02:42:19,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:42:19,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:42:19,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:42:19,767 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:42:19,767 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:42:19,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606642403] [2024-11-14 02:42:19,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606642403] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 02:42:19,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [184800503] [2024-11-14 02:42:19,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:42:19,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:42:19,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 02:42:19,770 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 02:42:19,773 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-14 02:42:19,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:42:19,881 INFO L255 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-14 02:42:19,883 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:42:19,913 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2024-11-14 02:42:20,195 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:42:20,196 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 02:42:20,517 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:42:20,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [184800503] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 02:42:20,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [353822347] [2024-11-14 02:42:20,518 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Construction of path programs is not yet supported for concurrent programs at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:259) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 02:42:20,519 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 02:42:20,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 11 [2024-11-14 02:42:20,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768441033] [2024-11-14 02:42:20,519 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 02:42:20,519 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-14 02:42:20,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:42:20,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-14 02:42:20,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-11-14 02:42:20,521 INFO L87 Difference]: Start difference. First operand 12504 states and 54889 transitions. Second operand has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 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) [2024-11-14 02:42:21,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:42:21,265 INFO L93 Difference]: Finished difference Result 12510 states and 54899 transitions. [2024-11-14 02:42:21,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-14 02:42:21,266 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 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 6 [2024-11-14 02:42:21,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:42:21,360 INFO L225 Difference]: With dead ends: 12510 [2024-11-14 02:42:21,360 INFO L226 Difference]: Without dead ends: 12509 [2024-11-14 02:42:21,370 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2024-11-14 02:42:21,373 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 74 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-14 02:42:21,373 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 136 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 317 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-14 02:42:21,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12509 states. [2024-11-14 02:42:21,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12509 to 12501. [2024-11-14 02:42:21,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12501 states, 12420 states have (on average 4.419082125603865) internal successors, (54885), 12500 states have internal predecessors, (54885), 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) [2024-11-14 02:42:21,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12501 states to 12501 states and 54885 transitions. [2024-11-14 02:42:21,924 INFO L78 Accepts]: Start accepts. Automaton has 12501 states and 54885 transitions. Word has length 6 [2024-11-14 02:42:21,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:42:21,925 INFO L471 AbstractCegarLoop]: Abstraction has 12501 states and 54885 transitions. [2024-11-14 02:42:21,925 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 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) [2024-11-14 02:42:21,925 INFO L276 IsEmpty]: Start isEmpty. Operand 12501 states and 54885 transitions. [2024-11-14 02:42:21,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-14 02:42:21,925 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:42:21,925 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:42:21,945 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-14 02:42:22,126 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:42:22,126 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-14 02:42:22,126 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:42:22,126 INFO L85 PathProgramCache]: Analyzing trace with hash 118287611, now seen corresponding path program 1 times [2024-11-14 02:42:22,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:42:22,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761398456] [2024-11-14 02:42:22,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:42:22,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:42:22,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:42:22,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:42:22,274 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:42:22,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761398456] [2024-11-14 02:42:22,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761398456] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:42:22,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:42:22,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 02:42:22,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538776932] [2024-11-14 02:42:22,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:42:22,275 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 02:42:22,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:42:22,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 02:42:22,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 02:42:22,276 INFO L87 Difference]: Start difference. First operand 12501 states and 54885 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2024-11-14 02:42:22,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:42:22,761 INFO L93 Difference]: Finished difference Result 28876 states and 130085 transitions. [2024-11-14 02:42:22,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 02:42:22,762 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 8 [2024-11-14 02:42:22,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:42:22,913 INFO L225 Difference]: With dead ends: 28876 [2024-11-14 02:42:22,913 INFO L226 Difference]: Without dead ends: 17049 [2024-11-14 02:42:22,945 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-14 02:42:22,945 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 41 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 02:42:22,945 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 51 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 02:42:22,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17049 states. [2024-11-14 02:42:23,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17049 to 16793. [2024-11-14 02:42:23,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16793 states, 16688 states have (on average 4.33299376797699) internal successors, (72309), 16792 states have internal predecessors, (72309), 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) [2024-11-14 02:42:23,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16793 states to 16793 states and 72309 transitions. [2024-11-14 02:42:23,587 INFO L78 Accepts]: Start accepts. Automaton has 16793 states and 72309 transitions. Word has length 8 [2024-11-14 02:42:23,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:42:23,587 INFO L471 AbstractCegarLoop]: Abstraction has 16793 states and 72309 transitions. [2024-11-14 02:42:23,587 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2024-11-14 02:42:23,587 INFO L276 IsEmpty]: Start isEmpty. Operand 16793 states and 72309 transitions. [2024-11-14 02:42:23,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-14 02:42:23,588 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:42:23,588 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:42:23,588 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-14 02:42:23,588 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-14 02:42:23,588 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:42:23,589 INFO L85 PathProgramCache]: Analyzing trace with hash 601216113, now seen corresponding path program 1 times [2024-11-14 02:42:23,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:42:23,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127165607] [2024-11-14 02:42:23,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:42:23,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:42:23,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:42:23,777 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 02:42:23,778 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:42:23,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127165607] [2024-11-14 02:42:23,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127165607] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:42:23,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:42:23,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 02:42:23,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674707361] [2024-11-14 02:42:23,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:42:23,779 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 02:42:23,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:42:23,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 02:42:23,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 02:42:23,780 INFO L87 Difference]: Start difference. First operand 16793 states and 72309 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 02:42:24,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:42:24,018 INFO L93 Difference]: Finished difference Result 16793 states and 72309 transitions. [2024-11-14 02:42:24,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 02:42:24,018 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-11-14 02:42:24,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:42:24,139 INFO L225 Difference]: With dead ends: 16793 [2024-11-14 02:42:24,140 INFO L226 Difference]: Without dead ends: 14101 [2024-11-14 02:42:24,151 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-14 02:42:24,152 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 46 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 02:42:24,153 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 34 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 02:42:24,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14101 states. [2024-11-14 02:42:24,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14101 to 14101. [2024-11-14 02:42:24,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14101 states, 14041 states have (on average 4.3030410939391786) internal successors, (60419), 14100 states have internal predecessors, (60419), 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) [2024-11-14 02:42:24,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14101 states to 14101 states and 60419 transitions. [2024-11-14 02:42:24,616 INFO L78 Accepts]: Start accepts. Automaton has 14101 states and 60419 transitions. Word has length 10 [2024-11-14 02:42:24,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:42:24,616 INFO L471 AbstractCegarLoop]: Abstraction has 14101 states and 60419 transitions. [2024-11-14 02:42:24,616 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 02:42:24,617 INFO L276 IsEmpty]: Start isEmpty. Operand 14101 states and 60419 transitions. [2024-11-14 02:42:24,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-14 02:42:24,617 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:42:24,617 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:42:24,618 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-14 02:42:24,618 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-14 02:42:24,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:42:24,618 INFO L85 PathProgramCache]: Analyzing trace with hash 601216114, now seen corresponding path program 1 times [2024-11-14 02:42:24,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:42:24,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685742010] [2024-11-14 02:42:24,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:42:24,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:42:24,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:42:24,977 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:42:24,977 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:42:24,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685742010] [2024-11-14 02:42:24,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685742010] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 02:42:24,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1869851690] [2024-11-14 02:42:24,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:42:24,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:42:24,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 02:42:24,982 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 02:42:24,984 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-14 02:42:25,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:42:25,092 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-14 02:42:25,094 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:42:25,108 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-14 02:42:25,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 02:42:25,204 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 02:42:25,223 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-14 02:42:25,224 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-14 02:42:25,282 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:42:25,282 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 02:42:25,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1869851690] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:42:25,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 02:42:25,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 6 [2024-11-14 02:42:25,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925022500] [2024-11-14 02:42:25,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:42:25,283 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 02:42:25,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:42:25,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 02:42:25,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-14 02:42:25,284 INFO L87 Difference]: Start difference. First operand 14101 states and 60419 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 02:42:25,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:42:25,530 INFO L93 Difference]: Finished difference Result 14101 states and 60419 transitions. [2024-11-14 02:42:25,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 02:42:25,531 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-11-14 02:42:25,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:42:25,636 INFO L225 Difference]: With dead ends: 14101 [2024-11-14 02:42:25,636 INFO L226 Difference]: Without dead ends: 11733 [2024-11-14 02:42:25,647 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-14 02:42:25,647 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 43 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 02:42:25,648 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 34 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 02:42:25,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11733 states. [2024-11-14 02:42:26,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11733 to 11733. [2024-11-14 02:42:26,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11733 states, 11700 states have (on average 4.2708547008547) internal successors, (49969), 11732 states have internal predecessors, (49969), 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) [2024-11-14 02:42:26,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11733 states to 11733 states and 49969 transitions. [2024-11-14 02:42:26,248 INFO L78 Accepts]: Start accepts. Automaton has 11733 states and 49969 transitions. Word has length 10 [2024-11-14 02:42:26,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:42:26,249 INFO L471 AbstractCegarLoop]: Abstraction has 11733 states and 49969 transitions. [2024-11-14 02:42:26,249 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 02:42:26,249 INFO L276 IsEmpty]: Start isEmpty. Operand 11733 states and 49969 transitions. [2024-11-14 02:42:26,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-14 02:42:26,251 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:42:26,252 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:42:26,273 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-14 02:42:26,452 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-14 02:42:26,452 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-14 02:42:26,453 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:42:26,453 INFO L85 PathProgramCache]: Analyzing trace with hash 811373839, now seen corresponding path program 1 times [2024-11-14 02:42:26,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:42:26,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617215810] [2024-11-14 02:42:26,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:42:26,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:42:26,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:42:26,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:42:26,545 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:42:26,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617215810] [2024-11-14 02:42:26,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617215810] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:42:26,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:42:26,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 02:42:26,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713782835] [2024-11-14 02:42:26,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:42:26,546 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 02:42:26,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:42:26,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 02:42:26,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 02:42:26,547 INFO L87 Difference]: Start difference. First operand 11733 states and 49969 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 02:42:26,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:42:26,715 INFO L93 Difference]: Finished difference Result 11733 states and 49969 transitions. [2024-11-14 02:42:26,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 02:42:26,716 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-11-14 02:42:26,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:42:26,788 INFO L225 Difference]: With dead ends: 11733 [2024-11-14 02:42:26,789 INFO L226 Difference]: Without dead ends: 9294 [2024-11-14 02:42:26,797 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 02:42:26,798 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 40 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 02:42:26,798 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 34 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 02:42:26,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9294 states. [2024-11-14 02:42:27,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9294 to 9294. [2024-11-14 02:42:27,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9294 states, 9281 states have (on average 4.252451244477966) internal successors, (39467), 9293 states have internal predecessors, (39467), 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) [2024-11-14 02:42:27,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9294 states to 9294 states and 39467 transitions. [2024-11-14 02:42:27,240 INFO L78 Accepts]: Start accepts. Automaton has 9294 states and 39467 transitions. Word has length 10 [2024-11-14 02:42:27,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:42:27,242 INFO L471 AbstractCegarLoop]: Abstraction has 9294 states and 39467 transitions. [2024-11-14 02:42:27,242 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 02:42:27,242 INFO L276 IsEmpty]: Start isEmpty. Operand 9294 states and 39467 transitions. [2024-11-14 02:42:27,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-14 02:42:27,243 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:42:27,243 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:42:27,243 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-14 02:42:27,243 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-14 02:42:27,243 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:42:27,243 INFO L85 PathProgramCache]: Analyzing trace with hash 811373840, now seen corresponding path program 1 times [2024-11-14 02:42:27,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:42:27,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077623532] [2024-11-14 02:42:27,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:42:27,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:42:27,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:42:27,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:42:27,364 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:42:27,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077623532] [2024-11-14 02:42:27,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077623532] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:42:27,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:42:27,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 02:42:27,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104316711] [2024-11-14 02:42:27,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:42:27,365 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 02:42:27,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:42:27,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 02:42:27,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 02:42:27,365 INFO L87 Difference]: Start difference. First operand 9294 states and 39467 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 02:42:27,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:42:27,664 INFO L93 Difference]: Finished difference Result 22072 states and 95318 transitions. [2024-11-14 02:42:27,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 02:42:27,664 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-11-14 02:42:27,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:42:27,747 INFO L225 Difference]: With dead ends: 22072 [2024-11-14 02:42:27,747 INFO L226 Difference]: Without dead ends: 11877 [2024-11-14 02:42:27,771 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 02:42:27,772 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 30 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 02:42:27,772 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 51 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 02:42:27,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11877 states. [2024-11-14 02:42:28,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11877 to 11739. [2024-11-14 02:42:28,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11739 states, 11726 states have (on average 4.162971175166297) internal successors, (48815), 11738 states have internal predecessors, (48815), 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) [2024-11-14 02:42:28,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11739 states to 11739 states and 48815 transitions. [2024-11-14 02:42:28,373 INFO L78 Accepts]: Start accepts. Automaton has 11739 states and 48815 transitions. Word has length 10 [2024-11-14 02:42:28,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:42:28,373 INFO L471 AbstractCegarLoop]: Abstraction has 11739 states and 48815 transitions. [2024-11-14 02:42:28,373 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 02:42:28,373 INFO L276 IsEmpty]: Start isEmpty. Operand 11739 states and 48815 transitions. [2024-11-14 02:42:28,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-14 02:42:28,374 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:42:28,375 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:42:28,375 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-14 02:42:28,375 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-14 02:42:28,375 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:42:28,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1775964910, now seen corresponding path program 1 times [2024-11-14 02:42:28,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:42:28,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422015235] [2024-11-14 02:42:28,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:42:28,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:42:28,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:42:28,622 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:42:28,623 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:42:28,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422015235] [2024-11-14 02:42:28,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422015235] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 02:42:28,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [616342958] [2024-11-14 02:42:28,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:42:28,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:42:28,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 02:42:28,625 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 02:42:28,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-14 02:42:28,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:42:28,731 INFO L255 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-14 02:42:28,733 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:42:28,969 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:42:28,969 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 02:42:28,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [616342958] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:42:28,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 02:42:28,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2024-11-14 02:42:28,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783444262] [2024-11-14 02:42:28,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:42:28,970 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 02:42:28,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:42:28,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 02:42:28,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-14 02:42:28,970 INFO L87 Difference]: Start difference. First operand 11739 states and 48815 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 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) [2024-11-14 02:42:29,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:42:29,178 INFO L93 Difference]: Finished difference Result 11739 states and 48815 transitions. [2024-11-14 02:42:29,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 02:42:29,178 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 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 12 [2024-11-14 02:42:29,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:42:29,250 INFO L225 Difference]: With dead ends: 11739 [2024-11-14 02:42:29,250 INFO L226 Difference]: Without dead ends: 8658 [2024-11-14 02:42:29,259 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-14 02:42:29,260 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 35 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 02:42:29,260 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 34 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 02:42:29,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8658 states. [2024-11-14 02:42:29,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8658 to 8658. [2024-11-14 02:42:29,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8658 states, 8657 states have (on average 4.122790805128798) internal successors, (35691), 8657 states have internal predecessors, (35691), 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) [2024-11-14 02:42:29,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8658 states to 8658 states and 35691 transitions. [2024-11-14 02:42:29,626 INFO L78 Accepts]: Start accepts. Automaton has 8658 states and 35691 transitions. Word has length 12 [2024-11-14 02:42:29,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:42:29,626 INFO L471 AbstractCegarLoop]: Abstraction has 8658 states and 35691 transitions. [2024-11-14 02:42:29,627 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 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) [2024-11-14 02:42:29,627 INFO L276 IsEmpty]: Start isEmpty. Operand 8658 states and 35691 transitions. [2024-11-14 02:42:29,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-14 02:42:29,673 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:42:29,673 INFO L215 NwaCegarLoop]: trace 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, 1, 1, 1] [2024-11-14 02:42:29,694 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-14 02:42:29,877 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-14 02:42:29,878 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-14 02:42:29,878 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:42:29,879 INFO L85 PathProgramCache]: Analyzing trace with hash 978997892, now seen corresponding path program 1 times [2024-11-14 02:42:29,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:42:29,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205299157] [2024-11-14 02:42:29,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:42:29,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:42:29,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:42:29,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:42:29,964 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:42:29,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205299157] [2024-11-14 02:42:29,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205299157] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:42:29,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:42:29,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 02:42:29,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488994838] [2024-11-14 02:42:29,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:42:29,966 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 02:42:29,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:42:29,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 02:42:29,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 02:42:29,967 INFO L87 Difference]: Start difference. First operand 8658 states and 35691 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 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) [2024-11-14 02:42:30,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:42:30,266 INFO L93 Difference]: Finished difference Result 12743 states and 53062 transitions. [2024-11-14 02:42:30,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 02:42:30,266 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 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 29 [2024-11-14 02:42:30,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:42:30,334 INFO L225 Difference]: With dead ends: 12743 [2024-11-14 02:42:30,334 INFO L226 Difference]: Without dead ends: 11447 [2024-11-14 02:42:30,340 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 02:42:30,340 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 14 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 02:42:30,341 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 34 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 02:42:30,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11447 states. [2024-11-14 02:42:30,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11447 to 9876. [2024-11-14 02:42:30,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9876 states, 9875 states have (on average 4.193316455696203) internal successors, (41409), 9875 states have internal predecessors, (41409), 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) [2024-11-14 02:42:30,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9876 states to 9876 states and 41409 transitions. [2024-11-14 02:42:30,714 INFO L78 Accepts]: Start accepts. Automaton has 9876 states and 41409 transitions. Word has length 29 [2024-11-14 02:42:30,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:42:30,714 INFO L471 AbstractCegarLoop]: Abstraction has 9876 states and 41409 transitions. [2024-11-14 02:42:30,714 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 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) [2024-11-14 02:42:30,714 INFO L276 IsEmpty]: Start isEmpty. Operand 9876 states and 41409 transitions. [2024-11-14 02:42:30,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-14 02:42:30,743 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:42:30,743 INFO L215 NwaCegarLoop]: trace 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:42:30,743 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-14 02:42:30,744 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-14 02:42:30,744 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:42:30,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1046722804, now seen corresponding path program 1 times [2024-11-14 02:42:30,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:42:30,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018061712] [2024-11-14 02:42:30,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:42:30,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:42:30,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:42:30,862 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 02:42:30,862 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:42:30,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018061712] [2024-11-14 02:42:30,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018061712] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:42:30,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:42:30,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 02:42:30,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678390996] [2024-11-14 02:42:30,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:42:30,863 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 02:42:30,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:42:30,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 02:42:30,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 02:42:30,864 INFO L87 Difference]: Start difference. First operand 9876 states and 41409 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 2 states have internal predecessors, (34), 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) [2024-11-14 02:42:31,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:42:31,156 INFO L93 Difference]: Finished difference Result 16810 states and 70944 transitions. [2024-11-14 02:42:31,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 02:42:31,157 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 2 states have internal predecessors, (34), 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 34 [2024-11-14 02:42:31,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:42:31,248 INFO L225 Difference]: With dead ends: 16810 [2024-11-14 02:42:31,248 INFO L226 Difference]: Without dead ends: 12280 [2024-11-14 02:42:31,261 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 02:42:31,262 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 16 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 02:42:31,262 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 29 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 02:42:31,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12280 states. [2024-11-14 02:42:31,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12280 to 11246. [2024-11-14 02:42:31,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11246 states, 11245 states have (on average 4.206047132058693) internal successors, (47297), 11245 states have internal predecessors, (47297), 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) [2024-11-14 02:42:31,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11246 states to 11246 states and 47297 transitions. [2024-11-14 02:42:31,628 INFO L78 Accepts]: Start accepts. Automaton has 11246 states and 47297 transitions. Word has length 34 [2024-11-14 02:42:31,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:42:31,630 INFO L471 AbstractCegarLoop]: Abstraction has 11246 states and 47297 transitions. [2024-11-14 02:42:31,630 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 2 states have internal predecessors, (34), 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) [2024-11-14 02:42:31,630 INFO L276 IsEmpty]: Start isEmpty. Operand 11246 states and 47297 transitions. [2024-11-14 02:42:31,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-14 02:42:31,663 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:42:31,663 INFO L215 NwaCegarLoop]: trace 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:42:31,663 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-14 02:42:31,664 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-14 02:42:31,664 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:42:31,664 INFO L85 PathProgramCache]: Analyzing trace with hash -525539166, now seen corresponding path program 1 times [2024-11-14 02:42:31,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:42:31,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537443350] [2024-11-14 02:42:31,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:42:31,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:42:31,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:42:31,774 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 02:42:31,774 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:42:31,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537443350] [2024-11-14 02:42:31,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537443350] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:42:31,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:42:31,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 02:42:31,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736727538] [2024-11-14 02:42:31,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:42:31,775 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 02:42:31,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:42:31,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 02:42:31,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 02:42:31,775 INFO L87 Difference]: Start difference. First operand 11246 states and 47297 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 2 states have internal predecessors, (34), 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) [2024-11-14 02:42:32,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:42:32,102 INFO L93 Difference]: Finished difference Result 18459 states and 78396 transitions. [2024-11-14 02:42:32,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 02:42:32,102 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 2 states have internal predecessors, (34), 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 34 [2024-11-14 02:42:32,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:42:32,176 INFO L225 Difference]: With dead ends: 18459 [2024-11-14 02:42:32,176 INFO L226 Difference]: Without dead ends: 14048 [2024-11-14 02:42:32,186 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 02:42:32,187 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 15 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 02:42:32,187 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 29 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 02:42:32,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14048 states. [2024-11-14 02:42:32,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14048 to 13064. [2024-11-14 02:42:32,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13064 states, 13063 states have (on average 4.215264487483733) internal successors, (55064), 13063 states have internal predecessors, (55064), 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) [2024-11-14 02:42:32,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13064 states to 13064 states and 55064 transitions. [2024-11-14 02:42:32,553 INFO L78 Accepts]: Start accepts. Automaton has 13064 states and 55064 transitions. Word has length 34 [2024-11-14 02:42:32,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:42:32,553 INFO L471 AbstractCegarLoop]: Abstraction has 13064 states and 55064 transitions. [2024-11-14 02:42:32,553 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 2 states have internal predecessors, (34), 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) [2024-11-14 02:42:32,553 INFO L276 IsEmpty]: Start isEmpty. Operand 13064 states and 55064 transitions. [2024-11-14 02:42:32,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-14 02:42:32,583 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:42:32,583 INFO L215 NwaCegarLoop]: trace 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:42:32,583 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-14 02:42:32,584 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-14 02:42:32,584 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:42:32,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1437483443, now seen corresponding path program 1 times [2024-11-14 02:42:32,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:42:32,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622196245] [2024-11-14 02:42:32,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:42:32,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:42:32,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:42:33,238 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 02:42:33,238 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:42:33,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622196245] [2024-11-14 02:42:33,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622196245] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:42:33,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:42:33,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 02:42:33,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970552324] [2024-11-14 02:42:33,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:42:33,239 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 02:42:33,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:42:33,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 02:42:33,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-14 02:42:33,240 INFO L87 Difference]: Start difference. First operand 13064 states and 55064 transitions. Second operand has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 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) [2024-11-14 02:42:33,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:42:33,839 INFO L93 Difference]: Finished difference Result 15695 states and 65549 transitions. [2024-11-14 02:42:33,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-14 02:42:33,840 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 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 38 [2024-11-14 02:42:33,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:42:33,947 INFO L225 Difference]: With dead ends: 15695 [2024-11-14 02:42:33,947 INFO L226 Difference]: Without dead ends: 13758 [2024-11-14 02:42:33,957 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2024-11-14 02:42:33,958 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 131 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 02:42:33,959 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 82 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 316 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-14 02:42:33,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13758 states. [2024-11-14 02:42:34,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13758 to 12578. [2024-11-14 02:42:34,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12578 states, 12577 states have (on average 4.2274787310169355) internal successors, (53169), 12577 states have internal predecessors, (53169), 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) [2024-11-14 02:42:34,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12578 states to 12578 states and 53169 transitions. [2024-11-14 02:42:34,568 INFO L78 Accepts]: Start accepts. Automaton has 12578 states and 53169 transitions. Word has length 38 [2024-11-14 02:42:34,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:42:34,568 INFO L471 AbstractCegarLoop]: Abstraction has 12578 states and 53169 transitions. [2024-11-14 02:42:34,568 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 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) [2024-11-14 02:42:34,568 INFO L276 IsEmpty]: Start isEmpty. Operand 12578 states and 53169 transitions. [2024-11-14 02:42:34,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-14 02:42:34,594 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:42:34,594 INFO L215 NwaCegarLoop]: trace 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:42:34,594 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-14 02:42:34,594 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-14 02:42:34,595 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:42:34,595 INFO L85 PathProgramCache]: Analyzing trace with hash 353123137, now seen corresponding path program 2 times [2024-11-14 02:42:34,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:42:34,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908714673] [2024-11-14 02:42:34,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:42:34,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:42:34,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:42:35,056 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 02:42:35,056 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:42:35,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908714673] [2024-11-14 02:42:35,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908714673] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:42:35,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:42:35,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 02:42:35,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426643989] [2024-11-14 02:42:35,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:42:35,058 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 02:42:35,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:42:35,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 02:42:35,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-14 02:42:35,059 INFO L87 Difference]: Start difference. First operand 12578 states and 53169 transitions. Second operand has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 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) [2024-11-14 02:42:35,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:42:35,597 INFO L93 Difference]: Finished difference Result 14804 states and 60641 transitions. [2024-11-14 02:42:35,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-14 02:42:35,597 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 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 38 [2024-11-14 02:42:35,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:42:35,655 INFO L225 Difference]: With dead ends: 14804 [2024-11-14 02:42:35,655 INFO L226 Difference]: Without dead ends: 14255 [2024-11-14 02:42:35,660 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2024-11-14 02:42:35,660 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 183 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 02:42:35,660 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 69 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-14 02:42:35,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14255 states. [2024-11-14 02:42:36,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14255 to 12972. [2024-11-14 02:42:36,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12972 states, 12971 states have (on average 4.207848276925449) internal successors, (54580), 12971 states have internal predecessors, (54580), 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) [2024-11-14 02:42:36,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12972 states to 12972 states and 54580 transitions. [2024-11-14 02:42:36,140 INFO L78 Accepts]: Start accepts. Automaton has 12972 states and 54580 transitions. Word has length 38 [2024-11-14 02:42:36,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:42:36,141 INFO L471 AbstractCegarLoop]: Abstraction has 12972 states and 54580 transitions. [2024-11-14 02:42:36,141 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 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) [2024-11-14 02:42:36,141 INFO L276 IsEmpty]: Start isEmpty. Operand 12972 states and 54580 transitions. [2024-11-14 02:42:36,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-14 02:42:36,163 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:42:36,163 INFO L215 NwaCegarLoop]: trace 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:42:36,163 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-14 02:42:36,163 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-14 02:42:36,164 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:42:36,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1414091433, now seen corresponding path program 3 times [2024-11-14 02:42:36,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:42:36,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585155197] [2024-11-14 02:42:36,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:42:36,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:42:36,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:42:36,526 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 02:42:36,526 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:42:36,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585155197] [2024-11-14 02:42:36,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585155197] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:42:36,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:42:36,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 02:42:36,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961764413] [2024-11-14 02:42:36,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:42:36,527 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 02:42:36,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:42:36,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 02:42:36,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-14 02:42:36,528 INFO L87 Difference]: Start difference. First operand 12972 states and 54580 transitions. Second operand has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 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) [2024-11-14 02:42:36,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:42:36,989 INFO L93 Difference]: Finished difference Result 13715 states and 57045 transitions. [2024-11-14 02:42:36,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 02:42:36,990 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 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 38 [2024-11-14 02:42:36,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:42:37,069 INFO L225 Difference]: With dead ends: 13715 [2024-11-14 02:42:37,069 INFO L226 Difference]: Without dead ends: 13352 [2024-11-14 02:42:37,075 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2024-11-14 02:42:37,076 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 73 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 57 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 [2024-11-14 02:42:37,076 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 57 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-14 02:42:37,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13352 states. [2024-11-14 02:42:37,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13352 to 12746. [2024-11-14 02:42:37,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12746 states, 12745 states have (on average 4.2211847783444485) internal successors, (53799), 12745 states have internal predecessors, (53799), 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) [2024-11-14 02:42:37,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12746 states to 12746 states and 53799 transitions. [2024-11-14 02:42:37,463 INFO L78 Accepts]: Start accepts. Automaton has 12746 states and 53799 transitions. Word has length 38 [2024-11-14 02:42:37,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:42:37,463 INFO L471 AbstractCegarLoop]: Abstraction has 12746 states and 53799 transitions. [2024-11-14 02:42:37,463 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 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) [2024-11-14 02:42:37,463 INFO L276 IsEmpty]: Start isEmpty. Operand 12746 states and 53799 transitions. [2024-11-14 02:42:37,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-14 02:42:37,496 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:42:37,496 INFO L215 NwaCegarLoop]: trace 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:42:37,496 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-14 02:42:37,496 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-14 02:42:37,496 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:42:37,497 INFO L85 PathProgramCache]: Analyzing trace with hash -983221035, now seen corresponding path program 4 times [2024-11-14 02:42:37,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:42:37,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087841062] [2024-11-14 02:42:37,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:42:37,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:42:37,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:42:38,029 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 02:42:38,029 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:42:38,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087841062] [2024-11-14 02:42:38,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087841062] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:42:38,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:42:38,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 02:42:38,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017893692] [2024-11-14 02:42:38,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:42:38,030 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 02:42:38,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:42:38,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 02:42:38,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-14 02:42:38,031 INFO L87 Difference]: Start difference. First operand 12746 states and 53799 transitions. Second operand has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 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) [2024-11-14 02:42:38,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:42:38,573 INFO L93 Difference]: Finished difference Result 16102 states and 67456 transitions. [2024-11-14 02:42:38,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-14 02:42:38,574 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 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 38 [2024-11-14 02:42:38,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:42:38,692 INFO L225 Difference]: With dead ends: 16102 [2024-11-14 02:42:38,692 INFO L226 Difference]: Without dead ends: 15037 [2024-11-14 02:42:38,703 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-14 02:42:38,703 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 116 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 02:42:38,704 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 70 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-14 02:42:38,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15037 states. [2024-11-14 02:42:39,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15037 to 12534. [2024-11-14 02:42:39,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12534 states, 12533 states have (on average 4.232266815606798) internal successors, (53043), 12533 states have internal predecessors, (53043), 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) [2024-11-14 02:42:39,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12534 states to 12534 states and 53043 transitions. [2024-11-14 02:42:39,171 INFO L78 Accepts]: Start accepts. Automaton has 12534 states and 53043 transitions. Word has length 38 [2024-11-14 02:42:39,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:42:39,172 INFO L471 AbstractCegarLoop]: Abstraction has 12534 states and 53043 transitions. [2024-11-14 02:42:39,172 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 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) [2024-11-14 02:42:39,172 INFO L276 IsEmpty]: Start isEmpty. Operand 12534 states and 53043 transitions. [2024-11-14 02:42:39,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-14 02:42:39,204 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:42:39,204 INFO L215 NwaCegarLoop]: trace 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:42:39,204 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-14 02:42:39,204 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-14 02:42:39,204 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:42:39,204 INFO L85 PathProgramCache]: Analyzing trace with hash -769265997, now seen corresponding path program 5 times [2024-11-14 02:42:39,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:42:39,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411540122] [2024-11-14 02:42:39,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:42:39,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:42:39,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:42:39,633 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 02:42:39,633 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:42:39,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411540122] [2024-11-14 02:42:39,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411540122] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:42:39,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:42:39,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 02:42:39,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915103328] [2024-11-14 02:42:39,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:42:39,636 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 02:42:39,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:42:39,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 02:42:39,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-14 02:42:39,638 INFO L87 Difference]: Start difference. First operand 12534 states and 53043 transitions. Second operand has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 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) [2024-11-14 02:42:40,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:42:40,050 INFO L93 Difference]: Finished difference Result 13315 states and 55453 transitions. [2024-11-14 02:42:40,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 02:42:40,050 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 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 38 [2024-11-14 02:42:40,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:42:40,134 INFO L225 Difference]: With dead ends: 13315 [2024-11-14 02:42:40,134 INFO L226 Difference]: Without dead ends: 12682 [2024-11-14 02:42:40,142 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-11-14 02:42:40,142 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 66 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 02:42:40,143 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 73 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 02:42:40,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12682 states. [2024-11-14 02:42:40,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12682 to 12482. [2024-11-14 02:42:40,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12482 states, 12481 states have (on average 4.2252223379536895) internal successors, (52735), 12481 states have internal predecessors, (52735), 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) [2024-11-14 02:42:40,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12482 states to 12482 states and 52735 transitions. [2024-11-14 02:42:40,528 INFO L78 Accepts]: Start accepts. Automaton has 12482 states and 52735 transitions. Word has length 38 [2024-11-14 02:42:40,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:42:40,528 INFO L471 AbstractCegarLoop]: Abstraction has 12482 states and 52735 transitions. [2024-11-14 02:42:40,528 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 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) [2024-11-14 02:42:40,528 INFO L276 IsEmpty]: Start isEmpty. Operand 12482 states and 52735 transitions. [2024-11-14 02:42:40,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-14 02:42:40,560 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:42:40,560 INFO L215 NwaCegarLoop]: trace 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:42:40,561 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-14 02:42:40,561 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-14 02:42:40,561 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:42:40,561 INFO L85 PathProgramCache]: Analyzing trace with hash -52249043, now seen corresponding path program 6 times [2024-11-14 02:42:40,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:42:40,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074536078] [2024-11-14 02:42:40,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:42:40,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:42:40,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:42:41,021 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 02:42:41,022 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:42:41,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074536078] [2024-11-14 02:42:41,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074536078] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:42:41,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:42:41,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 02:42:41,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979438333] [2024-11-14 02:42:41,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:42:41,024 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 02:42:41,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:42:41,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 02:42:41,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-14 02:42:41,025 INFO L87 Difference]: Start difference. First operand 12482 states and 52735 transitions. Second operand has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 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) [2024-11-14 02:42:41,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:42:41,615 INFO L93 Difference]: Finished difference Result 13646 states and 56367 transitions. [2024-11-14 02:42:41,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-14 02:42:41,616 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 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 38 [2024-11-14 02:42:41,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:42:41,705 INFO L225 Difference]: With dead ends: 13646 [2024-11-14 02:42:41,705 INFO L226 Difference]: Without dead ends: 13097 [2024-11-14 02:42:41,710 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-11-14 02:42:41,711 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 115 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-14 02:42:41,711 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 77 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 304 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-14 02:42:41,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13097 states. [2024-11-14 02:42:41,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13097 to 12656. [2024-11-14 02:42:41,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12656 states, 12655 states have (on average 4.2045041485578825) internal successors, (53208), 12655 states have internal predecessors, (53208), 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) [2024-11-14 02:42:42,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12656 states to 12656 states and 53208 transitions. [2024-11-14 02:42:42,058 INFO L78 Accepts]: Start accepts. Automaton has 12656 states and 53208 transitions. Word has length 38 [2024-11-14 02:42:42,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:42:42,059 INFO L471 AbstractCegarLoop]: Abstraction has 12656 states and 53208 transitions. [2024-11-14 02:42:42,059 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 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) [2024-11-14 02:42:42,059 INFO L276 IsEmpty]: Start isEmpty. Operand 12656 states and 53208 transitions. [2024-11-14 02:42:42,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-14 02:42:42,092 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:42:42,092 INFO L215 NwaCegarLoop]: trace 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:42:42,093 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-14 02:42:42,093 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-14 02:42:42,093 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:42:42,093 INFO L85 PathProgramCache]: Analyzing trace with hash -1425059623, now seen corresponding path program 7 times [2024-11-14 02:42:42,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:42:42,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412092616] [2024-11-14 02:42:42,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:42:42,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:42:42,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:42:42,592 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 02:42:42,593 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:42:42,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412092616] [2024-11-14 02:42:42,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412092616] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:42:42,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:42:42,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 02:42:42,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11982014] [2024-11-14 02:42:42,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:42:42,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 02:42:42,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:42:42,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 02:42:42,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-14 02:42:42,595 INFO L87 Difference]: Start difference. First operand 12656 states and 53208 transitions. Second operand has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 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) [2024-11-14 02:42:43,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:42:43,007 INFO L93 Difference]: Finished difference Result 13097 states and 54541 transitions. [2024-11-14 02:42:43,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 02:42:43,008 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 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 38 [2024-11-14 02:42:43,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:42:43,104 INFO L225 Difference]: With dead ends: 13097 [2024-11-14 02:42:43,105 INFO L226 Difference]: Without dead ends: 12734 [2024-11-14 02:42:43,112 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2024-11-14 02:42:43,113 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 82 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 02:42:43,113 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 57 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 02:42:43,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12734 states. [2024-11-14 02:42:43,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12734 to 12430. [2024-11-14 02:42:43,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12430 states, 12429 states have (on average 4.218118915439698) internal successors, (52427), 12429 states have internal predecessors, (52427), 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) [2024-11-14 02:42:43,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12430 states to 12430 states and 52427 transitions. [2024-11-14 02:42:43,473 INFO L78 Accepts]: Start accepts. Automaton has 12430 states and 52427 transitions. Word has length 38 [2024-11-14 02:42:43,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:42:43,474 INFO L471 AbstractCegarLoop]: Abstraction has 12430 states and 52427 transitions. [2024-11-14 02:42:43,474 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 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) [2024-11-14 02:42:43,474 INFO L276 IsEmpty]: Start isEmpty. Operand 12430 states and 52427 transitions. [2024-11-14 02:42:43,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-14 02:42:43,503 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:42:43,503 INFO L215 NwaCegarLoop]: trace 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:42:43,503 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-14 02:42:43,504 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-14 02:42:43,504 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:42:43,507 INFO L85 PathProgramCache]: Analyzing trace with hash 472595205, now seen corresponding path program 8 times [2024-11-14 02:42:43,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:42:43,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967457664] [2024-11-14 02:42:43,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:42:43,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:42:43,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:42:43,888 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 02:42:43,888 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:42:43,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967457664] [2024-11-14 02:42:43,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967457664] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:42:43,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:42:43,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 02:42:43,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360954058] [2024-11-14 02:42:43,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:42:43,889 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 02:42:43,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:42:43,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 02:42:43,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-14 02:42:43,889 INFO L87 Difference]: Start difference. First operand 12430 states and 52427 transitions. Second operand has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 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) [2024-11-14 02:42:44,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:42:44,294 INFO L93 Difference]: Finished difference Result 13579 states and 56744 transitions. [2024-11-14 02:42:44,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-14 02:42:44,294 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 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 38 [2024-11-14 02:42:44,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:42:44,379 INFO L225 Difference]: With dead ends: 13579 [2024-11-14 02:42:44,379 INFO L226 Difference]: Without dead ends: 12343 [2024-11-14 02:42:44,387 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2024-11-14 02:42:44,389 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 82 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 02:42:44,389 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 76 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-14 02:42:44,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12343 states. [2024-11-14 02:42:44,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12343 to 10861. [2024-11-14 02:42:44,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10861 states, 10860 states have (on average 4.239871086556169) internal successors, (46045), 10860 states have internal predecessors, (46045), 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) [2024-11-14 02:42:44,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10861 states to 10861 states and 46045 transitions. [2024-11-14 02:42:44,726 INFO L78 Accepts]: Start accepts. Automaton has 10861 states and 46045 transitions. Word has length 38 [2024-11-14 02:42:44,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:42:44,726 INFO L471 AbstractCegarLoop]: Abstraction has 10861 states and 46045 transitions. [2024-11-14 02:42:44,727 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 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) [2024-11-14 02:42:44,727 INFO L276 IsEmpty]: Start isEmpty. Operand 10861 states and 46045 transitions. [2024-11-14 02:42:44,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-14 02:42:44,748 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:42:44,749 INFO L215 NwaCegarLoop]: trace 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:42:44,749 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-14 02:42:44,749 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-14 02:42:44,749 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:42:44,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1714441819, now seen corresponding path program 1 times [2024-11-14 02:42:44,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:42:44,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146589805] [2024-11-14 02:42:44,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:42:44,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:42:44,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:42:45,009 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 02:42:45,010 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:42:45,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146589805] [2024-11-14 02:42:45,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146589805] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 02:42:45,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1335229479] [2024-11-14 02:42:45,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:42:45,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:42:45,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 02:42:45,013 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 02:42:45,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-14 02:42:45,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:42:45,142 INFO L255 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-14 02:42:45,144 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:42:45,373 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 02:42:45,374 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 02:42:45,743 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 02:42:45,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1335229479] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 02:42:45,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1448321228] [2024-11-14 02:42:45,744 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 02:42:45,746 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 02:42:45,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 9] total 17 [2024-11-14 02:42:45,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324148112] [2024-11-14 02:42:45,747 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 02:42:45,747 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-14 02:42:45,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:42:45,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-14 02:42:45,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2024-11-14 02:42:45,748 INFO L87 Difference]: Start difference. First operand 10861 states and 46045 transitions. Second operand has 18 states, 18 states have (on average 5.166666666666667) internal successors, (93), 17 states have internal predecessors, (93), 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) [2024-11-14 02:42:49,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:42:49,790 INFO L93 Difference]: Finished difference Result 23120 states and 97535 transitions. [2024-11-14 02:42:49,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2024-11-14 02:42:49,791 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.166666666666667) internal successors, (93), 17 states have internal predecessors, (93), 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 38 [2024-11-14 02:42:49,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:42:49,930 INFO L225 Difference]: With dead ends: 23120 [2024-11-14 02:42:49,930 INFO L226 Difference]: Without dead ends: 19277 [2024-11-14 02:42:49,947 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1375 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=939, Invalid=3891, Unknown=0, NotChecked=0, Total=4830 [2024-11-14 02:42:49,948 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 867 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 2262 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 867 SdHoareTripleChecker+Valid, 512 SdHoareTripleChecker+Invalid, 2287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 2262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-14 02:42:49,948 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [867 Valid, 512 Invalid, 2287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 2262 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-14 02:42:49,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19277 states. [2024-11-14 02:42:50,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19277 to 12900. [2024-11-14 02:42:50,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12900 states, 12899 states have (on average 4.270331033413443) internal successors, (55083), 12899 states have internal predecessors, (55083), 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) [2024-11-14 02:42:50,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12900 states to 12900 states and 55083 transitions. [2024-11-14 02:42:50,346 INFO L78 Accepts]: Start accepts. Automaton has 12900 states and 55083 transitions. Word has length 38 [2024-11-14 02:42:50,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:42:50,347 INFO L471 AbstractCegarLoop]: Abstraction has 12900 states and 55083 transitions. [2024-11-14 02:42:50,347 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.166666666666667) internal successors, (93), 17 states have internal predecessors, (93), 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) [2024-11-14 02:42:50,347 INFO L276 IsEmpty]: Start isEmpty. Operand 12900 states and 55083 transitions. [2024-11-14 02:42:50,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-14 02:42:50,375 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:42:50,375 INFO L215 NwaCegarLoop]: trace 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:42:50,390 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-14 02:42:50,576 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-14 02:42:50,576 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-14 02:42:50,576 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:42:50,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1735086257, now seen corresponding path program 2 times [2024-11-14 02:42:50,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:42:50,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922922243] [2024-11-14 02:42:50,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:42:50,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:42:50,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:42:50,909 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 02:42:50,909 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:42:50,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922922243] [2024-11-14 02:42:50,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922922243] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:42:50,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:42:50,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 02:42:50,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144823187] [2024-11-14 02:42:50,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:42:50,910 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 02:42:50,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:42:50,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 02:42:50,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-14 02:42:50,910 INFO L87 Difference]: Start difference. First operand 12900 states and 55083 transitions. Second operand has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 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) [2024-11-14 02:42:51,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:42:51,324 INFO L93 Difference]: Finished difference Result 13484 states and 56733 transitions. [2024-11-14 02:42:51,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 02:42:51,325 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 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 38 [2024-11-14 02:42:51,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:42:51,383 INFO L225 Difference]: With dead ends: 13484 [2024-11-14 02:42:51,383 INFO L226 Difference]: Without dead ends: 12998 [2024-11-14 02:42:51,387 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-11-14 02:42:51,388 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 123 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 02:42:51,388 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 70 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-14 02:42:51,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12998 states. [2024-11-14 02:42:51,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12998 to 12848. [2024-11-14 02:42:51,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12848 states, 12847 states have (on average 4.261617498248619) internal successors, (54749), 12847 states have internal predecessors, (54749), 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) [2024-11-14 02:42:51,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12848 states to 12848 states and 54749 transitions. [2024-11-14 02:42:51,646 INFO L78 Accepts]: Start accepts. Automaton has 12848 states and 54749 transitions. Word has length 38 [2024-11-14 02:42:51,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:42:51,646 INFO L471 AbstractCegarLoop]: Abstraction has 12848 states and 54749 transitions. [2024-11-14 02:42:51,646 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 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) [2024-11-14 02:42:51,646 INFO L276 IsEmpty]: Start isEmpty. Operand 12848 states and 54749 transitions. [2024-11-14 02:42:51,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-14 02:42:51,668 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:42:51,668 INFO L215 NwaCegarLoop]: trace 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:42:51,668 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-14 02:42:51,668 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-14 02:42:51,668 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:42:51,669 INFO L85 PathProgramCache]: Analyzing trace with hash 1440954311, now seen corresponding path program 3 times [2024-11-14 02:42:51,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:42:51,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411428047] [2024-11-14 02:42:51,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:42:51,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:42:51,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:42:51,952 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 02:42:51,953 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:42:51,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411428047] [2024-11-14 02:42:51,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411428047] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 02:42:51,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [737165425] [2024-11-14 02:42:51,953 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-14 02:42:51,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:42:51,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 02:42:51,955 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 02:42:51,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-14 02:42:52,074 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-14 02:42:52,074 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 02:42:52,076 INFO L255 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-14 02:42:52,078 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:42:52,281 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 02:42:52,282 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 02:42:52,582 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 02:42:52,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [737165425] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 02:42:52,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1650276013] [2024-11-14 02:42:52,582 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1715) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:168) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-14 02:42:52,582 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 02:42:52,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 9] total 17 [2024-11-14 02:42:52,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856726411] [2024-11-14 02:42:52,583 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 02:42:52,583 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-14 02:42:52,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:42:52,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-14 02:42:52,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2024-11-14 02:42:52,584 INFO L87 Difference]: Start difference. First operand 12848 states and 54749 transitions. Second operand has 18 states, 18 states have (on average 5.166666666666667) internal successors, (93), 17 states have internal predecessors, (93), 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) [2024-11-14 02:43:01,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:43:01,750 INFO L93 Difference]: Finished difference Result 33564 states and 135051 transitions. [2024-11-14 02:43:01,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 152 states. [2024-11-14 02:43:01,751 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.166666666666667) internal successors, (93), 17 states have internal predecessors, (93), 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 38 [2024-11-14 02:43:01,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:43:02,026 INFO L225 Difference]: With dead ends: 33564 [2024-11-14 02:43:02,027 INFO L226 Difference]: Without dead ends: 31291 [2024-11-14 02:43:02,036 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9895 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=3637, Invalid=21169, Unknown=0, NotChecked=0, Total=24806 [2024-11-14 02:43:02,036 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 1270 mSDsluCounter, 589 mSDsCounter, 0 mSdLazyCounter, 3187 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1270 SdHoareTripleChecker+Valid, 635 SdHoareTripleChecker+Invalid, 3242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 3187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-14 02:43:02,036 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1270 Valid, 635 Invalid, 3242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 3187 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-14 02:43:02,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31291 states. [2024-11-14 02:43:02,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31291 to 15833. [2024-11-14 02:43:02,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15833 states, 15832 states have (on average 4.263516927741284) internal successors, (67500), 15832 states have internal predecessors, (67500), 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) [2024-11-14 02:43:02,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15833 states to 15833 states and 67500 transitions. [2024-11-14 02:43:02,558 INFO L78 Accepts]: Start accepts. Automaton has 15833 states and 67500 transitions. Word has length 38 [2024-11-14 02:43:02,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:43:02,559 INFO L471 AbstractCegarLoop]: Abstraction has 15833 states and 67500 transitions. [2024-11-14 02:43:02,559 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.166666666666667) internal successors, (93), 17 states have internal predecessors, (93), 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) [2024-11-14 02:43:02,559 INFO L276 IsEmpty]: Start isEmpty. Operand 15833 states and 67500 transitions. [2024-11-14 02:43:02,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-14 02:43:02,592 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:43:02,592 INFO L215 NwaCegarLoop]: trace 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:43:02,606 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-14 02:43:02,792 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:43:02,792 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-14 02:43:02,793 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:43:02,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1212791459, now seen corresponding path program 4 times [2024-11-14 02:43:02,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:43:02,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851498232] [2024-11-14 02:43:02,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:43:02,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:43:02,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:43:03,070 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 02:43:03,070 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:43:03,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851498232] [2024-11-14 02:43:03,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851498232] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:43:03,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:43:03,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 02:43:03,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691281443] [2024-11-14 02:43:03,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:43:03,070 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 02:43:03,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:43:03,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 02:43:03,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-14 02:43:03,071 INFO L87 Difference]: Start difference. First operand 15833 states and 67500 transitions. Second operand has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 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) [2024-11-14 02:43:03,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:43:03,677 INFO L93 Difference]: Finished difference Result 18409 states and 76946 transitions. [2024-11-14 02:43:03,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-14 02:43:03,677 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 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 38 [2024-11-14 02:43:03,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:43:03,790 INFO L225 Difference]: With dead ends: 18409 [2024-11-14 02:43:03,790 INFO L226 Difference]: Without dead ends: 16844 [2024-11-14 02:43:03,801 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2024-11-14 02:43:03,802 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 188 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-14 02:43:03,802 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 68 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-14 02:43:03,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16844 states. [2024-11-14 02:43:04,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16844 to 14969. [2024-11-14 02:43:04,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14969 states, 14968 states have (on average 4.290219134152859) internal successors, (64216), 14968 states have internal predecessors, (64216), 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) [2024-11-14 02:43:04,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14969 states to 14969 states and 64216 transitions. [2024-11-14 02:43:04,329 INFO L78 Accepts]: Start accepts. Automaton has 14969 states and 64216 transitions. Word has length 38 [2024-11-14 02:43:04,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:43:04,329 INFO L471 AbstractCegarLoop]: Abstraction has 14969 states and 64216 transitions. [2024-11-14 02:43:04,329 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 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) [2024-11-14 02:43:04,329 INFO L276 IsEmpty]: Start isEmpty. Operand 14969 states and 64216 transitions. [2024-11-14 02:43:04,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-14 02:43:04,359 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:43:04,359 INFO L215 NwaCegarLoop]: trace 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:43:04,359 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-14 02:43:04,360 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-14 02:43:04,360 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:43:04,360 INFO L85 PathProgramCache]: Analyzing trace with hash -958167309, now seen corresponding path program 5 times [2024-11-14 02:43:04,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:43:04,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408105071] [2024-11-14 02:43:04,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:43:04,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:43:04,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:43:04,915 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 02:43:04,915 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:43:04,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408105071] [2024-11-14 02:43:04,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408105071] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 02:43:04,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1675187767] [2024-11-14 02:43:04,916 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 02:43:04,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:43:04,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 02:43:04,918 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 02:43:04,921 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-14 02:43:05,032 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-14 02:43:05,033 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 02:43:05,034 INFO L255 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-14 02:43:05,036 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:43:05,204 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 02:43:05,204 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 02:43:05,404 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 02:43:05,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1675187767] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-14 02:43:05,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-14 02:43:05,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6, 5] total 16 [2024-11-14 02:43:05,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955671667] [2024-11-14 02:43:05,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:43:05,404 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-14 02:43:05,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:43:05,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-14 02:43:05,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2024-11-14 02:43:05,405 INFO L87 Difference]: Start difference. First operand 14969 states and 64216 transitions. Second operand has 8 states, 8 states have (on average 4.75) internal successors, (38), 7 states have internal predecessors, (38), 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) [2024-11-14 02:43:06,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:43:06,187 INFO L93 Difference]: Finished difference Result 19159 states and 79109 transitions. [2024-11-14 02:43:06,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-14 02:43:06,188 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 7 states have internal predecessors, (38), 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 38 [2024-11-14 02:43:06,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:43:06,296 INFO L225 Difference]: With dead ends: 19159 [2024-11-14 02:43:06,296 INFO L226 Difference]: Without dead ends: 18583 [2024-11-14 02:43:06,307 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=204, Invalid=852, Unknown=0, NotChecked=0, Total=1056 [2024-11-14 02:43:06,308 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 518 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 518 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-14 02:43:06,308 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [518 Valid, 99 Invalid, 390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 372 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-14 02:43:06,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18583 states. [2024-11-14 02:43:06,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18583 to 15289. [2024-11-14 02:43:06,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15289 states, 15288 states have (on average 4.297095761381476) internal successors, (65694), 15288 states have internal predecessors, (65694), 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) [2024-11-14 02:43:06,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15289 states to 15289 states and 65694 transitions. [2024-11-14 02:43:07,018 INFO L78 Accepts]: Start accepts. Automaton has 15289 states and 65694 transitions. Word has length 38 [2024-11-14 02:43:07,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:43:07,019 INFO L471 AbstractCegarLoop]: Abstraction has 15289 states and 65694 transitions. [2024-11-14 02:43:07,019 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 7 states have internal predecessors, (38), 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) [2024-11-14 02:43:07,019 INFO L276 IsEmpty]: Start isEmpty. Operand 15289 states and 65694 transitions. [2024-11-14 02:43:07,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-14 02:43:07,058 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:43:07,059 INFO L215 NwaCegarLoop]: trace 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:43:07,071 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-14 02:43:07,259 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:43:07,259 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-14 02:43:07,260 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:43:07,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1473764475, now seen corresponding path program 6 times [2024-11-14 02:43:07,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:43:07,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742904967] [2024-11-14 02:43:07,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:43:07,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:43:07,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:43:07,632 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 02:43:07,632 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:43:07,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742904967] [2024-11-14 02:43:07,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742904967] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:43:07,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:43:07,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-14 02:43:07,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043371591] [2024-11-14 02:43:07,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:43:07,633 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-14 02:43:07,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:43:07,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-14 02:43:07,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-14 02:43:07,634 INFO L87 Difference]: Start difference. First operand 15289 states and 65694 transitions. Second operand has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 6 states have internal predecessors, (38), 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) [2024-11-14 02:43:08,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:43:08,126 INFO L93 Difference]: Finished difference Result 20647 states and 87364 transitions. [2024-11-14 02:43:08,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-14 02:43:08,126 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 6 states have internal predecessors, (38), 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 38 [2024-11-14 02:43:08,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:43:08,352 INFO L225 Difference]: With dead ends: 20647 [2024-11-14 02:43:08,352 INFO L226 Difference]: Without dead ends: 20203 [2024-11-14 02:43:08,356 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2024-11-14 02:43:08,356 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 216 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 02:43:08,357 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 76 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-14 02:43:08,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20203 states. [2024-11-14 02:43:08,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20203 to 15183. [2024-11-14 02:43:08,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15183 states, 15182 states have (on average 4.301804768805164) internal successors, (65310), 15182 states have internal predecessors, (65310), 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) [2024-11-14 02:43:08,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15183 states to 15183 states and 65310 transitions. [2024-11-14 02:43:08,733 INFO L78 Accepts]: Start accepts. Automaton has 15183 states and 65310 transitions. Word has length 38 [2024-11-14 02:43:08,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:43:08,734 INFO L471 AbstractCegarLoop]: Abstraction has 15183 states and 65310 transitions. [2024-11-14 02:43:08,734 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 6 states have internal predecessors, (38), 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) [2024-11-14 02:43:08,734 INFO L276 IsEmpty]: Start isEmpty. Operand 15183 states and 65310 transitions. [2024-11-14 02:43:08,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-14 02:43:08,764 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:43:08,764 INFO L215 NwaCegarLoop]: trace 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:43:08,764 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-14 02:43:08,764 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-14 02:43:08,765 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:43:08,765 INFO L85 PathProgramCache]: Analyzing trace with hash 803809953, now seen corresponding path program 7 times [2024-11-14 02:43:08,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:43:08,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563261933] [2024-11-14 02:43:08,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:43:08,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:43:08,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:43:09,050 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 02:43:09,050 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:43:09,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563261933] [2024-11-14 02:43:09,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563261933] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:43:09,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:43:09,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-14 02:43:09,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387454259] [2024-11-14 02:43:09,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:43:09,050 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-14 02:43:09,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:43:09,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-14 02:43:09,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-14 02:43:09,051 INFO L87 Difference]: Start difference. First operand 15183 states and 65310 transitions. Second operand has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 6 states have internal predecessors, (38), 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) [2024-11-14 02:43:09,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:43:09,667 INFO L93 Difference]: Finished difference Result 21827 states and 92718 transitions. [2024-11-14 02:43:09,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-14 02:43:09,667 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 6 states have internal predecessors, (38), 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 38 [2024-11-14 02:43:09,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:43:09,754 INFO L225 Difference]: With dead ends: 21827 [2024-11-14 02:43:09,754 INFO L226 Difference]: Without dead ends: 19767 [2024-11-14 02:43:09,764 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-11-14 02:43:09,765 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 121 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 365 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 02:43:09,765 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 97 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 365 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-14 02:43:09,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19767 states. [2024-11-14 02:43:10,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19767 to 14670. [2024-11-14 02:43:10,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14670 states, 14669 states have (on average 4.257549935237575) internal successors, (62454), 14669 states have internal predecessors, (62454), 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) [2024-11-14 02:43:10,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14670 states to 14670 states and 62454 transitions. [2024-11-14 02:43:10,138 INFO L78 Accepts]: Start accepts. Automaton has 14670 states and 62454 transitions. Word has length 38 [2024-11-14 02:43:10,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:43:10,138 INFO L471 AbstractCegarLoop]: Abstraction has 14670 states and 62454 transitions. [2024-11-14 02:43:10,138 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 6 states have internal predecessors, (38), 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) [2024-11-14 02:43:10,138 INFO L276 IsEmpty]: Start isEmpty. Operand 14670 states and 62454 transitions. [2024-11-14 02:43:10,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-14 02:43:10,167 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:43:10,168 INFO L215 NwaCegarLoop]: trace 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:43:10,168 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-14 02:43:10,168 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-14 02:43:10,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:43:10,168 INFO L85 PathProgramCache]: Analyzing trace with hash 899346489, now seen corresponding path program 8 times [2024-11-14 02:43:10,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:43:10,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908695982] [2024-11-14 02:43:10,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:43:10,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:43:10,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:43:10,585 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 02:43:10,586 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:43:10,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908695982] [2024-11-14 02:43:10,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908695982] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:43:10,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:43:10,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-14 02:43:10,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067679140] [2024-11-14 02:43:10,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:43:10,587 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-14 02:43:10,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:43:10,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-14 02:43:10,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-14 02:43:10,587 INFO L87 Difference]: Start difference. First operand 14670 states and 62454 transitions. Second operand has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 6 states have internal predecessors, (38), 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) [2024-11-14 02:43:11,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:43:11,068 INFO L93 Difference]: Finished difference Result 19816 states and 82470 transitions. [2024-11-14 02:43:11,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-14 02:43:11,069 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 6 states have internal predecessors, (38), 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 38 [2024-11-14 02:43:11,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:43:11,157 INFO L225 Difference]: With dead ends: 19816 [2024-11-14 02:43:11,157 INFO L226 Difference]: Without dead ends: 18053 [2024-11-14 02:43:11,165 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2024-11-14 02:43:11,165 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 154 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 02:43:11,166 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 86 Invalid, 393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 384 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-14 02:43:11,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18053 states. [2024-11-14 02:43:11,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18053 to 14952. [2024-11-14 02:43:11,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14952 states, 14951 states have (on average 4.252090161193231) internal successors, (63573), 14951 states have internal predecessors, (63573), 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) [2024-11-14 02:43:11,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14952 states to 14952 states and 63573 transitions. [2024-11-14 02:43:11,711 INFO L78 Accepts]: Start accepts. Automaton has 14952 states and 63573 transitions. Word has length 38 [2024-11-14 02:43:11,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:43:11,711 INFO L471 AbstractCegarLoop]: Abstraction has 14952 states and 63573 transitions. [2024-11-14 02:43:11,711 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 6 states have internal predecessors, (38), 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) [2024-11-14 02:43:11,711 INFO L276 IsEmpty]: Start isEmpty. Operand 14952 states and 63573 transitions. [2024-11-14 02:43:11,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-14 02:43:11,748 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:43:11,748 INFO L215 NwaCegarLoop]: trace 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:43:11,748 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-14 02:43:11,748 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-14 02:43:11,749 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:43:11,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1535489789, now seen corresponding path program 9 times [2024-11-14 02:43:11,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:43:11,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420138860] [2024-11-14 02:43:11,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:43:11,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:43:11,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:43:12,041 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 02:43:12,041 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:43:12,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420138860] [2024-11-14 02:43:12,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420138860] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:43:12,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:43:12,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 02:43:12,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453493326] [2024-11-14 02:43:12,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:43:12,042 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 02:43:12,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:43:12,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 02:43:12,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-14 02:43:12,043 INFO L87 Difference]: Start difference. First operand 14952 states and 63573 transitions. Second operand has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 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) [2024-11-14 02:43:12,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:43:12,470 INFO L93 Difference]: Finished difference Result 15716 states and 66052 transitions. [2024-11-14 02:43:12,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-14 02:43:12,470 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 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 38 [2024-11-14 02:43:12,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:43:12,562 INFO L225 Difference]: With dead ends: 15716 [2024-11-14 02:43:12,563 INFO L226 Difference]: Without dead ends: 13821 [2024-11-14 02:43:12,569 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-14 02:43:12,569 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 82 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 02:43:12,570 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 70 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 02:43:12,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13821 states. [2024-11-14 02:43:12,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13821 to 13821. [2024-11-14 02:43:12,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13821 states, 13820 states have (on average 4.3178726483357455) internal successors, (59673), 13820 states have internal predecessors, (59673), 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) [2024-11-14 02:43:13,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13821 states to 13821 states and 59673 transitions. [2024-11-14 02:43:13,196 INFO L78 Accepts]: Start accepts. Automaton has 13821 states and 59673 transitions. Word has length 38 [2024-11-14 02:43:13,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:43:13,197 INFO L471 AbstractCegarLoop]: Abstraction has 13821 states and 59673 transitions. [2024-11-14 02:43:13,197 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 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) [2024-11-14 02:43:13,197 INFO L276 IsEmpty]: Start isEmpty. Operand 13821 states and 59673 transitions. [2024-11-14 02:43:13,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-14 02:43:13,224 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:43:13,224 INFO L215 NwaCegarLoop]: trace 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:43:13,224 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-11-14 02:43:13,224 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-14 02:43:13,225 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:43:13,225 INFO L85 PathProgramCache]: Analyzing trace with hash 677399700, now seen corresponding path program 1 times [2024-11-14 02:43:13,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:43:13,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383696275] [2024-11-14 02:43:13,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:43:13,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:43:13,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:43:13,366 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 02:43:13,366 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 02:43:13,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383696275] [2024-11-14 02:43:13,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383696275] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 02:43:13,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [260559773] [2024-11-14 02:43:13,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:43:13,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:43:13,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 02:43:13,369 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 02:43:13,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-14 02:43:13,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:43:13,498 INFO L255 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-14 02:43:13,500 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:43:13,659 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 02:43:13,659 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 02:43:13,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [260559773] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:43:13,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 02:43:13,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2024-11-14 02:43:13,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013859136] [2024-11-14 02:43:13,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:43:13,660 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-14 02:43:13,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 02:43:13,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-14 02:43:13,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-14 02:43:13,661 INFO L87 Difference]: Start difference. First operand 13821 states and 59673 transitions. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 7 states have internal predecessors, (44), 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) [2024-11-14 02:43:14,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:43:14,423 INFO L93 Difference]: Finished difference Result 23651 states and 103822 transitions. [2024-11-14 02:43:14,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-14 02:43:14,423 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 7 states have internal predecessors, (44), 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 44 [2024-11-14 02:43:14,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:43:14,547 INFO L225 Difference]: With dead ends: 23651 [2024-11-14 02:43:14,547 INFO L226 Difference]: Without dead ends: 22833 [2024-11-14 02:43:14,557 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=101, Invalid=241, Unknown=0, NotChecked=0, Total=342 [2024-11-14 02:43:14,557 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 190 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 694 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-14 02:43:14,558 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 227 Invalid, 709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 694 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-14 02:43:14,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22833 states. [2024-11-14 02:43:15,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22833 to 14375. [2024-11-14 02:43:15,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14375 states, 14374 states have (on average 4.3259357172672885) internal successors, (62181), 14374 states have internal predecessors, (62181), 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) [2024-11-14 02:43:15,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14375 states to 14375 states and 62181 transitions. [2024-11-14 02:43:15,266 INFO L78 Accepts]: Start accepts. Automaton has 14375 states and 62181 transitions. Word has length 44 [2024-11-14 02:43:15,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:43:15,266 INFO L471 AbstractCegarLoop]: Abstraction has 14375 states and 62181 transitions. [2024-11-14 02:43:15,266 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 7 states have internal predecessors, (44), 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) [2024-11-14 02:43:15,266 INFO L276 IsEmpty]: Start isEmpty. Operand 14375 states and 62181 transitions. [2024-11-14 02:43:15,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-14 02:43:15,298 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:43:15,298 INFO L215 NwaCegarLoop]: trace 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:43:15,314 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-14 02:43:15,498 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:43:15,499 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-14 02:43:15,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:43:15,499 INFO L85 PathProgramCache]: Analyzing trace with hash 1139710836, now seen corresponding path program 1 times [2024-11-14 02:43:15,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 02:43:15,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755589061] [2024-11-14 02:43:15,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:43:15,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 02:43:15,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-14 02:43:15,528 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-14 02:43:15,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-14 02:43:15,599 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2024-11-14 02:43:15,599 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-14 02:43:15,600 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (25 of 26 remaining) [2024-11-14 02:43:15,602 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 26 remaining) [2024-11-14 02:43:15,603 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 26 remaining) [2024-11-14 02:43:15,603 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 26 remaining) [2024-11-14 02:43:15,603 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 26 remaining) [2024-11-14 02:43:15,603 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 26 remaining) [2024-11-14 02:43:15,603 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 26 remaining) [2024-11-14 02:43:15,604 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 26 remaining) [2024-11-14 02:43:15,604 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 26 remaining) [2024-11-14 02:43:15,604 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 26 remaining) [2024-11-14 02:43:15,604 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 26 remaining) [2024-11-14 02:43:15,604 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK (14 of 26 remaining) [2024-11-14 02:43:15,604 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (13 of 26 remaining) [2024-11-14 02:43:15,604 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 26 remaining) [2024-11-14 02:43:15,604 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 26 remaining) [2024-11-14 02:43:15,605 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 26 remaining) [2024-11-14 02:43:15,605 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread4Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 26 remaining) [2024-11-14 02:43:15,605 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread4Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 26 remaining) [2024-11-14 02:43:15,605 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 26 remaining) [2024-11-14 02:43:15,605 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 26 remaining) [2024-11-14 02:43:15,605 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 26 remaining) [2024-11-14 02:43:15,605 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 26 remaining) [2024-11-14 02:43:15,605 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 26 remaining) [2024-11-14 02:43:15,605 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 26 remaining) [2024-11-14 02:43:15,606 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread4Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 26 remaining) [2024-11-14 02:43:15,606 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread4Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 26 remaining) [2024-11-14 02:43:15,606 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-11-14 02:43:15,610 INFO L407 BasicCegarLoop]: Path program histogram: [9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:43:15,743 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-14 02:43:15,743 INFO L173 ceAbstractionStarter]: Computing trace abstraction results [2024-11-14 02:43:15,746 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.11 02:43:15 BasicIcfg [2024-11-14 02:43:15,746 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-14 02:43:15,747 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-14 02:43:15,747 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-14 02:43:15,748 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-14 02:43:15,748 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 02:42:08" (3/4) ... [2024-11-14 02:43:15,750 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-14 02:43:15,751 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-14 02:43:15,752 INFO L158 Benchmark]: Toolchain (without parser) took 69506.75ms. Allocated memory was 117.4MB in the beginning and 9.2GB in the end (delta: 9.1GB). Free memory was 91.9MB in the beginning and 7.4GB in the end (delta: -7.3GB). Peak memory consumption was 1.8GB. Max. memory is 16.1GB. [2024-11-14 02:43:15,752 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 117.4MB. Free memory is still 73.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 02:43:15,753 INFO L158 Benchmark]: CACSL2BoogieTranslator took 338.25ms. Allocated memory is still 117.4MB. Free memory was 91.9MB in the beginning and 79.1MB in the end (delta: 12.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-14 02:43:15,753 INFO L158 Benchmark]: Boogie Procedure Inliner took 70.17ms. Allocated memory is still 117.4MB. Free memory was 79.1MB in the beginning and 76.8MB in the end (delta: 2.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 02:43:15,753 INFO L158 Benchmark]: Boogie Preprocessor took 69.11ms. Allocated memory is still 117.4MB. Free memory was 76.8MB in the beginning and 74.9MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 02:43:15,753 INFO L158 Benchmark]: RCFGBuilder took 1486.75ms. Allocated memory is still 117.4MB. Free memory was 74.9MB in the beginning and 40.0MB in the end (delta: 34.9MB). Peak memory consumption was 47.0MB. Max. memory is 16.1GB. [2024-11-14 02:43:15,754 INFO L158 Benchmark]: TraceAbstraction took 67529.81ms. Allocated memory was 117.4MB in the beginning and 9.2GB in the end (delta: 9.1GB). Free memory was 39.4MB in the beginning and 7.4GB in the end (delta: -7.4GB). Peak memory consumption was 1.7GB. Max. memory is 16.1GB. [2024-11-14 02:43:15,754 INFO L158 Benchmark]: Witness Printer took 4.23ms. Allocated memory is still 9.2GB. Free memory was 7.4GB in the beginning and 7.4GB in the end (delta: 38.9kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-14 02:43:15,755 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 117.4MB. Free memory is still 73.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 338.25ms. Allocated memory is still 117.4MB. Free memory was 91.9MB in the beginning and 79.1MB in the end (delta: 12.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 70.17ms. Allocated memory is still 117.4MB. Free memory was 79.1MB in the beginning and 76.8MB in the end (delta: 2.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 69.11ms. Allocated memory is still 117.4MB. Free memory was 76.8MB in the beginning and 74.9MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 1486.75ms. Allocated memory is still 117.4MB. Free memory was 74.9MB in the beginning and 40.0MB in the end (delta: 34.9MB). Peak memory consumption was 47.0MB. Max. memory is 16.1GB. * TraceAbstraction took 67529.81ms. Allocated memory was 117.4MB in the beginning and 9.2GB in the end (delta: 9.1GB). Free memory was 39.4MB in the beginning and 7.4GB in the end (delta: -7.4GB). Peak memory consumption was 1.7GB. Max. memory is 16.1GB. * Witness Printer took 4.23ms. Allocated memory is still 9.2GB. Free memory was 7.4GB in the beginning and 7.4GB in the end (delta: 38.9kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * 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: 21]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 21. Possible FailurePath: [L41] 0 int *q1, *q2; [L42] 0 int q1_front, q1_back, q2_front, q2_back, i, j, n1, n2, N, C, total; [L126] 0 pthread_t t1, t2, t3, t4; [L128] 0 C = __VERIFIER_nondet_int() [L129] 0 N = __VERIFIER_nondet_int() [L130] 0 n1 = __VERIFIER_nondet_int() [L131] 0 n2 = __VERIFIER_nondet_int() [L132] 0 q1_front = __VERIFIER_nondet_int() [L133] 0 q1_back = q1_front [L134] 0 q2_front = __VERIFIER_nondet_int() [L135] 0 q2_back = q2_front [L136] CALL, EXPR 0 create_fresh_int_array(n1) [L158] CALL 0 assume_abort_if_not(size >= 0) [L38] COND FALSE 0 !(!cond) [L158] RET 0 assume_abort_if_not(size >= 0) [L159] CALL 0 assume_abort_if_not(size <= (((size_t) 4294967295) / sizeof(int))) [L38] COND FALSE 0 !(!cond) [L159] RET 0 assume_abort_if_not(size <= (((size_t) 4294967295) / sizeof(int))) [L161] 0 int* arr = (int*)malloc(sizeof(int) * (size_t)size); [L162] 0 int i = 0; VAL [C=5, N=1, \old(size)=1, arr={-3:0}, i=0, i=0, j=0, n1=1, n2=1, q1={0:0}, q1_back=0, q1_front=0, q2={0:0}, q2_back=0, q2_front=0, size=1, total=0] [L162] COND TRUE 0 i < size [L163] 0 arr[i] = __VERIFIER_nondet_int() [L162] 0 i++ VAL [C=5, N=1, \old(size)=1, arr={-3:0}, i=0, i=1, j=0, n1=1, n2=1, q1={0:0}, q1_back=0, q1_front=0, q2={0:0}, q2_back=0, q2_front=0, size=1, total=0] [L162] COND FALSE 0 !(i < size) [L165] 0 return arr; [L136] RET, EXPR 0 create_fresh_int_array(n1) [L136] 0 q1 = create_fresh_int_array(n1) [L137] CALL, EXPR 0 create_fresh_int_array(n2) [L158] CALL 0 assume_abort_if_not(size >= 0) [L38] COND FALSE 0 !(!cond) [L158] RET 0 assume_abort_if_not(size >= 0) [L159] CALL 0 assume_abort_if_not(size <= (((size_t) 4294967295) / sizeof(int))) [L38] COND FALSE 0 !(!cond) [L159] RET 0 assume_abort_if_not(size <= (((size_t) 4294967295) / sizeof(int))) [L161] 0 int* arr = (int*)malloc(sizeof(int) * (size_t)size); [L162] 0 int i = 0; VAL [C=5, N=1, \old(size)=1, arr={-4:0}, i=0, i=0, j=0, n1=1, n2=1, q1={-3:0}, q1_back=0, q1_front=0, q2={0:0}, q2_back=0, q2_front=0, size=1, total=0] [L162] COND TRUE 0 i < size [L163] 0 arr[i] = __VERIFIER_nondet_int() [L162] 0 i++ VAL [C=5, N=1, \old(size)=1, arr={-4:0}, i=0, i=1, j=0, n1=1, n2=1, q1={-3:0}, q1_back=0, q1_front=0, q2={0:0}, q2_back=0, q2_front=0, size=1, total=0] [L162] COND FALSE 0 !(i < size) [L165] 0 return arr; [L137] RET, EXPR 0 create_fresh_int_array(n2) [L137] 0 q2 = create_fresh_int_array(n2) [L139] CALL 0 assume_abort_if_not(C > -2147483648 && N >= 0) [L38] COND FALSE 0 !(!cond) [L139] RET 0 assume_abort_if_not(C > -2147483648 && N >= 0) [L142] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [C=5, N=1, i=0, j=0, n1=1, n2=1, q1={-3:0}, q1_back=0, q1_front=0, q2={-4:0}, q2_back=0, q2_front=0, t1=-2, total=0] [L49] 1 _Bool cond = i < N; VAL [C=5, N=1, \old(_argptr)={0:0}, _argptr={0:0}, cond=1, i=0, j=0, n1=1, n2=1, q1={-3:0}, q1_back=0, q1_front=0, q2={-4:0}, q2_back=0, q2_front=0, total=0] [L51] COND TRUE 1 \read(cond) VAL [C=5, N=1, \old(_argptr)={0:0}, _argptr={0:0}, cond=1, i=0, j=0, n1=1, n2=1, q1={-3:0}, q1_back=0, q1_front=0, q2={-4:0}, q2_back=0, q2_front=0, total=0] [L143] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) VAL [C=5, N=1, i=0, j=0, n1=1, n2=1, q1={-3:0}, q1_back=0, q1_front=0, q2={-4:0}, q2_back=0, q2_front=0, t1=-2, t2=-1, total=0] [L70] 2 _Bool cond = j < N; VAL [C=5, N=1, \old(_argptr)={0:0}, _argptr={0:0}, cond=1, i=0, j=0, n1=1, n2=1, q1={-3:0}, q1_back=0, q1_front=0, q2={-4:0}, q2_back=0, q2_front=0, total=0] [L72] COND TRUE 2 \read(cond) VAL [C=5, N=1, \old(_argptr)={0:0}, _argptr={0:0}, cond=1, i=0, j=0, n1=1, n2=1, q1={-3:0}, q1_back=0, q1_front=0, q2={-4:0}, q2_back=0, q2_front=0, total=0] [L74] CALL 2 assume_abort_if_not(q2_back >= 0 && q2_back < n2) [L38] COND FALSE 2 !(!cond) [L74] RET 2 assume_abort_if_not(q2_back >= 0 && q2_back < n2) [L75] EXPR 2 q2[q2_back] [L75] CALL 2 assume_abort_if_not(q2[q2_back] == -C) [L38] COND FALSE 2 !(!cond) [L75] RET 2 assume_abort_if_not(q2[q2_back] == -C) [L76] 2 j++ VAL [C=5, N=1, \old(_argptr)={0:0}, _argptr={0:0}, cond=1, i=0, j=1, n1=1, n2=1, q1={-3:0}, q1_back=0, q1_front=0, q2={-4:0}, q2_back=0, q2_front=0, total=0] [L79] 2 q2_back++ VAL [C=5, N=1, \old(_argptr)={0:0}, _argptr={0:0}, cond=1, i=0, j=1, n1=1, n2=1, q1={-3:0}, q1_back=0, q1_front=0, q2={-4:0}, q2_back=1, q2_front=0, total=0] [L82] 2 cond = j < N VAL [C=5, N=1, \old(_argptr)={0:0}, _argptr={0:0}, cond=0, i=0, j=1, n1=1, n2=1, q1={-3:0}, q1_back=0, q1_front=0, q2={-4:0}, q2_back=1, q2_front=0, total=0] [L72] COND FALSE 2 !(\read(cond)) [L86] 2 return 0; [L144] FCALL, FORK 0 pthread_create(&t3, 0, thread3, 0) VAL [C=5, N=1, i=0, j=1, n1=1, n2=1, q1={-3:0}, q1_back=0, q1_front=0, q2={-4:0}, q2_back=1, q2_front=0, t1=-2, t2=-1, t3=0, total=0] [L53] CALL 1 assume_abort_if_not(q1_back >= 0 && q1_back < n1) [L38] COND FALSE 1 !(!cond) [L53] RET 1 assume_abort_if_not(q1_back >= 0 && q1_back < n1) [L54] EXPR 1 q1[q1_back] [L54] CALL 1 assume_abort_if_not(q1[q1_back] == C) [L38] COND FALSE 1 !(!cond) [L54] RET 1 assume_abort_if_not(q1[q1_back] == C) [L55] 1 i++ VAL [C=5, N=1, \old(_argptr)={0:0}, _argptr={0:0}, cond=1, i=1, j=1, n1=1, n2=1, q1={-3:0}, q1_back=0, q1_front=0, q2={-4:0}, q2_back=1, q2_front=0, total=0] [L91] 3 _Bool cond = i < N || q1_front < q1_back; VAL [C=5, N=1, \old(_argptr)={0:0}, _argptr={0:0}, cond=0, i=1, j=1, n1=1, n2=1, q1={-3:0}, q1_back=0, q1_front=0, q2={-4:0}, q2_back=1, q2_front=0, total=0] [L93] COND FALSE 3 !(\read(cond)) [L104] 3 return 0; [L145] FCALL, FORK 0 pthread_create(&t4, 0, thread4, 0) VAL [C=5, N=1, i=1, j=1, n1=1, n2=1, q1={-3:0}, q1_back=0, q1_front=0, q2={-4:0}, q2_back=1, q2_front=0, t1=-2, t2=-1, t3=0, t4=1, total=0] [L109] 4 _Bool cond = j < N || q2_front < q2_back; VAL [C=5, N=1, \old(_argptr)={0:0}, _argptr={0:0}, cond=1, i=1, j=1, n1=1, n2=1, q1={-3:0}, q1_back=0, q1_front=0, q2={-4:0}, q2_back=1, q2_front=0, total=0] [L111] COND TRUE 4 \read(cond) VAL [C=5, N=1, \old(_argptr)={0:0}, _argptr={0:0}, cond=1, i=1, j=1, n1=1, n2=1, q1={-3:0}, q1_back=0, q1_front=0, q2={-4:0}, q2_back=1, q2_front=0, total=0] [L113] CALL 4 assume_abort_if_not(q2_front < q2_back && q2_front >= 0 && q2_front < n2) [L38] COND FALSE 4 !(!cond) [L113] RET 4 assume_abort_if_not(q2_front < q2_back && q2_front >= 0 && q2_front < n2) [L114] EXPR 4 q2[q2_front] [L114] CALL, EXPR 4 plus(total, q2[q2_front]) [L169] CALL 4 assume_abort_if_not(b >= 0 || a >= -2147483648 - b) [L38] COND FALSE 4 !(!cond) [L169] RET 4 assume_abort_if_not(b >= 0 || a >= -2147483648 - b) [L170] CALL 4 assume_abort_if_not(b <= 0 || a <= 2147483647 - b) [L38] COND FALSE 4 !(!cond) [L170] RET 4 assume_abort_if_not(b <= 0 || a <= 2147483647 - b) [L171] 4 return a + b; [L114] RET, EXPR 4 plus(total, q2[q2_front]) [L114] 4 total = plus(total, q2[q2_front]) [L115] 4 q2_front++ VAL [C=5, N=1, \old(_argptr)={0:0}, _argptr={0:0}, cond=1, i=1, j=1, n1=1, n2=1, q1={-3:0}, q1_back=0, q1_front=0, q2={-4:0}, q2_back=1, q2_front=1, total=-5] [L118] 4 cond = j < N || q2_front < q2_back VAL [C=5, N=1, \old(_argptr)={0:0}, _argptr={0:0}, cond=0, i=1, j=1, n1=1, n2=1, q1={-3:0}, q1_back=0, q1_front=0, q2={-4:0}, q2_back=1, q2_front=1, total=-5] [L111] COND FALSE 4 !(\read(cond)) [L122] 4 return 0; [L58] 1 q1_back++ VAL [C=5, N=1, \old(_argptr)={0:0}, _argptr={0:0}, cond=1, i=1, j=1, n1=1, n2=1, q1={-3:0}, q1_back=1, q1_front=0, q2={-4:0}, q2_back=1, q2_front=1, total=-5] [L61] 1 cond = i < N VAL [C=5, N=1, \old(_argptr)={0:0}, _argptr={0:0}, cond=0, i=1, j=1, n1=1, n2=1, q1={-3:0}, q1_back=1, q1_front=0, q2={-4:0}, q2_back=1, q2_front=1, total=-5] [L51] COND FALSE 1 !(\read(cond)) [L65] 1 return 0; [L146] FCALL, JOIN 1 pthread_join(t1, 0) VAL [C=5, N=1, i=1, j=1, n1=1, n2=1, q1={-3:0}, q1_back=1, q1_front=0, q2={-4:0}, q2_back=1, q2_front=1, t1=-2, t2=-1, t3=0, t4=1, total=-5] [L147] FCALL, JOIN 2 pthread_join(t2, 0) VAL [C=5, N=1, i=1, j=1, n1=1, n2=1, q1={-3:0}, q1_back=1, q1_front=0, q2={-4:0}, q2_back=1, q2_front=1, t1=-2, t2=-1, t3=0, t4=1, total=-5] [L148] FCALL, JOIN 3 pthread_join(t3, 0) VAL [C=5, N=1, i=1, j=1, n1=1, n2=1, q1={-3:0}, q1_back=1, q1_front=0, q2={-4:0}, q2_back=1, q2_front=1, t1=-2, t2=-1, t3=0, t4=1, total=-5] [L149] FCALL, JOIN 4 pthread_join(t4, 0) VAL [C=5, N=1, i=1, j=1, n1=1, n2=1, q1={-3:0}, q1_back=1, q1_front=0, q2={-4:0}, q2_back=1, q2_front=1, t1=-2, t2=-1, t3=0, t4=1, total=-5] [L151] CALL 0 assume_abort_if_not(total != 0) [L38] COND FALSE 0 !(!cond) [L151] RET 0 assume_abort_if_not(total != 0) [L152] CALL 0 reach_error() [L21] 0 __assert_fail("0", "popl20-more-buffer-mult.wvr.c", 21, __extension__ __PRETTY_FUNCTION__) VAL [C=5, N=1, i=1, j=1, n1=1, n2=1, q1={-3:0}, q1_back=1, q1_front=0, q2={-4:0}, q2_back=1, q2_front=1, total=-5] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 125]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 142]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 144]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 143]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 145]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 99 locations, 26 error locations. Started 1 CEGAR loops. OverallTime: 67.2s, OverallIterations: 33, TraceHistogramMax: 2, PathProgramHistogramMax: 9, EmptinessCheckTime: 0.8s, AutomataDifference: 31.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5002 SdHoareTripleChecker+Valid, 12.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5002 mSDsluCounter, 3193 SdHoareTripleChecker+Invalid, 10.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2435 mSDsCounter, 206 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 11911 IncrementalHoareTripleChecker+Invalid, 12117 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 206 mSolverCounterUnsat, 758 mSDtfsCounter, 11911 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 727 GetRequests, 288 SyntacticMatches, 0 SemanticMatches, 439 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11644 ImplicationChecksByTransitivity, 11.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16793occurred in iteration=6, InterpolantAutomatonStates: 414, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 16.0s AutomataMinimizationTime, 32 MinimizatonAttempts, 60822 StatesRemovedByMinimization, 24 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 13.0s InterpolantComputationTime, 1103 NumberOfCodeBlocks, 1103 NumberOfCodeBlocksAsserted, 43 NumberOfCheckSat, 1139 ConstructedInterpolants, 3 QuantifiedInterpolants, 7402 SizeOfPredicates, 47 NumberOfNonLiveVariables, 1691 ConjunctsInSsa, 118 ConjunctsInUnsatCore, 45 InterpolantComputations, 28 PerfectInterpolantSequences, 78/100 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 [2024-11-14 02:43:15,791 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with 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/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-more-buffer-mult3.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7888761977ccc49b1a75199021e374591654c6a4364e63bfc6c86e1c7bb7d64b --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 02:43:18,915 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 02:43:19,042 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2024-11-14 02:43:19,049 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 02:43:19,051 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 02:43:19,094 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 02:43:19,095 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 02:43:19,096 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 02:43:19,096 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 02:43:19,096 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 02:43:19,096 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 02:43:19,097 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 02:43:19,097 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 02:43:19,097 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 02:43:19,097 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 02:43:19,097 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 02:43:19,098 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-14 02:43:19,098 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-14 02:43:19,098 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 02:43:19,098 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 02:43:19,098 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 02:43:19,098 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 02:43:19,099 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 02:43:19,099 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-14 02:43:19,099 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-14 02:43:19,099 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-14 02:43:19,099 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 02:43:19,099 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-14 02:43:19,100 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-14 02:43:19,100 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 02:43:19,100 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-14 02:43:19,100 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-14 02:43:19,100 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 02:43:19,100 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 02:43:19,101 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 02:43:19,101 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-14 02:43:19,101 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 02:43:19,101 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 02:43:19,102 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 02:43:19,102 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 02:43:19,102 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 02:43:19,102 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2024-11-14 02:43:19,102 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-14 02:43:19,102 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 02:43:19,102 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 02:43:19,102 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E 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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan 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 -> 7888761977ccc49b1a75199021e374591654c6a4364e63bfc6c86e1c7bb7d64b [2024-11-14 02:43:19,505 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 02:43:19,533 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 02:43:19,538 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 02:43:19,539 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 02:43:19,539 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 02:43:19,541 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/weaver/popl20-more-buffer-mult3.wvr.c Unable to find full path for "g++" [2024-11-14 02:43:21,770 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 02:43:22,066 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 02:43:22,066 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/sv-benchmarks/c/weaver/popl20-more-buffer-mult3.wvr.c [2024-11-14 02:43:22,086 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/data/ae71e8693/107093d7426f46b89e707e4643b7e004/FLAGff0a64ad9 [2024-11-14 02:43:22,110 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/data/ae71e8693/107093d7426f46b89e707e4643b7e004 [2024-11-14 02:43:22,113 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 02:43:22,116 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 02:43:22,119 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 02:43:22,120 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 02:43:22,125 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 02:43:22,126 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 02:43:22" (1/1) ... [2024-11-14 02:43:22,127 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73eea29a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:43:22, skipping insertion in model container [2024-11-14 02:43:22,130 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 02:43:22" (1/1) ... [2024-11-14 02:43:22,156 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 02:43:22,453 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 02:43:22,466 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 02:43:22,489 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 02:43:22,558 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 02:43:22,591 INFO L204 MainTranslator]: Completed translation [2024-11-14 02:43:22,592 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:43:22 WrapperNode [2024-11-14 02:43:22,593 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 02:43:22,595 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 02:43:22,595 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 02:43:22,596 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 02:43:22,609 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:43:22" (1/1) ... [2024-11-14 02:43:22,625 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:43:22" (1/1) ... [2024-11-14 02:43:22,678 INFO L138 Inliner]: procedures = 28, calls = 61, calls flagged for inlining = 19, calls inlined = 23, statements flattened = 282 [2024-11-14 02:43:22,679 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 02:43:22,680 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 02:43:22,680 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 02:43:22,680 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 02:43:22,691 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:43:22" (1/1) ... [2024-11-14 02:43:22,691 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:43:22" (1/1) ... [2024-11-14 02:43:22,704 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:43:22" (1/1) ... [2024-11-14 02:43:22,704 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:43:22" (1/1) ... [2024-11-14 02:43:22,728 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:43:22" (1/1) ... [2024-11-14 02:43:22,737 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:43:22" (1/1) ... [2024-11-14 02:43:22,739 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:43:22" (1/1) ... [2024-11-14 02:43:22,741 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:43:22" (1/1) ... [2024-11-14 02:43:22,745 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 02:43:22,746 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 02:43:22,746 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 02:43:22,746 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 02:43:22,747 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:43:22" (1/1) ... [2024-11-14 02:43:22,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 02:43:22,787 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 02:43:22,802 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 02:43:22,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 02:43:22,848 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 02:43:22,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2024-11-14 02:43:22,849 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2024-11-14 02:43:22,849 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-14 02:43:22,849 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-14 02:43:22,849 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-14 02:43:22,850 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-14 02:43:22,850 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-14 02:43:22,850 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-14 02:43:22,850 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-11-14 02:43:22,851 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-11-14 02:43:22,851 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-14 02:43:22,851 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-14 02:43:22,851 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-14 02:43:22,851 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 02:43:22,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 02:43:22,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2024-11-14 02:43:22,853 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-14 02:43:23,055 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 02:43:23,058 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 02:43:23,922 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-14 02:43:23,922 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 02:43:24,496 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 02:43:24,497 INFO L316 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-14 02:43:24,497 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 02:43:24 BoogieIcfgContainer [2024-11-14 02:43:24,498 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 02:43:24,501 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 02:43:24,501 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 02:43:24,507 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 02:43:24,507 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 02:43:22" (1/3) ... [2024-11-14 02:43:24,508 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2880da96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 02:43:24, skipping insertion in model container [2024-11-14 02:43:24,508 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 02:43:22" (2/3) ... [2024-11-14 02:43:24,509 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2880da96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 02:43:24, skipping insertion in model container [2024-11-14 02:43:24,509 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 02:43:24" (3/3) ... [2024-11-14 02:43:24,510 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-mult3.wvr.c [2024-11-14 02:43:24,531 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 02:43:24,532 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-more-buffer-mult3.wvr.c that has 5 procedures, 61 locations, 1 initial locations, 6 loop locations, and 14 error locations. [2024-11-14 02:43:24,533 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-14 02:43:24,645 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-14 02:43:24,686 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 73 places, 66 transitions, 160 flow [2024-11-14 02:43:25,896 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 12507 states, 12421 states have (on average 4.419209403429676) internal successors, (54891), 12506 states have internal predecessors, (54891), 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) [2024-11-14 02:43:25,946 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 02:43:25,969 INFO L333 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, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, 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;@30b91e34, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 02:43:25,969 INFO L334 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2024-11-14 02:43:26,021 INFO L276 IsEmpty]: Start isEmpty. Operand has 12507 states, 12421 states have (on average 4.419209403429676) internal successors, (54891), 12506 states have internal predecessors, (54891), 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) [2024-11-14 02:43:26,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-14 02:43:26,029 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:43:26,030 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-14 02:43:26,031 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-14 02:43:26,038 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:43:26,039 INFO L85 PathProgramCache]: Analyzing trace with hash 829171, now seen corresponding path program 1 times [2024-11-14 02:43:26,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 02:43:26,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1966957550] [2024-11-14 02:43:26,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:43:26,059 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 02:43:26,060 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 02:43:26,064 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 02:43:26,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-11-14 02:43:26,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:43:26,201 INFO L255 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-14 02:43:26,206 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:43:26,275 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-14 02:43:26,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:43:26,303 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 02:43:26,303 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 02:43:26,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1966957550] [2024-11-14 02:43:26,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1966957550] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:43:26,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:43:26,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-14 02:43:26,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513425273] [2024-11-14 02:43:26,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:43:26,313 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 02:43:26,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 02:43:26,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 02:43:26,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 02:43:26,384 INFO L87 Difference]: Start difference. First operand has 12507 states, 12421 states have (on average 4.419209403429676) internal successors, (54891), 12506 states have internal predecessors, (54891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2024-11-14 02:43:27,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:43:27,150 INFO L93 Difference]: Finished difference Result 12507 states and 54891 transitions. [2024-11-14 02:43:27,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 02:43:27,153 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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 3 [2024-11-14 02:43:27,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:43:27,419 INFO L225 Difference]: With dead ends: 12507 [2024-11-14 02:43:27,420 INFO L226 Difference]: Without dead ends: 12503 [2024-11-14 02:43:27,433 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 02:43:27,437 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 5 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 02:43:27,438 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 34 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-14 02:43:27,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12503 states. [2024-11-14 02:43:28,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12503 to 12503. [2024-11-14 02:43:28,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12503 states, 12420 states have (on average 4.419243156199678) internal successors, (54887), 12502 states have internal predecessors, (54887), 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) [2024-11-14 02:43:28,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12503 states to 12503 states and 54887 transitions. [2024-11-14 02:43:28,761 INFO L78 Accepts]: Start accepts. Automaton has 12503 states and 54887 transitions. Word has length 3 [2024-11-14 02:43:28,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:43:28,762 INFO L471 AbstractCegarLoop]: Abstraction has 12503 states and 54887 transitions. [2024-11-14 02:43:28,767 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2024-11-14 02:43:28,768 INFO L276 IsEmpty]: Start isEmpty. Operand 12503 states and 54887 transitions. [2024-11-14 02:43:28,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-14 02:43:28,768 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:43:28,768 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-14 02:43:28,779 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2024-11-14 02:43:28,973 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 02:43:28,974 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-14 02:43:28,975 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:43:28,975 INFO L85 PathProgramCache]: Analyzing trace with hash 829172, now seen corresponding path program 1 times [2024-11-14 02:43:28,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 02:43:28,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1303941493] [2024-11-14 02:43:28,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:43:28,976 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 02:43:28,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 02:43:28,985 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 02:43:28,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-11-14 02:43:29,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:43:29,243 INFO L255 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-14 02:43:29,247 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:43:29,304 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-11-14 02:43:29,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:43:29,530 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 02:43:29,530 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 02:43:29,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1303941493] [2024-11-14 02:43:29,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1303941493] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:43:29,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:43:29,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 02:43:29,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744179441] [2024-11-14 02:43:29,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:43:29,535 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 02:43:29,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 02:43:29,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 02:43:29,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 02:43:29,536 INFO L87 Difference]: Start difference. First operand 12503 states and 54887 transitions. Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 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) [2024-11-14 02:43:30,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:43:30,333 INFO L93 Difference]: Finished difference Result 12509 states and 54895 transitions. [2024-11-14 02:43:30,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 02:43:30,335 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 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 3 [2024-11-14 02:43:30,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:43:30,519 INFO L225 Difference]: With dead ends: 12509 [2024-11-14 02:43:30,519 INFO L226 Difference]: Without dead ends: 12507 [2024-11-14 02:43:30,530 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-14 02:43:30,531 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 2 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-14 02:43:30,532 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 53 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-14 02:43:30,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12507 states. [2024-11-14 02:43:31,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12507 to 12507. [2024-11-14 02:43:31,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12507 states, 12424 states have (on average 4.418303283966517) internal successors, (54893), 12506 states have internal predecessors, (54893), 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) [2024-11-14 02:43:31,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12507 states to 12507 states and 54893 transitions. [2024-11-14 02:43:31,323 INFO L78 Accepts]: Start accepts. Automaton has 12507 states and 54893 transitions. Word has length 3 [2024-11-14 02:43:31,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:43:31,324 INFO L471 AbstractCegarLoop]: Abstraction has 12507 states and 54893 transitions. [2024-11-14 02:43:31,324 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 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) [2024-11-14 02:43:31,324 INFO L276 IsEmpty]: Start isEmpty. Operand 12507 states and 54893 transitions. [2024-11-14 02:43:31,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-14 02:43:31,328 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:43:31,329 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1] [2024-11-14 02:43:31,334 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2024-11-14 02:43:31,530 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 02:43:31,531 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-14 02:43:31,531 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:43:31,535 INFO L85 PathProgramCache]: Analyzing trace with hash 796861029, now seen corresponding path program 1 times [2024-11-14 02:43:31,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 02:43:31,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [109655726] [2024-11-14 02:43:31,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:43:31,536 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 02:43:31,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 02:43:31,542 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 02:43:31,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-11-14 02:43:31,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:43:31,661 INFO L255 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-14 02:43:31,664 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:43:31,695 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-11-14 02:43:32,040 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:43:32,041 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 02:43:32,579 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:43:32,579 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 02:43:32,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [109655726] [2024-11-14 02:43:32,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [109655726] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 02:43:32,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1439273144] [2024-11-14 02:43:32,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:43:32,580 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 02:43:32,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 02:43:32,590 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 02:43:32,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2024-11-14 02:43:32,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:43:32,803 INFO L255 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-14 02:43:32,805 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:43:32,826 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-11-14 02:43:33,189 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:43:33,190 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 02:43:33,336 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:43:33,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1439273144] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 02:43:33,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1171515388] [2024-11-14 02:43:33,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:43:33,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:43:33,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 02:43:33,342 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 02:43:33,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-14 02:43:33,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:43:33,452 INFO L255 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-14 02:43:33,454 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:43:33,476 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-11-14 02:43:33,625 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:43:33,625 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 02:43:33,740 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:43:33,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1171515388] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 02:43:33,741 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-14 02:43:33,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 3, 3] total 9 [2024-11-14 02:43:33,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29173310] [2024-11-14 02:43:33,745 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-14 02:43:33,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-14 02:43:33,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 02:43:33,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-14 02:43:33,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2024-11-14 02:43:33,746 INFO L87 Difference]: Start difference. First operand 12507 states and 54893 transitions. Second operand has 11 states, 10 states have (on average 1.5) internal successors, (15), 10 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) [2024-11-14 02:43:35,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:43:35,917 INFO L93 Difference]: Finished difference Result 12521 states and 54917 transitions. [2024-11-14 02:43:35,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-14 02:43:35,923 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.5) internal successors, (15), 10 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 5 [2024-11-14 02:43:35,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:43:36,080 INFO L225 Difference]: With dead ends: 12521 [2024-11-14 02:43:36,080 INFO L226 Difference]: Without dead ends: 12519 [2024-11-14 02:43:36,089 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2024-11-14 02:43:36,094 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 10 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-14 02:43:36,094 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 53 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-14 02:43:36,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12519 states. [2024-11-14 02:43:36,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12519 to 12519. [2024-11-14 02:43:36,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12519 states, 12436 states have (on average 4.415487294950145) internal successors, (54911), 12518 states have internal predecessors, (54911), 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) [2024-11-14 02:43:36,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12519 states to 12519 states and 54911 transitions. [2024-11-14 02:43:36,990 INFO L78 Accepts]: Start accepts. Automaton has 12519 states and 54911 transitions. Word has length 5 [2024-11-14 02:43:36,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:43:36,991 INFO L471 AbstractCegarLoop]: Abstraction has 12519 states and 54911 transitions. [2024-11-14 02:43:36,991 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.5) internal successors, (15), 10 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) [2024-11-14 02:43:36,991 INFO L276 IsEmpty]: Start isEmpty. Operand 12519 states and 54911 transitions. [2024-11-14 02:43:36,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-14 02:43:36,991 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:43:36,991 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:43:37,046 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-14 02:43:37,198 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2024-11-14 02:43:37,400 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (5)] Ended with exit code 0 [2024-11-14 02:43:37,598 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt [2024-11-14 02:43:37,598 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-14 02:43:37,599 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:43:37,599 INFO L85 PathProgramCache]: Analyzing trace with hash -1622247646, now seen corresponding path program 1 times [2024-11-14 02:43:37,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 02:43:37,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1036972884] [2024-11-14 02:43:37,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:43:37,600 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 02:43:37,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 02:43:37,606 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 02:43:37,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2024-11-14 02:43:37,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:43:37,726 INFO L255 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-14 02:43:37,728 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:43:37,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:43:37,824 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 02:43:37,825 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 02:43:37,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1036972884] [2024-11-14 02:43:37,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1036972884] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:43:37,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:43:37,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 02:43:37,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375636300] [2024-11-14 02:43:37,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:43:37,826 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 02:43:37,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 02:43:37,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 02:43:37,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 02:43:37,826 INFO L87 Difference]: Start difference. First operand 12519 states and 54911 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2024-11-14 02:43:38,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:43:38,944 INFO L93 Difference]: Finished difference Result 28899 states and 130118 transitions. [2024-11-14 02:43:38,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 02:43:38,945 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 8 [2024-11-14 02:43:38,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:43:39,151 INFO L225 Difference]: With dead ends: 28899 [2024-11-14 02:43:39,152 INFO L226 Difference]: Without dead ends: 17072 [2024-11-14 02:43:39,194 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 02:43:39,195 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 39 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-14 02:43:39,196 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 55 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-14 02:43:39,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17072 states. [2024-11-14 02:43:39,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17072 to 16818. [2024-11-14 02:43:40,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16818 states, 16711 states have (on average 4.3292442104003355) internal successors, (72346), 16817 states have internal predecessors, (72346), 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) [2024-11-14 02:43:40,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16818 states to 16818 states and 72346 transitions. [2024-11-14 02:43:40,187 INFO L78 Accepts]: Start accepts. Automaton has 16818 states and 72346 transitions. Word has length 8 [2024-11-14 02:43:40,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:43:40,188 INFO L471 AbstractCegarLoop]: Abstraction has 16818 states and 72346 transitions. [2024-11-14 02:43:40,188 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2024-11-14 02:43:40,188 INFO L276 IsEmpty]: Start isEmpty. Operand 16818 states and 72346 transitions. [2024-11-14 02:43:40,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-14 02:43:40,191 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:43:40,191 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:43:40,194 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2024-11-14 02:43:40,392 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 02:43:40,392 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-14 02:43:40,392 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:43:40,393 INFO L85 PathProgramCache]: Analyzing trace with hash -335250863, now seen corresponding path program 1 times [2024-11-14 02:43:40,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 02:43:40,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1233555957] [2024-11-14 02:43:40,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:43:40,393 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 02:43:40,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 02:43:40,396 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 02:43:40,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2024-11-14 02:43:40,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:43:40,527 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-14 02:43:40,530 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:43:40,540 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-14 02:43:40,607 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-14 02:43:40,608 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2024-11-14 02:43:40,705 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 02:43:40,706 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 02:43:40,706 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 02:43:40,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1233555957] [2024-11-14 02:43:40,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1233555957] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:43:40,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:43:40,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 02:43:40,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212833249] [2024-11-14 02:43:40,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:43:40,708 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 02:43:40,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 02:43:40,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 02:43:40,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 02:43:40,709 INFO L87 Difference]: Start difference. First operand 16818 states and 72346 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 02:43:41,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:43:41,442 INFO L93 Difference]: Finished difference Result 16818 states and 72346 transitions. [2024-11-14 02:43:41,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 02:43:41,442 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-11-14 02:43:41,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:43:41,572 INFO L225 Difference]: With dead ends: 16818 [2024-11-14 02:43:41,574 INFO L226 Difference]: Without dead ends: 14126 [2024-11-14 02:43:41,584 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-14 02:43:41,587 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 49 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 02:43:41,587 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 34 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-14 02:43:41,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14126 states. [2024-11-14 02:43:42,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14126 to 14126. [2024-11-14 02:43:42,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14126 states, 14064 states have (on average 4.298634812286689) internal successors, (60456), 14125 states have internal predecessors, (60456), 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) [2024-11-14 02:43:42,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14126 states to 14126 states and 60456 transitions. [2024-11-14 02:43:42,487 INFO L78 Accepts]: Start accepts. Automaton has 14126 states and 60456 transitions. Word has length 10 [2024-11-14 02:43:42,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:43:42,487 INFO L471 AbstractCegarLoop]: Abstraction has 14126 states and 60456 transitions. [2024-11-14 02:43:42,488 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 02:43:42,488 INFO L276 IsEmpty]: Start isEmpty. Operand 14126 states and 60456 transitions. [2024-11-14 02:43:42,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-14 02:43:42,488 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:43:42,489 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:43:42,493 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2024-11-14 02:43:42,689 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 02:43:42,690 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-14 02:43:42,690 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:43:42,690 INFO L85 PathProgramCache]: Analyzing trace with hash -335250862, now seen corresponding path program 1 times [2024-11-14 02:43:42,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 02:43:42,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2119416412] [2024-11-14 02:43:42,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:43:42,691 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 02:43:42,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 02:43:42,694 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 02:43:42,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2024-11-14 02:43:42,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:43:42,820 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-14 02:43:42,822 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:43:42,865 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-11-14 02:43:42,878 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-14 02:43:43,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 02:43:43,173 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-14 02:43:43,201 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-14 02:43:43,202 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-14 02:43:43,364 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:43:43,364 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 02:43:44,936 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:43:44,937 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 02:43:44,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2119416412] [2024-11-14 02:43:44,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2119416412] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 02:43:44,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1369134974] [2024-11-14 02:43:44,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:43:44,938 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 02:43:44,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 02:43:44,940 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 02:43:44,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2024-11-14 02:43:45,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:43:45,208 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-14 02:43:45,211 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:43:45,228 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-14 02:43:45,239 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-11-14 02:43:45,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 02:43:45,562 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-14 02:43:45,586 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-14 02:43:45,586 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-14 02:43:45,698 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:43:45,699 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 02:43:46,495 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:43:46,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1369134974] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 02:43:46,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [589738442] [2024-11-14 02:43:46,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:43:46,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:43:46,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 02:43:46,498 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 02:43:46,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-14 02:43:46,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:43:46,619 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-14 02:43:46,621 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:43:46,648 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-11-14 02:43:46,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 02:43:46,978 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-14 02:43:46,995 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-14 02:43:46,995 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-14 02:43:47,097 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:43:47,097 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 02:43:47,764 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 02:43:47,765 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 65 treesize of output 89 [2024-11-14 02:43:48,861 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:43:48,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [589738442] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 02:43:48,861 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-14 02:43:48,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 15 [2024-11-14 02:43:48,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110970645] [2024-11-14 02:43:48,862 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-14 02:43:48,862 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-14 02:43:48,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 02:43:48,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-14 02:43:48,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2024-11-14 02:43:48,863 INFO L87 Difference]: Start difference. First operand 14126 states and 60456 transitions. Second operand has 17 states, 16 states have (on average 1.875) internal successors, (30), 16 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 02:43:59,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:43:59,516 INFO L93 Difference]: Finished difference Result 31388 states and 138220 transitions. [2024-11-14 02:43:59,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-14 02:43:59,518 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.875) internal successors, (30), 16 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-11-14 02:43:59,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:43:59,767 INFO L225 Difference]: With dead ends: 31388 [2024-11-14 02:43:59,767 INFO L226 Difference]: Without dead ends: 29020 [2024-11-14 02:43:59,787 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=133, Invalid=373, Unknown=0, NotChecked=0, Total=506 [2024-11-14 02:43:59,788 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 113 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 429 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2024-11-14 02:43:59,791 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 194 Invalid, 449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 429 Invalid, 0 Unknown, 0 Unchecked, 8.5s Time] [2024-11-14 02:43:59,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29020 states. [2024-11-14 02:44:00,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29020 to 21319. [2024-11-14 02:44:00,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21319 states, 21257 states have (on average 4.345062802841417) internal successors, (92363), 21318 states have internal predecessors, (92363), 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) [2024-11-14 02:44:00,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21319 states to 21319 states and 92363 transitions. [2024-11-14 02:44:00,725 INFO L78 Accepts]: Start accepts. Automaton has 21319 states and 92363 transitions. Word has length 10 [2024-11-14 02:44:00,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:44:00,725 INFO L471 AbstractCegarLoop]: Abstraction has 21319 states and 92363 transitions. [2024-11-14 02:44:00,725 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.875) internal successors, (30), 16 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 02:44:00,726 INFO L276 IsEmpty]: Start isEmpty. Operand 21319 states and 92363 transitions. [2024-11-14 02:44:00,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-14 02:44:00,727 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:44:00,727 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:44:00,731 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2024-11-14 02:44:00,944 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-14 02:44:01,130 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2024-11-14 02:44:01,328 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 02:44:01,328 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-14 02:44:01,329 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:44:01,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1104424718, now seen corresponding path program 1 times [2024-11-14 02:44:01,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 02:44:01,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [3946568] [2024-11-14 02:44:01,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:44:01,329 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 02:44:01,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 02:44:01,331 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 02:44:01,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2024-11-14 02:44:01,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:44:01,417 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-14 02:44:01,419 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:44:01,425 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-14 02:44:01,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:44:01,477 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 02:44:01,477 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 02:44:01,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [3946568] [2024-11-14 02:44:01,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [3946568] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:44:01,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:44:01,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 02:44:01,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084472997] [2024-11-14 02:44:01,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:44:01,478 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 02:44:01,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 02:44:01,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 02:44:01,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 02:44:01,481 INFO L87 Difference]: Start difference. First operand 21319 states and 92363 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 02:44:02,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:44:02,002 INFO L93 Difference]: Finished difference Result 21319 states and 92363 transitions. [2024-11-14 02:44:02,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 02:44:02,003 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-11-14 02:44:02,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:44:02,111 INFO L225 Difference]: With dead ends: 21319 [2024-11-14 02:44:02,111 INFO L226 Difference]: Without dead ends: 16892 [2024-11-14 02:44:02,124 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 02:44:02,124 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 44 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 02:44:02,125 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 34 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 02:44:02,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16892 states. [2024-11-14 02:44:02,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16892 to 16892. [2024-11-14 02:44:02,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16892 states, 16865 states have (on average 4.3264749481174025) internal successors, (72966), 16891 states have internal predecessors, (72966), 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) [2024-11-14 02:44:02,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16892 states to 16892 states and 72966 transitions. [2024-11-14 02:44:02,925 INFO L78 Accepts]: Start accepts. Automaton has 16892 states and 72966 transitions. Word has length 10 [2024-11-14 02:44:02,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:44:02,926 INFO L471 AbstractCegarLoop]: Abstraction has 16892 states and 72966 transitions. [2024-11-14 02:44:02,926 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 02:44:02,926 INFO L276 IsEmpty]: Start isEmpty. Operand 16892 states and 72966 transitions. [2024-11-14 02:44:02,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-14 02:44:02,927 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:44:02,927 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:44:02,932 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2024-11-14 02:44:03,130 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 02:44:03,131 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-14 02:44:03,131 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:44:03,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1104424717, now seen corresponding path program 1 times [2024-11-14 02:44:03,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 02:44:03,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [59647175] [2024-11-14 02:44:03,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:44:03,131 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 02:44:03,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 02:44:03,133 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 02:44:03,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2024-11-14 02:44:03,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:44:03,212 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-14 02:44:03,213 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:44:03,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:44:03,275 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 02:44:03,275 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 02:44:03,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [59647175] [2024-11-14 02:44:03,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [59647175] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:44:03,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:44:03,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 02:44:03,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464101823] [2024-11-14 02:44:03,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:44:03,276 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 02:44:03,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 02:44:03,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 02:44:03,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 02:44:03,276 INFO L87 Difference]: Start difference. First operand 16892 states and 72966 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 02:44:04,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:44:04,068 INFO L93 Difference]: Finished difference Result 40073 states and 176124 transitions. [2024-11-14 02:44:04,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 02:44:04,069 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-11-14 02:44:04,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:44:04,178 INFO L225 Difference]: With dead ends: 40073 [2024-11-14 02:44:04,179 INFO L226 Difference]: Without dead ends: 23048 [2024-11-14 02:44:04,200 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 02:44:04,201 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 32 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 02:44:04,201 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 55 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-14 02:44:04,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23048 states. [2024-11-14 02:44:04,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23048 to 22790. [2024-11-14 02:44:04,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22790 states, 22754 states have (on average 4.234464270018458) internal successors, (96351), 22789 states have internal predecessors, (96351), 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) [2024-11-14 02:44:04,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22790 states to 22790 states and 96351 transitions. [2024-11-14 02:44:04,967 INFO L78 Accepts]: Start accepts. Automaton has 22790 states and 96351 transitions. Word has length 10 [2024-11-14 02:44:04,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:44:04,967 INFO L471 AbstractCegarLoop]: Abstraction has 22790 states and 96351 transitions. [2024-11-14 02:44:04,967 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 02:44:04,967 INFO L276 IsEmpty]: Start isEmpty. Operand 22790 states and 96351 transitions. [2024-11-14 02:44:04,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-14 02:44:04,968 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:44:04,968 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 1, 1] [2024-11-14 02:44:04,971 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2024-11-14 02:44:05,169 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 02:44:05,169 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-14 02:44:05,169 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:44:05,169 INFO L85 PathProgramCache]: Analyzing trace with hash -2009054408, now seen corresponding path program 2 times [2024-11-14 02:44:05,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 02:44:05,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [269401114] [2024-11-14 02:44:05,169 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-14 02:44:05,170 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 02:44:05,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 02:44:05,173 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 02:44:05,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2024-11-14 02:44:05,254 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-14 02:44:05,255 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 02:44:05,257 INFO L255 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-14 02:44:05,258 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:44:05,277 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-11-14 02:44:05,559 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:44:05,559 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 02:44:06,241 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:44:06,241 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 02:44:06,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [269401114] [2024-11-14 02:44:06,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [269401114] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 02:44:06,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [721501013] [2024-11-14 02:44:06,241 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-14 02:44:06,241 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 02:44:06,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 02:44:06,243 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 02:44:06,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2024-11-14 02:44:06,433 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-14 02:44:06,434 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 02:44:06,435 INFO L255 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-14 02:44:06,437 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:44:06,459 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-11-14 02:44:06,999 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:44:06,999 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 02:44:08,193 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:44:08,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [721501013] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 02:44:08,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1006139777] [2024-11-14 02:44:08,193 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-14 02:44:08,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:44:08,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 02:44:08,195 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 02:44:08,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-14 02:44:08,280 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-14 02:44:08,280 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 02:44:08,282 INFO L255 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-14 02:44:08,283 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:44:08,297 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-11-14 02:44:08,471 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:44:08,471 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 02:44:08,769 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:44:08,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1006139777] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 02:44:08,769 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-14 02:44:08,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 17 [2024-11-14 02:44:08,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313479149] [2024-11-14 02:44:08,769 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-14 02:44:08,770 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-14 02:44:08,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 02:44:08,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-14 02:44:08,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2024-11-14 02:44:08,771 INFO L87 Difference]: Start difference. First operand 22790 states and 96351 transitions. Second operand has 19 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 18 states have internal predecessors, (33), 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) [2024-11-14 02:44:12,834 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 02:44:14,835 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 02:44:16,122 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 02:44:18,998 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 02:44:22,688 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 02:44:28,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:44:28,414 INFO L93 Difference]: Finished difference Result 22840 states and 96447 transitions. [2024-11-14 02:44:28,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-14 02:44:28,415 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 18 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-14 02:44:28,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:44:28,541 INFO L225 Difference]: With dead ends: 22840 [2024-11-14 02:44:28,541 INFO L226 Difference]: Without dead ends: 22838 [2024-11-14 02:44:28,547 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=382, Invalid=808, Unknown=0, NotChecked=0, Total=1190 [2024-11-14 02:44:28,547 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 34 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 537 mSolverCounterSat, 99 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 537 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.4s IncrementalHoareTripleChecker+Time [2024-11-14 02:44:28,548 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 172 Invalid, 638 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 537 Invalid, 2 Unknown, 0 Unchecked, 16.4s Time] [2024-11-14 02:44:28,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22838 states. [2024-11-14 02:44:29,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22838 to 22838. [2024-11-14 02:44:29,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22838 states, 22802 states have (on average 4.228708008069468) internal successors, (96423), 22837 states have internal predecessors, (96423), 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) [2024-11-14 02:44:29,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22838 states to 22838 states and 96423 transitions. [2024-11-14 02:44:29,267 INFO L78 Accepts]: Start accepts. Automaton has 22838 states and 96423 transitions. Word has length 11 [2024-11-14 02:44:29,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:44:29,267 INFO L471 AbstractCegarLoop]: Abstraction has 22838 states and 96423 transitions. [2024-11-14 02:44:29,267 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 18 states have internal predecessors, (33), 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) [2024-11-14 02:44:29,267 INFO L276 IsEmpty]: Start isEmpty. Operand 22838 states and 96423 transitions. [2024-11-14 02:44:29,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-14 02:44:29,269 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:44:29,269 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:44:29,271 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2024-11-14 02:44:29,490 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-14 02:44:29,672 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2024-11-14 02:44:29,872 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt [2024-11-14 02:44:29,872 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-14 02:44:29,872 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:44:29,873 INFO L85 PathProgramCache]: Analyzing trace with hash 163606812, now seen corresponding path program 1 times [2024-11-14 02:44:29,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 02:44:29,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1111605830] [2024-11-14 02:44:29,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:44:29,873 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 02:44:29,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 02:44:29,875 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 02:44:29,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2024-11-14 02:44:29,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:44:29,958 INFO L255 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-14 02:44:29,960 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:44:29,972 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-11-14 02:44:30,292 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:44:30,292 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 02:44:31,339 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:44:31,339 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 02:44:31,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1111605830] [2024-11-14 02:44:31,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1111605830] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 02:44:31,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [696366485] [2024-11-14 02:44:31,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:44:31,340 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 02:44:31,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 02:44:31,343 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 02:44:31,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2024-11-14 02:44:31,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:44:31,510 INFO L255 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-14 02:44:31,511 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:44:31,528 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-11-14 02:44:31,831 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:44:31,831 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 02:44:32,548 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:44:32,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [696366485] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 02:44:32,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1796587243] [2024-11-14 02:44:32,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:44:32,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:44:32,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 02:44:32,551 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 02:44:32,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-14 02:44:32,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:44:32,637 INFO L255 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-14 02:44:32,639 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:44:32,650 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-11-14 02:44:32,874 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:44:32,874 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 02:44:33,260 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:44:33,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1796587243] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 02:44:33,261 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-14 02:44:33,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 5, 5, 5, 5] total 13 [2024-11-14 02:44:33,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520923955] [2024-11-14 02:44:33,261 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-14 02:44:33,261 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-14 02:44:33,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 02:44:33,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-14 02:44:33,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2024-11-14 02:44:33,262 INFO L87 Difference]: Start difference. First operand 22838 states and 96423 transitions. Second operand has 14 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 14 states have internal predecessors, (32), 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) [2024-11-14 02:44:37,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:44:37,196 INFO L93 Difference]: Finished difference Result 52883 states and 229383 transitions. [2024-11-14 02:44:37,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-14 02:44:37,197 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 14 states have internal predecessors, (32), 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 12 [2024-11-14 02:44:37,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:44:37,382 INFO L225 Difference]: With dead ends: 52883 [2024-11-14 02:44:37,382 INFO L226 Difference]: Without dead ends: 47120 [2024-11-14 02:44:37,402 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 52 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2024-11-14 02:44:37,402 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 218 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-14 02:44:37,403 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 213 Invalid, 418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 409 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-14 02:44:37,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47120 states. [2024-11-14 02:44:38,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47120 to 34592. [2024-11-14 02:44:38,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34592 states, 34556 states have (on average 4.275234402129876) internal successors, (147735), 34591 states have internal predecessors, (147735), 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) [2024-11-14 02:44:38,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34592 states to 34592 states and 147735 transitions. [2024-11-14 02:44:38,411 INFO L78 Accepts]: Start accepts. Automaton has 34592 states and 147735 transitions. Word has length 12 [2024-11-14 02:44:38,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:44:38,411 INFO L471 AbstractCegarLoop]: Abstraction has 34592 states and 147735 transitions. [2024-11-14 02:44:38,411 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 14 states have internal predecessors, (32), 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) [2024-11-14 02:44:38,411 INFO L276 IsEmpty]: Start isEmpty. Operand 34592 states and 147735 transitions. [2024-11-14 02:44:38,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-14 02:44:38,414 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:44:38,414 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:44:38,431 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-14 02:44:38,616 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (18)] Ended with exit code 0 [2024-11-14 02:44:38,816 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2024-11-14 02:44:39,014 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 02:44:39,015 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-14 02:44:39,015 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:44:39,015 INFO L85 PathProgramCache]: Analyzing trace with hash -419044001, now seen corresponding path program 2 times [2024-11-14 02:44:39,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 02:44:39,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [878878435] [2024-11-14 02:44:39,015 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-14 02:44:39,015 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 02:44:39,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 02:44:39,017 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 02:44:39,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2024-11-14 02:44:39,102 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-14 02:44:39,102 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 02:44:39,104 INFO L255 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-14 02:44:39,105 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:44:39,117 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-11-14 02:44:39,125 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-14 02:44:39,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 02:44:39,264 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-14 02:44:39,274 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-14 02:44:39,275 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-14 02:44:39,336 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-14 02:44:39,336 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 02:44:39,336 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 02:44:39,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [878878435] [2024-11-14 02:44:39,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [878878435] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:44:39,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:44:39,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 02:44:39,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936293206] [2024-11-14 02:44:39,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:44:39,337 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 02:44:39,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 02:44:39,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 02:44:39,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 02:44:39,337 INFO L87 Difference]: Start difference. First operand 34592 states and 147735 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 02:44:40,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:44:40,209 INFO L93 Difference]: Finished difference Result 34592 states and 147735 transitions. [2024-11-14 02:44:40,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 02:44:40,210 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-11-14 02:44:40,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:44:40,326 INFO L225 Difference]: With dead ends: 34592 [2024-11-14 02:44:40,326 INFO L226 Difference]: Without dead ends: 29577 [2024-11-14 02:44:40,335 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 02:44:40,335 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 42 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 02:44:40,336 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 34 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 02:44:40,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29577 states. [2024-11-14 02:44:40,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29577 to 17867. [2024-11-14 02:44:40,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17867 states, 17852 states have (on average 4.196728657853462) internal successors, (74920), 17866 states have internal predecessors, (74920), 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) [2024-11-14 02:44:40,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17867 states to 17867 states and 74920 transitions. [2024-11-14 02:44:40,784 INFO L78 Accepts]: Start accepts. Automaton has 17867 states and 74920 transitions. Word has length 16 [2024-11-14 02:44:40,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:44:40,785 INFO L471 AbstractCegarLoop]: Abstraction has 17867 states and 74920 transitions. [2024-11-14 02:44:40,785 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 02:44:40,785 INFO L276 IsEmpty]: Start isEmpty. Operand 17867 states and 74920 transitions. [2024-11-14 02:44:40,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-14 02:44:40,793 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:44:40,793 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:44:40,799 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Ended with exit code 0 [2024-11-14 02:44:40,993 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 02:44:40,994 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-14 02:44:40,994 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:44:40,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1615844329, now seen corresponding path program 2 times [2024-11-14 02:44:40,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 02:44:40,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1065131459] [2024-11-14 02:44:40,995 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-14 02:44:40,995 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 02:44:40,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 02:44:40,998 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 02:44:40,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2024-11-14 02:44:41,078 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-14 02:44:41,078 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 02:44:41,080 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-14 02:44:41,081 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:44:41,089 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-11-14 02:44:41,256 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-14 02:44:41,256 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 02:44:41,256 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 02:44:41,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1065131459] [2024-11-14 02:44:41,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1065131459] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:44:41,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:44:41,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 02:44:41,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325202609] [2024-11-14 02:44:41,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:44:41,257 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 02:44:41,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 02:44:41,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 02:44:41,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 02:44:41,257 INFO L87 Difference]: Start difference. First operand 17867 states and 74920 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2024-11-14 02:44:41,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:44:41,807 INFO L93 Difference]: Finished difference Result 17867 states and 74920 transitions. [2024-11-14 02:44:41,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 02:44:41,807 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 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 18 [2024-11-14 02:44:41,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:44:41,867 INFO L225 Difference]: With dead ends: 17867 [2024-11-14 02:44:41,867 INFO L226 Difference]: Without dead ends: 14786 [2024-11-14 02:44:41,874 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 02:44:41,874 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 35 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 02:44:41,875 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 35 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 02:44:41,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14786 states. [2024-11-14 02:44:42,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14786 to 8717. [2024-11-14 02:44:42,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8717 states, 8714 states have (on average 4.105806747762221) internal successors, (35778), 8716 states have internal predecessors, (35778), 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) [2024-11-14 02:44:42,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8717 states to 8717 states and 35778 transitions. [2024-11-14 02:44:42,114 INFO L78 Accepts]: Start accepts. Automaton has 8717 states and 35778 transitions. Word has length 18 [2024-11-14 02:44:42,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:44:42,114 INFO L471 AbstractCegarLoop]: Abstraction has 8717 states and 35778 transitions. [2024-11-14 02:44:42,114 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2024-11-14 02:44:42,114 INFO L276 IsEmpty]: Start isEmpty. Operand 8717 states and 35778 transitions. [2024-11-14 02:44:42,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-14 02:44:42,131 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:44:42,131 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 1, 1] [2024-11-14 02:44:42,135 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Ended with exit code 0 [2024-11-14 02:44:42,331 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 02:44:42,332 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-14 02:44:42,332 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:44:42,332 INFO L85 PathProgramCache]: Analyzing trace with hash 595310110, now seen corresponding path program 3 times [2024-11-14 02:44:42,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 02:44:42,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2077868060] [2024-11-14 02:44:42,332 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 02:44:42,332 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 02:44:42,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 02:44:42,334 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 02:44:42,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2024-11-14 02:44:42,483 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-14 02:44:42,483 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 02:44:42,487 INFO L255 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-14 02:44:42,488 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:44:42,498 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-11-14 02:44:43,163 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:44:43,163 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 02:44:45,781 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:44:45,781 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 02:44:45,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2077868060] [2024-11-14 02:44:45,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2077868060] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 02:44:45,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2130963605] [2024-11-14 02:44:45,781 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 02:44:45,781 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 02:44:45,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 02:44:45,783 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 02:44:45,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2024-11-14 02:44:46,071 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-14 02:44:46,071 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 02:44:46,077 INFO L255 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-14 02:44:46,079 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:44:46,089 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-11-14 02:44:46,515 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:44:46,516 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 02:44:47,146 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:44:47,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2130963605] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 02:44:47,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1624841168] [2024-11-14 02:44:47,146 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 02:44:47,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:44:47,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 02:44:47,148 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 02:44:47,149 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-14 02:44:47,496 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-14 02:44:47,496 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 02:44:47,501 INFO L255 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-14 02:44:47,503 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:44:47,512 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-11-14 02:44:47,801 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:44:47,801 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 02:44:48,492 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:44:48,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1624841168] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 02:44:48,492 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-14 02:44:48,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12, 12, 12, 12] total 24 [2024-11-14 02:44:48,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053861803] [2024-11-14 02:44:48,492 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-14 02:44:48,493 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-14 02:44:48,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 02:44:48,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-14 02:44:48,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=477, Unknown=0, NotChecked=0, Total=650 [2024-11-14 02:44:48,494 INFO L87 Difference]: Start difference. First operand 8717 states and 35778 transitions. Second operand has 26 states, 25 states have (on average 1.84) internal successors, (46), 25 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) [2024-11-14 02:45:00,790 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 02:45:02,535 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 02:45:05,866 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 02:45:07,474 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 02:45:09,476 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 02:45:10,881 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 02:45:12,465 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 02:45:14,220 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 02:45:21,141 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 02:45:22,795 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 02:45:25,473 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 02:45:27,269 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 02:45:29,015 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 02:45:30,213 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 02:45:32,214 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 02:45:36,554 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 02:45:37,953 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 02:45:39,495 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 02:45:41,207 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 02:45:44,861 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 02:45:46,262 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 02:45:47,611 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 02:45:48,815 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 02:45:51,864 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 02:45:54,559 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 02:45:57,621 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 02:45:58,877 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 02:46:00,054 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 02:46:02,728 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 02:46:03,921 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 02:46:05,137 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 02:46:08,016 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 02:46:09,723 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 02:46:12,150 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 02:46:12,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:46:12,919 INFO L93 Difference]: Finished difference Result 8795 states and 35922 transitions. [2024-11-14 02:46:12,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2024-11-14 02:46:12,920 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 1.84) internal successors, (46), 25 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 23 [2024-11-14 02:46:12,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:46:12,964 INFO L225 Difference]: With dead ends: 8795 [2024-11-14 02:46:12,964 INFO L226 Difference]: Without dead ends: 8793 [2024-11-14 02:46:12,966 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1102 ImplicationChecksByTransitivity, 24.9s TimeCoverageRelationStatistics Valid=1360, Invalid=3062, Unknown=0, NotChecked=0, Total=4422 [2024-11-14 02:46:12,967 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 148 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 1282 mSolverCounterSat, 398 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 61.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 1684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 398 IncrementalHoareTripleChecker+Valid, 1282 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 61.8s IncrementalHoareTripleChecker+Time [2024-11-14 02:46:12,967 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 222 Invalid, 1684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [398 Valid, 1282 Invalid, 4 Unknown, 0 Unchecked, 61.8s Time] [2024-11-14 02:46:12,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8793 states. [2024-11-14 02:46:13,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8793 to 8789. [2024-11-14 02:46:13,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8789 states, 8786 states have (on average 4.085363077623492) internal successors, (35894), 8788 states have internal predecessors, (35894), 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) [2024-11-14 02:46:13,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8789 states to 8789 states and 35894 transitions. [2024-11-14 02:46:13,194 INFO L78 Accepts]: Start accepts. Automaton has 8789 states and 35894 transitions. Word has length 23 [2024-11-14 02:46:13,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:46:13,194 INFO L471 AbstractCegarLoop]: Abstraction has 8789 states and 35894 transitions. [2024-11-14 02:46:13,194 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 1.84) internal successors, (46), 25 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) [2024-11-14 02:46:13,194 INFO L276 IsEmpty]: Start isEmpty. Operand 8789 states and 35894 transitions. [2024-11-14 02:46:13,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-14 02:46:13,218 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:46:13,218 INFO L215 NwaCegarLoop]: trace 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, 1, 1, 1] [2024-11-14 02:46:13,222 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Ended with exit code 0 [2024-11-14 02:46:13,434 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-14 02:46:13,622 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (23)] Ended with exit code 0 [2024-11-14 02:46:13,819 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt [2024-11-14 02:46:13,820 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-14 02:46:13,820 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:46:13,820 INFO L85 PathProgramCache]: Analyzing trace with hash -230698744, now seen corresponding path program 1 times [2024-11-14 02:46:13,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 02:46:13,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1552001265] [2024-11-14 02:46:13,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:46:13,821 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 02:46:13,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 02:46:13,822 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 02:46:13,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2024-11-14 02:46:13,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:46:13,912 INFO L255 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-14 02:46:13,913 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:46:13,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:46:13,975 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 02:46:13,975 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 02:46:13,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1552001265] [2024-11-14 02:46:13,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1552001265] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:46:13,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:46:13,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 02:46:13,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712083935] [2024-11-14 02:46:13,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:46:13,976 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 02:46:13,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 02:46:13,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 02:46:13,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 02:46:13,976 INFO L87 Difference]: Start difference. First operand 8789 states and 35894 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 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) [2024-11-14 02:46:14,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:46:14,200 INFO L93 Difference]: Finished difference Result 12874 states and 53265 transitions. [2024-11-14 02:46:14,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 02:46:14,201 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 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 29 [2024-11-14 02:46:14,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:46:14,260 INFO L225 Difference]: With dead ends: 12874 [2024-11-14 02:46:14,260 INFO L226 Difference]: Without dead ends: 11578 [2024-11-14 02:46:14,265 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 02:46:14,266 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 16 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 02:46:14,266 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 36 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 02:46:14,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11578 states. [2024-11-14 02:46:14,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11578 to 10007. [2024-11-14 02:46:14,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10007 states, 10004 states have (on average 4.1595361855257895) internal successors, (41612), 10006 states have internal predecessors, (41612), 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) [2024-11-14 02:46:14,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10007 states to 10007 states and 41612 transitions. [2024-11-14 02:46:14,543 INFO L78 Accepts]: Start accepts. Automaton has 10007 states and 41612 transitions. Word has length 29 [2024-11-14 02:46:14,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:46:14,543 INFO L471 AbstractCegarLoop]: Abstraction has 10007 states and 41612 transitions. [2024-11-14 02:46:14,543 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 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) [2024-11-14 02:46:14,544 INFO L276 IsEmpty]: Start isEmpty. Operand 10007 states and 41612 transitions. [2024-11-14 02:46:14,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-14 02:46:14,564 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:46:14,565 INFO L215 NwaCegarLoop]: trace histogram [15, 14, 1, 1, 1] [2024-11-14 02:46:14,567 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Ended with exit code 0 [2024-11-14 02:46:14,765 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 02:46:14,765 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-14 02:46:14,765 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:46:14,765 INFO L85 PathProgramCache]: Analyzing trace with hash 1966399881, now seen corresponding path program 1 times [2024-11-14 02:46:14,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 02:46:14,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1440548359] [2024-11-14 02:46:14,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:46:14,766 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 02:46:14,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 02:46:14,768 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 02:46:14,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2024-11-14 02:46:14,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:46:14,890 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-14 02:46:14,892 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:46:14,906 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-11-14 02:46:15,997 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:46:15,997 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 02:46:20,876 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:46:20,876 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 02:46:20,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1440548359] [2024-11-14 02:46:20,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1440548359] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 02:46:20,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [812281963] [2024-11-14 02:46:20,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:46:20,877 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 02:46:20,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 02:46:20,878 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 02:46:20,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (27)] Waiting until timeout for monitored process [2024-11-14 02:46:21,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:46:21,133 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-14 02:46:21,134 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:46:21,141 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-11-14 02:46:22,210 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:46:22,210 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 02:46:23,775 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:46:23,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [812281963] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 02:46:23,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1577503650] [2024-11-14 02:46:23,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:46:23,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:46:23,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 02:46:23,777 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 02:46:23,778 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-14 02:46:23,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:46:23,911 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-14 02:46:23,912 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:46:23,921 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-11-14 02:46:24,457 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:46:24,457 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 02:46:25,709 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 02:46:25,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1577503650] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 02:46:25,709 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-14 02:46:25,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 18, 18, 17, 17] total 42 [2024-11-14 02:46:25,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718174795] [2024-11-14 02:46:25,709 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-14 02:46:25,710 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-14 02:46:25,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 02:46:25,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-14 02:46:25,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=464, Invalid=1342, Unknown=0, NotChecked=0, Total=1806 [2024-11-14 02:46:25,711 INFO L87 Difference]: Start difference. First operand 10007 states and 41612 transitions. Second operand has 43 states, 42 states have (on average 1.9285714285714286) internal successors, (81), 43 states have internal predecessors, (81), 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) [2024-11-14 02:46:43,576 WARN L286 SmtUtils]: Spent 5.45s on a formula simplification. DAG size of input: 164 DAG size of output: 163 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 02:46:45,734 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 02:46:47,736 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 02:46:49,630 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 02:46:51,633 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 02:46:53,635 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 02:46:55,264 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 02:46:57,176 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.91s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 02:46:59,230 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 02:47:01,232 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 02:47:03,235 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 02:47:06,072 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 02:47:08,074 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 02:47:10,076 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 02:47:15,729 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 02:47:17,392 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 02:48:07,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:48:07,583 INFO L93 Difference]: Finished difference Result 10040 states and 41676 transitions. [2024-11-14 02:48:07,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2024-11-14 02:48:07,584 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 42 states have (on average 1.9285714285714286) internal successors, (81), 43 states have internal predecessors, (81), 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 32 [2024-11-14 02:48:07,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:48:07,630 INFO L225 Difference]: With dead ends: 10040 [2024-11-14 02:48:07,631 INFO L226 Difference]: Without dead ends: 10039 [2024-11-14 02:48:07,633 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2136 ImplicationChecksByTransitivity, 66.6s TimeCoverageRelationStatistics Valid=2346, Invalid=5664, Unknown=0, NotChecked=0, Total=8010 [2024-11-14 02:48:07,634 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 184 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 2336 mSolverCounterSat, 206 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 2552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 2336 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40.3s IncrementalHoareTripleChecker+Time [2024-11-14 02:48:07,634 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 291 Invalid, 2552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 2336 Invalid, 10 Unknown, 0 Unchecked, 40.3s Time] [2024-11-14 02:48:07,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10039 states. [2024-11-14 02:48:07,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10039 to 10039. [2024-11-14 02:48:07,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10039 states, 10036 states have (on average 4.150259067357513) internal successors, (41652), 10038 states have internal predecessors, (41652), 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) [2024-11-14 02:48:07,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10039 states to 10039 states and 41652 transitions. [2024-11-14 02:48:07,817 INFO L78 Accepts]: Start accepts. Automaton has 10039 states and 41652 transitions. Word has length 32 [2024-11-14 02:48:07,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:48:07,817 INFO L471 AbstractCegarLoop]: Abstraction has 10039 states and 41652 transitions. [2024-11-14 02:48:07,817 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 42 states have (on average 1.9285714285714286) internal successors, (81), 43 states have internal predecessors, (81), 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) [2024-11-14 02:48:07,817 INFO L276 IsEmpty]: Start isEmpty. Operand 10039 states and 41652 transitions. [2024-11-14 02:48:07,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-14 02:48:07,835 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:48:07,835 INFO L215 NwaCegarLoop]: trace 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:48:07,855 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-11-14 02:48:08,038 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Ended with exit code 0 [2024-11-14 02:48:08,238 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (27)] Ended with exit code 0 [2024-11-14 02:48:08,435 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt [2024-11-14 02:48:08,436 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-14 02:48:08,436 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:48:08,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1836952511, now seen corresponding path program 1 times [2024-11-14 02:48:08,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 02:48:08,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1465180824] [2024-11-14 02:48:08,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:48:08,436 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 02:48:08,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 02:48:08,441 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 02:48:08,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2024-11-14 02:48:08,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:48:08,554 INFO L255 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-14 02:48:08,555 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:48:08,746 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 02:48:08,747 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 02:48:08,747 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 02:48:08,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1465180824] [2024-11-14 02:48:08,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1465180824] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:48:08,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:48:08,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 02:48:08,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798117635] [2024-11-14 02:48:08,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:48:08,747 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 02:48:08,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 02:48:08,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 02:48:08,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-14 02:48:08,748 INFO L87 Difference]: Start difference. First operand 10039 states and 41652 transitions. Second operand has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 5 states have internal predecessors, (34), 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) [2024-11-14 02:48:09,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:48:09,937 INFO L93 Difference]: Finished difference Result 17387 states and 72817 transitions. [2024-11-14 02:48:09,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-14 02:48:09,937 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 5 states have internal predecessors, (34), 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 34 [2024-11-14 02:48:09,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:48:09,998 INFO L225 Difference]: With dead ends: 17387 [2024-11-14 02:48:09,998 INFO L226 Difference]: Without dead ends: 12779 [2024-11-14 02:48:10,007 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2024-11-14 02:48:10,008 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 141 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-14 02:48:10,008 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 131 Invalid, 344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 341 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-14 02:48:10,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12779 states. [2024-11-14 02:48:10,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12779 to 11409. [2024-11-14 02:48:10,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11409 states, 11406 states have (on average 4.167981763983868) internal successors, (47540), 11408 states have internal predecessors, (47540), 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) [2024-11-14 02:48:10,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11409 states to 11409 states and 47540 transitions. [2024-11-14 02:48:10,292 INFO L78 Accepts]: Start accepts. Automaton has 11409 states and 47540 transitions. Word has length 34 [2024-11-14 02:48:10,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:48:10,293 INFO L471 AbstractCegarLoop]: Abstraction has 11409 states and 47540 transitions. [2024-11-14 02:48:10,293 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 5 states have internal predecessors, (34), 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) [2024-11-14 02:48:10,293 INFO L276 IsEmpty]: Start isEmpty. Operand 11409 states and 47540 transitions. [2024-11-14 02:48:10,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-14 02:48:10,323 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:48:10,323 INFO L215 NwaCegarLoop]: trace 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:48:10,326 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Ended with exit code 0 [2024-11-14 02:48:10,523 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 02:48:10,523 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-14 02:48:10,524 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:48:10,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1651483373, now seen corresponding path program 1 times [2024-11-14 02:48:10,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 02:48:10,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1060380320] [2024-11-14 02:48:10,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:48:10,524 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 02:48:10,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 02:48:10,526 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 02:48:10,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2024-11-14 02:48:10,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:48:10,647 INFO L255 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-14 02:48:10,648 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:48:10,721 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 02:48:10,722 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 02:48:10,722 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 02:48:10,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1060380320] [2024-11-14 02:48:10,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1060380320] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:48:10,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:48:10,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 02:48:10,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113382102] [2024-11-14 02:48:10,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:48:10,722 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 02:48:10,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 02:48:10,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 02:48:10,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 02:48:10,723 INFO L87 Difference]: Start difference. First operand 11409 states and 47540 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 2 states have internal predecessors, (34), 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) [2024-11-14 02:48:11,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:48:11,029 INFO L93 Difference]: Finished difference Result 18622 states and 78639 transitions. [2024-11-14 02:48:11,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 02:48:11,029 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 2 states have internal predecessors, (34), 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 34 [2024-11-14 02:48:11,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:48:11,116 INFO L225 Difference]: With dead ends: 18622 [2024-11-14 02:48:11,116 INFO L226 Difference]: Without dead ends: 14211 [2024-11-14 02:48:11,127 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 02:48:11,128 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 20 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 02:48:11,128 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 31 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 02:48:11,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14211 states. [2024-11-14 02:48:11,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14211 to 13227. [2024-11-14 02:48:11,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13227 states, 13224 states have (on average 4.182320024198427) internal successors, (55307), 13226 states have internal predecessors, (55307), 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) [2024-11-14 02:48:11,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13227 states to 13227 states and 55307 transitions. [2024-11-14 02:48:11,546 INFO L78 Accepts]: Start accepts. Automaton has 13227 states and 55307 transitions. Word has length 34 [2024-11-14 02:48:11,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:48:11,546 INFO L471 AbstractCegarLoop]: Abstraction has 13227 states and 55307 transitions. [2024-11-14 02:48:11,547 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 2 states have internal predecessors, (34), 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) [2024-11-14 02:48:11,547 INFO L276 IsEmpty]: Start isEmpty. Operand 13227 states and 55307 transitions. [2024-11-14 02:48:11,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-14 02:48:11,583 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:48:11,583 INFO L215 NwaCegarLoop]: trace 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:48:11,586 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Ended with exit code 0 [2024-11-14 02:48:11,783 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 02:48:11,783 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-14 02:48:11,784 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:48:11,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1090427364, now seen corresponding path program 1 times [2024-11-14 02:48:11,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 02:48:11,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [6845316] [2024-11-14 02:48:11,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:48:11,784 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 02:48:11,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 02:48:11,786 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 02:48:11,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2024-11-14 02:48:11,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:48:11,926 INFO L255 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-14 02:48:11,928 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:48:12,431 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 02:48:12,431 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 02:48:12,973 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 02:48:12,973 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 02:48:12,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [6845316] [2024-11-14 02:48:12,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [6845316] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 02:48:12,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [883041776] [2024-11-14 02:48:12,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:48:12,973 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 02:48:12,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 02:48:12,975 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 02:48:12,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (32)] Waiting until timeout for monitored process [2024-11-14 02:48:13,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:48:13,222 INFO L255 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-14 02:48:13,224 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:48:13,494 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 02:48:13,494 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 02:48:13,722 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 02:48:13,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [883041776] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 02:48:13,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1781636724] [2024-11-14 02:48:13,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 02:48:13,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 02:48:13,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 02:48:13,725 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 02:48:13,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-14 02:48:13,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 02:48:13,853 INFO L255 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-14 02:48:13,854 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:48:14,503 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 02:48:14,503 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 02:48:14,967 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 02:48:14,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1781636724] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 02:48:14,967 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-14 02:48:14,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 11, 9] total 31 [2024-11-14 02:48:14,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074989384] [2024-11-14 02:48:14,967 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-14 02:48:14,968 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-14 02:48:14,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 02:48:14,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-14 02:48:14,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=808, Unknown=0, NotChecked=0, Total=992 [2024-11-14 02:48:14,969 INFO L87 Difference]: Start difference. First operand 13227 states and 55307 transitions. Second operand has 32 states, 32 states have (on average 4.34375) internal successors, (139), 31 states have internal predecessors, (139), 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) [2024-11-14 02:48:44,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:48:44,868 INFO L93 Difference]: Finished difference Result 62879 states and 269007 transitions. [2024-11-14 02:48:44,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 267 states. [2024-11-14 02:48:44,869 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.34375) internal successors, (139), 31 states have internal predecessors, (139), 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 38 [2024-11-14 02:48:44,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:48:45,163 INFO L225 Difference]: With dead ends: 62879 [2024-11-14 02:48:45,163 INFO L226 Difference]: Without dead ends: 53655 [2024-11-14 02:48:45,210 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 477 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 285 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35413 ImplicationChecksByTransitivity, 17.5s TimeCoverageRelationStatistics Valid=13257, Invalid=68825, Unknown=0, NotChecked=0, Total=82082 [2024-11-14 02:48:45,211 INFO L432 NwaCegarLoop]: 105 mSDtfsCounter, 2743 mSDsluCounter, 1234 mSDsCounter, 0 mSdLazyCounter, 5982 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2743 SdHoareTripleChecker+Valid, 1339 SdHoareTripleChecker+Invalid, 6122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 5982 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.9s IncrementalHoareTripleChecker+Time [2024-11-14 02:48:45,211 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2743 Valid, 1339 Invalid, 6122 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [140 Valid, 5982 Invalid, 0 Unknown, 0 Unchecked, 11.9s Time] [2024-11-14 02:48:45,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53655 states. [2024-11-14 02:48:46,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53655 to 18925. [2024-11-14 02:48:46,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18925 states, 18922 states have (on average 4.326498255998309) internal successors, (81866), 18924 states have internal predecessors, (81866), 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) [2024-11-14 02:48:46,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18925 states to 18925 states and 81866 transitions. [2024-11-14 02:48:46,180 INFO L78 Accepts]: Start accepts. Automaton has 18925 states and 81866 transitions. Word has length 38 [2024-11-14 02:48:46,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:48:46,180 INFO L471 AbstractCegarLoop]: Abstraction has 18925 states and 81866 transitions. [2024-11-14 02:48:46,180 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.34375) internal successors, (139), 31 states have internal predecessors, (139), 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) [2024-11-14 02:48:46,180 INFO L276 IsEmpty]: Start isEmpty. Operand 18925 states and 81866 transitions. [2024-11-14 02:48:46,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-14 02:48:46,219 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:48:46,219 INFO L215 NwaCegarLoop]: trace 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:48:46,222 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2024-11-14 02:48:46,433 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2024-11-14 02:48:46,622 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (32)] Ended with exit code 0 [2024-11-14 02:48:46,820 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt [2024-11-14 02:48:46,820 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-14 02:48:46,820 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:48:46,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1589749026, now seen corresponding path program 2 times [2024-11-14 02:48:46,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 02:48:46,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1574530500] [2024-11-14 02:48:46,821 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-14 02:48:46,821 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 02:48:46,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 02:48:46,823 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 02:48:46,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2024-11-14 02:48:46,973 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-14 02:48:46,973 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 02:48:46,977 INFO L255 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-14 02:48:46,978 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:48:47,330 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 02:48:47,330 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 02:48:47,739 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 02:48:47,739 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 02:48:47,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1574530500] [2024-11-14 02:48:47,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1574530500] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-14 02:48:47,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 02:48:47,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 11 [2024-11-14 02:48:47,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194517184] [2024-11-14 02:48:47,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:48:47,739 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-14 02:48:47,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 02:48:47,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-14 02:48:47,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-11-14 02:48:47,740 INFO L87 Difference]: Start difference. First operand 18925 states and 81866 transitions. Second operand has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 6 states have internal predecessors, (38), 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) [2024-11-14 02:48:49,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:48:49,016 INFO L93 Difference]: Finished difference Result 21628 states and 92306 transitions. [2024-11-14 02:48:49,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-14 02:48:49,016 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 6 states have internal predecessors, (38), 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 38 [2024-11-14 02:48:49,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:48:49,144 INFO L225 Difference]: With dead ends: 21628 [2024-11-14 02:48:49,144 INFO L226 Difference]: Without dead ends: 21363 [2024-11-14 02:48:49,151 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2024-11-14 02:48:49,152 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 171 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-14 02:48:49,152 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 87 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-14 02:48:49,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21363 states. [2024-11-14 02:48:49,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21363 to 19095. [2024-11-14 02:48:49,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19095 states, 19092 states have (on average 4.328724072910119) internal successors, (82644), 19094 states have internal predecessors, (82644), 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) [2024-11-14 02:48:49,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19095 states to 19095 states and 82644 transitions. [2024-11-14 02:48:49,794 INFO L78 Accepts]: Start accepts. Automaton has 19095 states and 82644 transitions. Word has length 38 [2024-11-14 02:48:49,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:48:49,794 INFO L471 AbstractCegarLoop]: Abstraction has 19095 states and 82644 transitions. [2024-11-14 02:48:49,795 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 6 states have internal predecessors, (38), 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) [2024-11-14 02:48:49,795 INFO L276 IsEmpty]: Start isEmpty. Operand 19095 states and 82644 transitions. [2024-11-14 02:48:49,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-14 02:48:49,845 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:48:49,845 INFO L215 NwaCegarLoop]: trace 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:48:49,848 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2024-11-14 02:48:50,046 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 02:48:50,046 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-14 02:48:50,046 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:48:50,046 INFO L85 PathProgramCache]: Analyzing trace with hash 372392068, now seen corresponding path program 3 times [2024-11-14 02:48:50,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 02:48:50,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [778582348] [2024-11-14 02:48:50,047 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 02:48:50,047 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 02:48:50,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 02:48:50,051 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 02:48:50,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2024-11-14 02:48:50,187 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-14 02:48:50,188 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 02:48:50,192 INFO L255 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-14 02:48:50,194 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:48:50,721 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 02:48:50,722 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 02:48:50,722 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 02:48:50,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [778582348] [2024-11-14 02:48:50,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [778582348] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:48:50,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:48:50,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-14 02:48:50,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377352988] [2024-11-14 02:48:50,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:48:50,722 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-14 02:48:50,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 02:48:50,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-14 02:48:50,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-14 02:48:50,723 INFO L87 Difference]: Start difference. First operand 19095 states and 82644 transitions. Second operand has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 6 states have internal predecessors, (38), 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) [2024-11-14 02:48:52,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:48:52,197 INFO L93 Difference]: Finished difference Result 24572 states and 103631 transitions. [2024-11-14 02:48:52,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-14 02:48:52,197 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 6 states have internal predecessors, (38), 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 38 [2024-11-14 02:48:52,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:48:52,401 INFO L225 Difference]: With dead ends: 24572 [2024-11-14 02:48:52,401 INFO L226 Difference]: Without dead ends: 22966 [2024-11-14 02:48:52,414 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2024-11-14 02:48:52,414 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 197 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-14 02:48:52,415 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 131 Invalid, 442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 436 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-14 02:48:52,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22966 states. [2024-11-14 02:48:52,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22966 to 19213. [2024-11-14 02:48:52,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19213 states, 19210 states have (on average 4.329984383133785) internal successors, (83179), 19212 states have internal predecessors, (83179), 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) [2024-11-14 02:48:53,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19213 states to 19213 states and 83179 transitions. [2024-11-14 02:48:53,118 INFO L78 Accepts]: Start accepts. Automaton has 19213 states and 83179 transitions. Word has length 38 [2024-11-14 02:48:53,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 02:48:53,118 INFO L471 AbstractCegarLoop]: Abstraction has 19213 states and 83179 transitions. [2024-11-14 02:48:53,118 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 6 states have internal predecessors, (38), 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) [2024-11-14 02:48:53,118 INFO L276 IsEmpty]: Start isEmpty. Operand 19213 states and 83179 transitions. [2024-11-14 02:48:53,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-14 02:48:53,377 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 02:48:53,377 INFO L215 NwaCegarLoop]: trace 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 02:48:53,381 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Ended with exit code 0 [2024-11-14 02:48:53,577 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 02:48:53,577 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-11-14 02:48:53,580 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 02:48:53,580 INFO L85 PathProgramCache]: Analyzing trace with hash -591802022, now seen corresponding path program 4 times [2024-11-14 02:48:53,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 02:48:53,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2117215690] [2024-11-14 02:48:53,580 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-14 02:48:53,580 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 02:48:53,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 02:48:53,582 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 02:48:53,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dddaddd3-666b-44f3-a5b4-62d1d08115c1/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2024-11-14 02:48:53,743 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-14 02:48:53,744 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 02:48:53,750 INFO L255 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-14 02:48:53,752 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 02:48:54,122 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 02:48:54,122 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 02:48:54,122 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 02:48:54,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2117215690] [2024-11-14 02:48:54,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2117215690] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 02:48:54,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 02:48:54,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 02:48:54,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455977932] [2024-11-14 02:48:54,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 02:48:54,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 02:48:54,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 02:48:54,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 02:48:54,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-14 02:48:54,123 INFO L87 Difference]: Start difference. First operand 19213 states and 83179 transitions. Second operand has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 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) [2024-11-14 02:48:55,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 02:48:55,210 INFO L93 Difference]: Finished difference Result 26351 states and 114599 transitions. [2024-11-14 02:48:55,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-14 02:48:55,211 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 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 38 [2024-11-14 02:48:55,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 02:48:55,334 INFO L225 Difference]: With dead ends: 26351 [2024-11-14 02:48:55,335 INFO L226 Difference]: Without dead ends: 24470 [2024-11-14 02:48:55,345 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2024-11-14 02:48:55,346 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 170 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-14 02:48:55,346 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 97 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 348 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-14 02:48:55,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24470 states.