./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_489de73a-193c-4ab5-b49c-e0d080362b74/bin/utaipan-verify-FOvIYxoinp/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_489de73a-193c-4ab5-b49c-e0d080362b74/bin/utaipan-verify-FOvIYxoinp/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_489de73a-193c-4ab5-b49c-e0d080362b74/bin/utaipan-verify-FOvIYxoinp/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_489de73a-193c-4ab5-b49c-e0d080362b74/bin/utaipan-verify-FOvIYxoinp/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_489de73a-193c-4ab5-b49c-e0d080362b74/bin/utaipan-verify-FOvIYxoinp/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_489de73a-193c-4ab5-b49c-e0d080362b74/bin/utaipan-verify-FOvIYxoinp --witnessprinter.witness.filename witness.graphml --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 55711f117aca8cc6da45707674eed41f8615ce4fb09ace088988b9afc0dc0851 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 20:28:12,657 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 20:28:12,738 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_489de73a-193c-4ab5-b49c-e0d080362b74/bin/utaipan-verify-FOvIYxoinp/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-11-06 20:28:12,744 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 20:28:12,745 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 20:28:12,772 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 20:28:12,773 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 20:28:12,774 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 20:28:12,774 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 20:28:12,775 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 20:28:12,776 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-06 20:28:12,776 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-06 20:28:12,777 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-06 20:28:12,778 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-06 20:28:12,778 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-06 20:28:12,779 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-06 20:28:12,779 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-06 20:28:12,780 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-06 20:28:12,781 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-06 20:28:12,781 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-06 20:28:12,782 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-06 20:28:12,787 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-06 20:28:12,788 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 20:28:12,788 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 20:28:12,791 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 20:28:12,791 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 20:28:12,791 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 20:28:12,792 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 20:28:12,792 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 20:28:12,793 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 20:28:12,794 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 20:28:12,795 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 20:28:12,796 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 20:28:12,796 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 20:28:12,796 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 20:28:12,797 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 20:28:12,797 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 20:28:12,797 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 20:28:12,798 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 20:28:12,798 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 20:28:12,798 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 20:28:12,799 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 20:28:12,799 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-06 20:28:12,799 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 20:28:12,800 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-06 20:28:12,800 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 20:28:12,800 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_489de73a-193c-4ab5-b49c-e0d080362b74/bin/utaipan-verify-FOvIYxoinp/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_489de73a-193c-4ab5-b49c-e0d080362b74/bin/utaipan-verify-FOvIYxoinp Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 55711f117aca8cc6da45707674eed41f8615ce4fb09ace088988b9afc0dc0851 [2023-11-06 20:28:13,057 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 20:28:13,079 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 20:28:13,081 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 20:28:13,083 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 20:28:13,083 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 20:28:13,085 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_489de73a-193c-4ab5-b49c-e0d080362b74/bin/utaipan-verify-FOvIYxoinp/../../sv-benchmarks/c/pthread-wmm/safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-11-06 20:28:16,379 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 20:28:16,657 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 20:28:16,659 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_489de73a-193c-4ab5-b49c-e0d080362b74/sv-benchmarks/c/pthread-wmm/safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-11-06 20:28:16,692 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_489de73a-193c-4ab5-b49c-e0d080362b74/bin/utaipan-verify-FOvIYxoinp/data/e2440c492/e55ce724cb294bb38942c05a0d895cd7/FLAG43316cd94 [2023-11-06 20:28:16,708 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_489de73a-193c-4ab5-b49c-e0d080362b74/bin/utaipan-verify-FOvIYxoinp/data/e2440c492/e55ce724cb294bb38942c05a0d895cd7 [2023-11-06 20:28:16,711 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 20:28:16,712 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 20:28:16,714 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 20:28:16,714 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 20:28:16,720 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 20:28:16,721 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:28:16" (1/1) ... [2023-11-06 20:28:16,722 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61560dbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:28:16, skipping insertion in model container [2023-11-06 20:28:16,722 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:28:16" (1/1) ... [2023-11-06 20:28:16,775 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 20:28:17,260 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 20:28:17,273 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 20:28:17,336 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 20:28:17,378 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 20:28:17,378 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 20:28:17,387 INFO L206 MainTranslator]: Completed translation [2023-11-06 20:28:17,387 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:28:17 WrapperNode [2023-11-06 20:28:17,388 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 20:28:17,389 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 20:28:17,389 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 20:28:17,390 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 20:28:17,398 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:28:17" (1/1) ... [2023-11-06 20:28:17,443 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:28:17" (1/1) ... [2023-11-06 20:28:17,467 INFO L138 Inliner]: procedures = 177, calls = 63, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 83 [2023-11-06 20:28:17,469 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 20:28:17,470 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 20:28:17,470 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 20:28:17,470 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 20:28:17,480 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:28:17" (1/1) ... [2023-11-06 20:28:17,480 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:28:17" (1/1) ... [2023-11-06 20:28:17,491 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:28:17" (1/1) ... [2023-11-06 20:28:17,491 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:28:17" (1/1) ... [2023-11-06 20:28:17,499 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:28:17" (1/1) ... [2023-11-06 20:28:17,501 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:28:17" (1/1) ... [2023-11-06 20:28:17,508 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:28:17" (1/1) ... [2023-11-06 20:28:17,518 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:28:17" (1/1) ... [2023-11-06 20:28:17,522 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 20:28:17,523 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 20:28:17,523 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 20:28:17,523 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 20:28:17,524 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:28:17" (1/1) ... [2023-11-06 20:28:17,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 20:28:17,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_489de73a-193c-4ab5-b49c-e0d080362b74/bin/utaipan-verify-FOvIYxoinp/z3 [2023-11-06 20:28:17,565 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_489de73a-193c-4ab5-b49c-e0d080362b74/bin/utaipan-verify-FOvIYxoinp/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 20:28:17,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_489de73a-193c-4ab5-b49c-e0d080362b74/bin/utaipan-verify-FOvIYxoinp/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 20:28:17,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 20:28:17,614 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-06 20:28:17,614 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 20:28:17,614 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 20:28:17,614 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 20:28:17,614 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-06 20:28:17,614 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-06 20:28:17,615 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-06 20:28:17,615 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-06 20:28:17,615 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-06 20:28:17,615 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-06 20:28:17,615 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-11-06 20:28:17,616 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-11-06 20:28:17,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 20:28:17,616 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-06 20:28:17,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 20:28:17,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 20:28:17,618 WARN L210 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 20:28:17,763 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 20:28:17,764 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 20:28:18,032 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 20:28:18,040 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 20:28:18,040 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-06 20:28:18,043 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:28:18 BoogieIcfgContainer [2023-11-06 20:28:18,045 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 20:28:18,069 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 20:28:18,069 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 20:28:18,072 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 20:28:18,073 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 08:28:16" (1/3) ... [2023-11-06 20:28:18,073 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@653bf165 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:28:18, skipping insertion in model container [2023-11-06 20:28:18,074 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:28:17" (2/3) ... [2023-11-06 20:28:18,074 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@653bf165 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:28:18, skipping insertion in model container [2023-11-06 20:28:18,074 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:28:18" (3/3) ... [2023-11-06 20:28:18,076 INFO L112 eAbstractionObserver]: Analyzing ICFG safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-11-06 20:28:18,121 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 20:28:18,122 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-11-06 20:28:18,122 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 20:28:18,239 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 20:28:18,294 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-06 20:28:18,313 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 128 places, 118 transitions, 252 flow [2023-11-06 20:28:18,317 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 128 places, 118 transitions, 252 flow [2023-11-06 20:28:18,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 128 places, 118 transitions, 252 flow [2023-11-06 20:28:18,383 INFO L124 PetriNetUnfolderBase]: 3/114 cut-off events. [2023-11-06 20:28:18,384 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 20:28:18,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127 conditions, 114 events. 3/114 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 97 event pairs, 0 based on Foata normal form. 0/101 useless extension candidates. Maximal degree in co-relation 97. Up to 2 conditions per place. [2023-11-06 20:28:18,406 INFO L119 LiptonReduction]: Number of co-enabled transitions 2822 [2023-11-06 20:28:22,638 INFO L134 LiptonReduction]: Checked pairs total: 5064 [2023-11-06 20:28:22,638 INFO L136 LiptonReduction]: Total number of compositions: 122 [2023-11-06 20:28:22,647 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 47 places, 34 transitions, 84 flow [2023-11-06 20:28:22,752 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 836 states, 826 states have (on average 3.414043583535109) internal successors, (2820), 835 states have internal predecessors, (2820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:28:22,773 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 20:28:22,780 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@3a4ceca3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-06 20:28:22,781 INFO L358 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2023-11-06 20:28:22,786 INFO L276 IsEmpty]: Start isEmpty. Operand has 836 states, 826 states have (on average 3.414043583535109) internal successors, (2820), 835 states have internal predecessors, (2820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:28:22,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2023-11-06 20:28:22,791 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:28:22,792 INFO L195 NwaCegarLoop]: trace histogram [1] [2023-11-06 20:28:22,792 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2023-11-06 20:28:22,798 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:28:22,798 INFO L85 PathProgramCache]: Analyzing trace with hash 419, now seen corresponding path program 1 times [2023-11-06 20:28:22,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 20:28:22,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366015082] [2023-11-06 20:28:22,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:28:22,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 20:28:22,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:28:22,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 20:28:22,935 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 20:28:22,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366015082] [2023-11-06 20:28:22,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366015082] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 20:28:22,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 20:28:22,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-06 20:28:22,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215272376] [2023-11-06 20:28:22,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:28:22,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 20:28:22,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 20:28:22,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 20:28:22,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 20:28:22,984 INFO L87 Difference]: Start difference. First operand has 836 states, 826 states have (on average 3.414043583535109) internal successors, (2820), 835 states have internal predecessors, (2820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:28:23,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:28:23,093 INFO L93 Difference]: Finished difference Result 706 states and 2442 transitions. [2023-11-06 20:28:23,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 20:28:23,096 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 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 1 [2023-11-06 20:28:23,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:28:23,129 INFO L225 Difference]: With dead ends: 706 [2023-11-06 20:28:23,130 INFO L226 Difference]: Without dead ends: 706 [2023-11-06 20:28:23,132 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 20:28:23,137 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 20:28:23,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 20:28:23,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2023-11-06 20:28:23,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 706. [2023-11-06 20:28:23,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 706 states, 704 states have (on average 3.46875) internal successors, (2442), 705 states have internal predecessors, (2442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:28:23,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 2442 transitions. [2023-11-06 20:28:23,263 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 2442 transitions. Word has length 1 [2023-11-06 20:28:23,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:28:23,263 INFO L495 AbstractCegarLoop]: Abstraction has 706 states and 2442 transitions. [2023-11-06 20:28:23,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:28:23,264 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 2442 transitions. [2023-11-06 20:28:23,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-06 20:28:23,266 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:28:23,266 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 20:28:23,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 20:28:23,267 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2023-11-06 20:28:23,267 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:28:23,267 INFO L85 PathProgramCache]: Analyzing trace with hash -2110932373, now seen corresponding path program 1 times [2023-11-06 20:28:23,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 20:28:23,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751908458] [2023-11-06 20:28:23,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:28:23,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 20:28:23,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:28:24,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 20:28:24,436 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 20:28:24,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751908458] [2023-11-06 20:28:24,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751908458] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 20:28:24,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 20:28:24,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 20:28:24,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473138070] [2023-11-06 20:28:24,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:28:24,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 20:28:24,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 20:28:24,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 20:28:24,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-06 20:28:24,442 INFO L87 Difference]: Start difference. First operand 706 states and 2442 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:28:24,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:28:24,602 INFO L93 Difference]: Finished difference Result 562 states and 1890 transitions. [2023-11-06 20:28:24,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 20:28:24,603 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-11-06 20:28:24,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:28:24,610 INFO L225 Difference]: With dead ends: 562 [2023-11-06 20:28:24,610 INFO L226 Difference]: Without dead ends: 562 [2023-11-06 20:28:24,610 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-06 20:28:24,612 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 27 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 20:28:24,613 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 24 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 20:28:24,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2023-11-06 20:28:24,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 562. [2023-11-06 20:28:24,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 561 states have (on average 3.3689839572192515) internal successors, (1890), 561 states have internal predecessors, (1890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:28:24,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 1890 transitions. [2023-11-06 20:28:24,639 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 1890 transitions. Word has length 10 [2023-11-06 20:28:24,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:28:24,640 INFO L495 AbstractCegarLoop]: Abstraction has 562 states and 1890 transitions. [2023-11-06 20:28:24,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:28:24,641 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 1890 transitions. [2023-11-06 20:28:24,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-06 20:28:24,643 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:28:24,643 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 20:28:24,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 20:28:24,644 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2023-11-06 20:28:24,644 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:28:24,644 INFO L85 PathProgramCache]: Analyzing trace with hash -2110932385, now seen corresponding path program 1 times [2023-11-06 20:28:24,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 20:28:24,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120920876] [2023-11-06 20:28:24,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:28:24,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 20:28:24,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:28:24,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 20:28:24,836 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 20:28:24,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120920876] [2023-11-06 20:28:24,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120920876] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 20:28:24,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 20:28:24,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 20:28:24,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107496507] [2023-11-06 20:28:24,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:28:24,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 20:28:24,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 20:28:24,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 20:28:24,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 20:28:24,851 INFO L87 Difference]: Start difference. First operand 562 states and 1890 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:28:24,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:28:24,923 INFO L93 Difference]: Finished difference Result 925 states and 2943 transitions. [2023-11-06 20:28:24,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 20:28:24,924 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-11-06 20:28:24,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:28:24,933 INFO L225 Difference]: With dead ends: 925 [2023-11-06 20:28:24,933 INFO L226 Difference]: Without dead ends: 861 [2023-11-06 20:28:24,934 INFO L412 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 [2023-11-06 20:28:24,938 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 4 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 20:28:24,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 4 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 20:28:24,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 861 states. [2023-11-06 20:28:24,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 861 to 761. [2023-11-06 20:28:24,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 761 states, 760 states have (on average 3.232894736842105) internal successors, (2457), 760 states have internal predecessors, (2457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:28:24,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 761 states to 761 states and 2457 transitions. [2023-11-06 20:28:24,981 INFO L78 Accepts]: Start accepts. Automaton has 761 states and 2457 transitions. Word has length 10 [2023-11-06 20:28:24,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:28:24,981 INFO L495 AbstractCegarLoop]: Abstraction has 761 states and 2457 transitions. [2023-11-06 20:28:24,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:28:24,982 INFO L276 IsEmpty]: Start isEmpty. Operand 761 states and 2457 transitions. [2023-11-06 20:28:24,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-06 20:28:24,984 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:28:24,984 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 20:28:24,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 20:28:24,985 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2023-11-06 20:28:24,985 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:28:24,985 INFO L85 PathProgramCache]: Analyzing trace with hash -329898052, now seen corresponding path program 1 times [2023-11-06 20:28:24,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 20:28:24,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366549009] [2023-11-06 20:28:24,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:28:24,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 20:28:25,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:28:25,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 20:28:25,133 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 20:28:25,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366549009] [2023-11-06 20:28:25,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366549009] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 20:28:25,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 20:28:25,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 20:28:25,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420997676] [2023-11-06 20:28:25,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:28:25,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 20:28:25,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 20:28:25,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 20:28:25,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 20:28:25,136 INFO L87 Difference]: Start difference. First operand 761 states and 2457 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:28:25,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:28:25,214 INFO L93 Difference]: Finished difference Result 816 states and 2551 transitions. [2023-11-06 20:28:25,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 20:28:25,214 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-11-06 20:28:25,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:28:25,223 INFO L225 Difference]: With dead ends: 816 [2023-11-06 20:28:25,224 INFO L226 Difference]: Without dead ends: 816 [2023-11-06 20:28:25,224 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 20:28:25,228 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 22 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 20:28:25,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 3 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 20:28:25,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 816 states. [2023-11-06 20:28:25,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 816 to 688. [2023-11-06 20:28:25,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 688 states, 687 states have (on average 3.2037845705967976) internal successors, (2201), 687 states have internal predecessors, (2201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:28:25,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 688 states to 688 states and 2201 transitions. [2023-11-06 20:28:25,265 INFO L78 Accepts]: Start accepts. Automaton has 688 states and 2201 transitions. Word has length 11 [2023-11-06 20:28:25,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:28:25,266 INFO L495 AbstractCegarLoop]: Abstraction has 688 states and 2201 transitions. [2023-11-06 20:28:25,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:28:25,266 INFO L276 IsEmpty]: Start isEmpty. Operand 688 states and 2201 transitions. [2023-11-06 20:28:25,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-06 20:28:25,271 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:28:25,271 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 20:28:25,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 20:28:25,272 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2023-11-06 20:28:25,273 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:28:25,273 INFO L85 PathProgramCache]: Analyzing trace with hash -1014397182, now seen corresponding path program 1 times [2023-11-06 20:28:25,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 20:28:25,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639364372] [2023-11-06 20:28:25,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:28:25,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 20:28:25,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:28:25,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 20:28:25,434 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 20:28:25,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639364372] [2023-11-06 20:28:25,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639364372] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 20:28:25,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 20:28:25,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 20:28:25,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052144210] [2023-11-06 20:28:25,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:28:25,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 20:28:25,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 20:28:25,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 20:28:25,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 20:28:25,436 INFO L87 Difference]: Start difference. First operand 688 states and 2201 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:28:25,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:28:25,514 INFO L93 Difference]: Finished difference Result 756 states and 2357 transitions. [2023-11-06 20:28:25,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 20:28:25,515 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-11-06 20:28:25,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:28:25,522 INFO L225 Difference]: With dead ends: 756 [2023-11-06 20:28:25,522 INFO L226 Difference]: Without dead ends: 756 [2023-11-06 20:28:25,523 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 20:28:25,524 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 20 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 20:28:25,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 7 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 20:28:25,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2023-11-06 20:28:25,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 640. [2023-11-06 20:28:25,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 640 states, 639 states have (on average 3.1784037558685445) internal successors, (2031), 639 states have internal predecessors, (2031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:28:25,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 2031 transitions. [2023-11-06 20:28:25,553 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 2031 transitions. Word has length 11 [2023-11-06 20:28:25,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:28:25,553 INFO L495 AbstractCegarLoop]: Abstraction has 640 states and 2031 transitions. [2023-11-06 20:28:25,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:28:25,554 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 2031 transitions. [2023-11-06 20:28:25,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-06 20:28:25,558 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:28:25,559 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 20:28:25,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 20:28:25,559 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2023-11-06 20:28:25,560 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:28:25,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1381543637, now seen corresponding path program 1 times [2023-11-06 20:28:25,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 20:28:25,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191449798] [2023-11-06 20:28:25,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:28:25,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 20:28:25,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:28:25,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 20:28:25,748 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 20:28:25,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191449798] [2023-11-06 20:28:25,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191449798] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 20:28:25,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 20:28:25,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 20:28:25,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237297245] [2023-11-06 20:28:25,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:28:25,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 20:28:25,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 20:28:25,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 20:28:25,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 20:28:25,752 INFO L87 Difference]: Start difference. First operand 640 states and 2031 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 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) [2023-11-06 20:28:25,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:28:25,841 INFO L93 Difference]: Finished difference Result 750 states and 2318 transitions. [2023-11-06 20:28:25,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 20:28:25,842 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 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 [2023-11-06 20:28:25,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:28:25,849 INFO L225 Difference]: With dead ends: 750 [2023-11-06 20:28:25,849 INFO L226 Difference]: Without dead ends: 750 [2023-11-06 20:28:25,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 20:28:25,850 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 16 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 20:28:25,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 4 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 20:28:25,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 750 states. [2023-11-06 20:28:25,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 750 to 598. [2023-11-06 20:28:25,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 598 states, 597 states have (on average 3.1390284757118927) internal successors, (1874), 597 states have internal predecessors, (1874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:28:25,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 1874 transitions. [2023-11-06 20:28:25,877 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 1874 transitions. Word has length 12 [2023-11-06 20:28:25,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:28:25,877 INFO L495 AbstractCegarLoop]: Abstraction has 598 states and 1874 transitions. [2023-11-06 20:28:25,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 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) [2023-11-06 20:28:25,878 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 1874 transitions. [2023-11-06 20:28:25,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-06 20:28:25,879 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:28:25,879 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 20:28:25,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 20:28:25,880 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2023-11-06 20:28:25,880 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:28:25,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1305127237, now seen corresponding path program 1 times [2023-11-06 20:28:25,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 20:28:25,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001052625] [2023-11-06 20:28:25,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:28:25,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 20:28:25,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:28:26,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 20:28:26,033 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 20:28:26,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001052625] [2023-11-06 20:28:26,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001052625] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 20:28:26,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 20:28:26,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 20:28:26,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049699032] [2023-11-06 20:28:26,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:28:26,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 20:28:26,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 20:28:26,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 20:28:26,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 20:28:26,035 INFO L87 Difference]: Start difference. First operand 598 states and 1874 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:28:26,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:28:26,131 INFO L93 Difference]: Finished difference Result 718 states and 2210 transitions. [2023-11-06 20:28:26,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 20:28:26,132 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 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 13 [2023-11-06 20:28:26,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:28:26,139 INFO L225 Difference]: With dead ends: 718 [2023-11-06 20:28:26,140 INFO L226 Difference]: Without dead ends: 718 [2023-11-06 20:28:26,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 20:28:26,141 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 20 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 20:28:26,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 7 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 20:28:26,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2023-11-06 20:28:26,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 550. [2023-11-06 20:28:26,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 550 states, 549 states have (on average 3.122040072859745) internal successors, (1714), 549 states have internal predecessors, (1714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:28:26,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 1714 transitions. [2023-11-06 20:28:26,173 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 1714 transitions. Word has length 13 [2023-11-06 20:28:26,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:28:26,173 INFO L495 AbstractCegarLoop]: Abstraction has 550 states and 1714 transitions. [2023-11-06 20:28:26,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:28:26,174 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 1714 transitions. [2023-11-06 20:28:26,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-06 20:28:26,176 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:28:26,176 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 20:28:26,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 20:28:26,176 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2023-11-06 20:28:26,177 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:28:26,177 INFO L85 PathProgramCache]: Analyzing trace with hash -1790746032, now seen corresponding path program 1 times [2023-11-06 20:28:26,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 20:28:26,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379774349] [2023-11-06 20:28:26,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:28:26,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 20:28:26,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:28:26,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 20:28:26,356 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 20:28:26,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379774349] [2023-11-06 20:28:26,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379774349] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 20:28:26,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 20:28:26,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 20:28:26,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234768833] [2023-11-06 20:28:26,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:28:26,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 20:28:26,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 20:28:26,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 20:28:26,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 20:28:26,358 INFO L87 Difference]: Start difference. First operand 550 states and 1714 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:28:26,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:28:26,452 INFO L93 Difference]: Finished difference Result 786 states and 2348 transitions. [2023-11-06 20:28:26,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 20:28:26,453 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-11-06 20:28:26,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:28:26,459 INFO L225 Difference]: With dead ends: 786 [2023-11-06 20:28:26,459 INFO L226 Difference]: Without dead ends: 650 [2023-11-06 20:28:26,460 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 20:28:26,462 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 18 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 20:28:26,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 5 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 20:28:26,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 650 states. [2023-11-06 20:28:26,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 650 to 514. [2023-11-06 20:28:26,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 514 states, 513 states have (on average 2.990253411306043) internal successors, (1534), 513 states have internal predecessors, (1534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:28:26,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 1534 transitions. [2023-11-06 20:28:26,488 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 1534 transitions. Word has length 14 [2023-11-06 20:28:26,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:28:26,489 INFO L495 AbstractCegarLoop]: Abstraction has 514 states and 1534 transitions. [2023-11-06 20:28:26,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:28:26,489 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 1534 transitions. [2023-11-06 20:28:26,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-06 20:28:26,491 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:28:26,491 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 20:28:26,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 20:28:26,491 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2023-11-06 20:28:26,492 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:28:26,492 INFO L85 PathProgramCache]: Analyzing trace with hash 72966856, now seen corresponding path program 1 times [2023-11-06 20:28:26,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 20:28:26,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281909960] [2023-11-06 20:28:26,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:28:26,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 20:28:26,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:28:26,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 20:28:26,615 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 20:28:26,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281909960] [2023-11-06 20:28:26,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281909960] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 20:28:26,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 20:28:26,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 20:28:26,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326646351] [2023-11-06 20:28:26,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:28:26,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 20:28:26,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 20:28:26,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 20:28:26,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 20:28:26,618 INFO L87 Difference]: Start difference. First operand 514 states and 1534 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:28:26,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:28:26,690 INFO L93 Difference]: Finished difference Result 730 states and 2128 transitions. [2023-11-06 20:28:26,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 20:28:26,690 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-11-06 20:28:26,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:28:26,694 INFO L225 Difference]: With dead ends: 730 [2023-11-06 20:28:26,694 INFO L226 Difference]: Without dead ends: 370 [2023-11-06 20:28:26,694 INFO L412 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 [2023-11-06 20:28:26,696 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 24 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 20:28:26,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 5 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 20:28:26,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2023-11-06 20:28:26,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 370. [2023-11-06 20:28:26,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 369 states have (on average 2.948509485094851) internal successors, (1088), 369 states have internal predecessors, (1088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:28:26,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 1088 transitions. [2023-11-06 20:28:26,716 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 1088 transitions. Word has length 14 [2023-11-06 20:28:26,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:28:26,716 INFO L495 AbstractCegarLoop]: Abstraction has 370 states and 1088 transitions. [2023-11-06 20:28:26,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:28:26,716 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 1088 transitions. [2023-11-06 20:28:26,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-06 20:28:26,717 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:28:26,717 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 20:28:26,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 20:28:26,719 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2023-11-06 20:28:26,719 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:28:26,719 INFO L85 PathProgramCache]: Analyzing trace with hash 1804238538, now seen corresponding path program 2 times [2023-11-06 20:28:26,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 20:28:26,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383501617] [2023-11-06 20:28:26,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:28:26,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 20:28:26,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:28:26,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 20:28:26,853 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 20:28:26,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383501617] [2023-11-06 20:28:26,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383501617] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 20:28:26,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 20:28:26,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 20:28:26,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811989419] [2023-11-06 20:28:26,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:28:26,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 20:28:26,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 20:28:26,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 20:28:26,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 20:28:26,856 INFO L87 Difference]: Start difference. First operand 370 states and 1088 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:28:26,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:28:26,898 INFO L93 Difference]: Finished difference Result 336 states and 928 transitions. [2023-11-06 20:28:26,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 20:28:26,899 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-11-06 20:28:26,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:28:26,902 INFO L225 Difference]: With dead ends: 336 [2023-11-06 20:28:26,902 INFO L226 Difference]: Without dead ends: 336 [2023-11-06 20:28:26,903 INFO L412 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 [2023-11-06 20:28:26,903 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 5 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 20:28:26,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 4 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 20:28:26,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2023-11-06 20:28:26,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 336. [2023-11-06 20:28:26,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 335 states have (on average 2.7701492537313435) internal successors, (928), 335 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:28:26,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 928 transitions. [2023-11-06 20:28:26,920 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 928 transitions. Word has length 14 [2023-11-06 20:28:26,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:28:26,920 INFO L495 AbstractCegarLoop]: Abstraction has 336 states and 928 transitions. [2023-11-06 20:28:26,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:28:26,920 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 928 transitions. [2023-11-06 20:28:26,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-06 20:28:26,921 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:28:26,922 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 20:28:26,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 20:28:26,922 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2023-11-06 20:28:26,922 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:28:26,923 INFO L85 PathProgramCache]: Analyzing trace with hash 612399167, now seen corresponding path program 1 times [2023-11-06 20:28:26,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 20:28:26,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289908156] [2023-11-06 20:28:26,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:28:26,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 20:28:26,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:28:27,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 20:28:27,045 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 20:28:27,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289908156] [2023-11-06 20:28:27,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289908156] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 20:28:27,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 20:28:27,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 20:28:27,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055738384] [2023-11-06 20:28:27,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:28:27,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 20:28:27,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 20:28:27,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 20:28:27,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 20:28:27,047 INFO L87 Difference]: Start difference. First operand 336 states and 928 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:28:27,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:28:27,113 INFO L93 Difference]: Finished difference Result 267 states and 668 transitions. [2023-11-06 20:28:27,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 20:28:27,113 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-11-06 20:28:27,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:28:27,116 INFO L225 Difference]: With dead ends: 267 [2023-11-06 20:28:27,116 INFO L226 Difference]: Without dead ends: 267 [2023-11-06 20:28:27,117 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 20:28:27,117 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 20 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 20:28:27,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 6 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 20:28:27,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2023-11-06 20:28:27,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 267. [2023-11-06 20:28:27,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 266 states have (on average 2.511278195488722) internal successors, (668), 266 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:28:27,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 668 transitions. [2023-11-06 20:28:27,128 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 668 transitions. Word has length 15 [2023-11-06 20:28:27,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:28:27,129 INFO L495 AbstractCegarLoop]: Abstraction has 267 states and 668 transitions. [2023-11-06 20:28:27,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:28:27,129 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 668 transitions. [2023-11-06 20:28:27,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-06 20:28:27,130 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:28:27,130 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 20:28:27,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-06 20:28:27,131 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2023-11-06 20:28:27,131 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:28:27,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1122561807, now seen corresponding path program 1 times [2023-11-06 20:28:27,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 20:28:27,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695216214] [2023-11-06 20:28:27,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:28:27,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 20:28:27,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:28:27,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 20:28:27,288 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 20:28:27,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695216214] [2023-11-06 20:28:27,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695216214] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 20:28:27,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 20:28:27,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 20:28:27,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076101493] [2023-11-06 20:28:27,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:28:27,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 20:28:27,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 20:28:27,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 20:28:27,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-06 20:28:27,290 INFO L87 Difference]: Start difference. First operand 267 states and 668 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:28:27,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:28:27,365 INFO L93 Difference]: Finished difference Result 215 states and 522 transitions. [2023-11-06 20:28:27,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 20:28:27,366 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-11-06 20:28:27,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:28:27,368 INFO L225 Difference]: With dead ends: 215 [2023-11-06 20:28:27,368 INFO L226 Difference]: Without dead ends: 207 [2023-11-06 20:28:27,368 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-06 20:28:27,369 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 21 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 20:28:27,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 8 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 20:28:27,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2023-11-06 20:28:27,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2023-11-06 20:28:27,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 206 states have (on average 2.4174757281553396) internal successors, (498), 206 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:28:27,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 498 transitions. [2023-11-06 20:28:27,377 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 498 transitions. Word has length 16 [2023-11-06 20:28:27,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:28:27,378 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 498 transitions. [2023-11-06 20:28:27,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:28:27,378 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 498 transitions. [2023-11-06 20:28:27,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-06 20:28:27,379 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:28:27,379 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 20:28:27,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-06 20:28:27,380 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2023-11-06 20:28:27,380 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:28:27,380 INFO L85 PathProgramCache]: Analyzing trace with hash -926814144, now seen corresponding path program 1 times [2023-11-06 20:28:27,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 20:28:27,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655442553] [2023-11-06 20:28:27,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:28:27,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 20:28:27,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:28:27,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 20:28:27,511 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 20:28:27,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655442553] [2023-11-06 20:28:27,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655442553] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 20:28:27,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 20:28:27,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 20:28:27,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336157708] [2023-11-06 20:28:27,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:28:27,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 20:28:27,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 20:28:27,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 20:28:27,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 20:28:27,513 INFO L87 Difference]: Start difference. First operand 207 states and 498 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:28:27,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:28:27,585 INFO L93 Difference]: Finished difference Result 279 states and 654 transitions. [2023-11-06 20:28:27,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 20:28:27,585 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 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 [2023-11-06 20:28:27,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:28:27,587 INFO L225 Difference]: With dead ends: 279 [2023-11-06 20:28:27,587 INFO L226 Difference]: Without dead ends: 215 [2023-11-06 20:28:27,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 20:28:27,588 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 19 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 20:28:27,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 4 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 20:28:27,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2023-11-06 20:28:27,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 198. [2023-11-06 20:28:27,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 197 states have (on average 2.3553299492385786) internal successors, (464), 197 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:28:27,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 464 transitions. [2023-11-06 20:28:27,597 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 464 transitions. Word has length 18 [2023-11-06 20:28:27,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:28:27,597 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 464 transitions. [2023-11-06 20:28:27,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:28:27,598 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 464 transitions. [2023-11-06 20:28:27,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-06 20:28:27,598 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:28:27,599 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 20:28:27,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-06 20:28:27,599 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2023-11-06 20:28:27,599 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:28:27,600 INFO L85 PathProgramCache]: Analyzing trace with hash -1226854528, now seen corresponding path program 2 times [2023-11-06 20:28:27,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 20:28:27,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259162057] [2023-11-06 20:28:27,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:28:27,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 20:28:27,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:28:27,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 20:28:27,757 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 20:28:27,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259162057] [2023-11-06 20:28:27,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259162057] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 20:28:27,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 20:28:27,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 20:28:27,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149474686] [2023-11-06 20:28:27,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:28:27,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 20:28:27,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 20:28:27,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 20:28:27,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 20:28:27,759 INFO L87 Difference]: Start difference. First operand 198 states and 464 transitions. Second operand has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:28:27,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:28:27,851 INFO L93 Difference]: Finished difference Result 249 states and 562 transitions. [2023-11-06 20:28:27,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 20:28:27,852 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 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 [2023-11-06 20:28:27,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:28:27,853 INFO L225 Difference]: With dead ends: 249 [2023-11-06 20:28:27,853 INFO L226 Difference]: Without dead ends: 151 [2023-11-06 20:28:27,854 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-11-06 20:28:27,854 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 38 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 20:28:27,855 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 6 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 20:28:27,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2023-11-06 20:28:27,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 143. [2023-11-06 20:28:27,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 142 states have (on average 2.1338028169014085) internal successors, (303), 142 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:28:27,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 303 transitions. [2023-11-06 20:28:27,861 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 303 transitions. Word has length 18 [2023-11-06 20:28:27,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:28:27,861 INFO L495 AbstractCegarLoop]: Abstraction has 143 states and 303 transitions. [2023-11-06 20:28:27,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:28:27,861 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 303 transitions. [2023-11-06 20:28:27,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-06 20:28:27,862 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:28:27,862 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 20:28:27,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-06 20:28:27,863 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2023-11-06 20:28:27,863 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:28:27,863 INFO L85 PathProgramCache]: Analyzing trace with hash -165997018, now seen corresponding path program 3 times [2023-11-06 20:28:27,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 20:28:27,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106566761] [2023-11-06 20:28:27,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:28:27,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 20:28:27,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:28:27,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 20:28:27,997 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 20:28:27,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106566761] [2023-11-06 20:28:27,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106566761] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 20:28:27,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 20:28:27,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 20:28:27,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402435707] [2023-11-06 20:28:27,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:28:27,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 20:28:27,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 20:28:27,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 20:28:27,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-06 20:28:27,999 INFO L87 Difference]: Start difference. First operand 143 states and 303 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:28:28,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:28:28,079 INFO L93 Difference]: Finished difference Result 128 states and 275 transitions. [2023-11-06 20:28:28,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 20:28:28,079 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 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 [2023-11-06 20:28:28,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:28:28,080 INFO L225 Difference]: With dead ends: 128 [2023-11-06 20:28:28,080 INFO L226 Difference]: Without dead ends: 52 [2023-11-06 20:28:28,080 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-06 20:28:28,081 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 36 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 20:28:28,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 5 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 20:28:28,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2023-11-06 20:28:28,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2023-11-06 20:28:28,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.8627450980392157) internal successors, (95), 51 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:28:28,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 95 transitions. [2023-11-06 20:28:28,084 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 95 transitions. Word has length 18 [2023-11-06 20:28:28,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:28:28,085 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 95 transitions. [2023-11-06 20:28:28,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:28:28,085 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 95 transitions. [2023-11-06 20:28:28,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-06 20:28:28,086 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:28:28,086 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 20:28:28,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-06 20:28:28,086 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2023-11-06 20:28:28,086 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:28:28,087 INFO L85 PathProgramCache]: Analyzing trace with hash -655141671, now seen corresponding path program 1 times [2023-11-06 20:28:28,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 20:28:28,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901679444] [2023-11-06 20:28:28,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:28:28,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 20:28:28,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:28:28,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 20:28:28,230 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-06 20:28:28,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901679444] [2023-11-06 20:28:28,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901679444] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 20:28:28,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 20:28:28,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 20:28:28,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242004257] [2023-11-06 20:28:28,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:28:28,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 20:28:28,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-06 20:28:28,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 20:28:28,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 20:28:28,232 INFO L87 Difference]: Start difference. First operand 52 states and 95 transitions. Second operand has 5 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:28:28,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:28:28,268 INFO L93 Difference]: Finished difference Result 51 states and 94 transitions. [2023-11-06 20:28:28,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 20:28:28,269 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2023-11-06 20:28:28,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:28:28,270 INFO L225 Difference]: With dead ends: 51 [2023-11-06 20:28:28,270 INFO L226 Difference]: Without dead ends: 0 [2023-11-06 20:28:28,270 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-11-06 20:28:28,271 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 18 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 20:28:28,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 2 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 20:28:28,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-06 20:28:28,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-06 20:28:28,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:28:28,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-06 20:28:28,272 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2023-11-06 20:28:28,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:28:28,273 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-06 20:28:28,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:28:28,273 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-06 20:28:28,273 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-06 20:28:28,276 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 14 remaining) [2023-11-06 20:28:28,276 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 14 remaining) [2023-11-06 20:28:28,276 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 14 remaining) [2023-11-06 20:28:28,277 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 14 remaining) [2023-11-06 20:28:28,277 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 14 remaining) [2023-11-06 20:28:28,277 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 14 remaining) [2023-11-06 20:28:28,277 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 14 remaining) [2023-11-06 20:28:28,277 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 14 remaining) [2023-11-06 20:28:28,278 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (5 of 14 remaining) [2023-11-06 20:28:28,278 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK (4 of 14 remaining) [2023-11-06 20:28:28,278 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 14 remaining) [2023-11-06 20:28:28,278 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 14 remaining) [2023-11-06 20:28:28,278 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 14 remaining) [2023-11-06 20:28:28,279 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 14 remaining) [2023-11-06 20:28:28,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-06 20:28:28,281 INFO L445 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 20:28:28,284 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-06 20:28:28,284 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 20:28:28,287 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 08:28:28 BasicIcfg [2023-11-06 20:28:28,288 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 20:28:28,288 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 20:28:28,289 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 20:28:28,289 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 20:28:28,289 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:28:18" (3/4) ... [2023-11-06 20:28:28,291 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-06 20:28:28,296 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-11-06 20:28:28,296 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-11-06 20:28:28,296 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2023-11-06 20:28:28,296 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2023-11-06 20:28:28,302 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2023-11-06 20:28:28,302 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-11-06 20:28:28,302 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-06 20:28:28,303 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-06 20:28:28,352 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_489de73a-193c-4ab5-b49c-e0d080362b74/bin/utaipan-verify-FOvIYxoinp/witness.graphml.graphml [2023-11-06 20:28:28,353 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_489de73a-193c-4ab5-b49c-e0d080362b74/bin/utaipan-verify-FOvIYxoinp/witness.graphml.yaml [2023-11-06 20:28:28,353 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 20:28:28,354 INFO L158 Benchmark]: Toolchain (without parser) took 11641.31ms. Allocated memory was 140.5MB in the beginning and 222.3MB in the end (delta: 81.8MB). Free memory was 92.7MB in the beginning and 73.0MB in the end (delta: 19.7MB). Peak memory consumption was 103.2MB. Max. memory is 16.1GB. [2023-11-06 20:28:28,354 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 140.5MB. Free memory is still 112.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 20:28:28,354 INFO L158 Benchmark]: CACSL2BoogieTranslator took 674.15ms. Allocated memory is still 140.5MB. Free memory was 92.7MB in the beginning and 71.8MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-06 20:28:28,355 INFO L158 Benchmark]: Boogie Procedure Inliner took 80.23ms. Allocated memory is still 140.5MB. Free memory was 71.8MB in the beginning and 70.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 20:28:28,355 INFO L158 Benchmark]: Boogie Preprocessor took 52.07ms. Allocated memory is still 140.5MB. Free memory was 69.6MB in the beginning and 68.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 20:28:28,356 INFO L158 Benchmark]: RCFGBuilder took 522.94ms. Allocated memory is still 140.5MB. Free memory was 68.1MB in the beginning and 52.5MB in the end (delta: 15.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-06 20:28:28,356 INFO L158 Benchmark]: TraceAbstraction took 10219.25ms. Allocated memory was 140.5MB in the beginning and 222.3MB in the end (delta: 81.8MB). Free memory was 108.9MB in the beginning and 77.2MB in the end (delta: 31.7MB). Peak memory consumption was 111.8MB. Max. memory is 16.1GB. [2023-11-06 20:28:28,356 INFO L158 Benchmark]: Witness Printer took 64.69ms. Allocated memory is still 222.3MB. Free memory was 77.2MB in the beginning and 73.0MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-06 20:28:28,358 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 140.5MB. Free memory is still 112.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 674.15ms. Allocated memory is still 140.5MB. Free memory was 92.7MB in the beginning and 71.8MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 80.23ms. Allocated memory is still 140.5MB. Free memory was 71.8MB in the beginning and 70.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 52.07ms. Allocated memory is still 140.5MB. Free memory was 69.6MB in the beginning and 68.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 522.94ms. Allocated memory is still 140.5MB. Free memory was 68.1MB in the beginning and 52.5MB in the end (delta: 15.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 10219.25ms. Allocated memory was 140.5MB in the beginning and 222.3MB in the end (delta: 81.8MB). Free memory was 108.9MB in the beginning and 77.2MB in the end (delta: 31.7MB). Peak memory consumption was 111.8MB. Max. memory is 16.1GB. * Witness Printer took 64.69ms. Allocated memory is still 222.3MB. Free memory was 77.2MB in the beginning and 73.0MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.3s, 128 PlacesBefore, 47 PlacesAfterwards, 118 TransitionsBefore, 34 TransitionsAfterwards, 2822 CoEnabledTransitionPairs, 6 FixpointIterations, 27 TrivialSequentialCompositions, 80 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 12 ConcurrentYvCompositions, 3 ChoiceCompositions, 122 TotalNumberOfCompositions, 5064 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3065, independent: 2961, independent conditional: 0, independent unconditional: 2961, dependent: 104, dependent conditional: 0, dependent unconditional: 104, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2006, independent: 1960, independent conditional: 0, independent unconditional: 1960, dependent: 46, dependent conditional: 0, dependent unconditional: 46, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2006, independent: 1937, independent conditional: 0, independent unconditional: 1937, dependent: 69, dependent conditional: 0, dependent unconditional: 69, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 69, independent: 23, independent conditional: 0, independent unconditional: 23, dependent: 46, dependent conditional: 0, dependent unconditional: 46, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 215, independent: 77, independent conditional: 0, independent unconditional: 77, dependent: 138, dependent conditional: 0, dependent unconditional: 138, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3065, independent: 1001, independent conditional: 0, independent unconditional: 1001, dependent: 58, dependent conditional: 0, dependent unconditional: 58, unknown: 2006, unknown conditional: 0, unknown unconditional: 2006] , Statistics on independence cache: Total cache size (in pairs): 117, Positive cache size: 103, Positive conditional cache size: 0, Positive unconditional cache size: 103, Negative cache size: 14, Negative conditional cache size: 0, Negative unconditional cache size: 14, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - 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 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 17]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 784]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 146 locations, 14 error locations. Started 1 CEGAR loops. OverallTime: 10.0s, OverallIterations: 16, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 308 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 308 mSDsluCounter, 96 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 53 mSDsCounter, 44 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 831 IncrementalHoareTripleChecker+Invalid, 875 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 44 mSolverCounterUnsat, 43 mSDtfsCounter, 831 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 46 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=836occurred in iteration=0, InterpolantAutomatonStates: 67, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 16 MinimizatonAttempts, 825 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.9s InterpolantComputationTime, 215 NumberOfCodeBlocks, 215 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 199 ConstructedInterpolants, 0 QuantifiedInterpolants, 1200 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 PerfectInterpolantSequences, 0/0 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 - AllSpecificationsHoldResult: All specifications hold 10 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-06 20:28:28,376 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_489de73a-193c-4ab5-b49c-e0d080362b74/bin/utaipan-verify-FOvIYxoinp/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 Writing output log to file Ultimate.log Result: TRUE