./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/mix005_power.oepc_pso.oepc_rmo.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 30e01a73 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_9b55a8f3-14d6-45a3-9cfa-d2d5e5c462d4/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b55a8f3-14d6-45a3-9cfa-d2d5e5c462d4/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b55a8f3-14d6-45a3-9cfa-d2d5e5c462d4/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b55a8f3-14d6-45a3-9cfa-d2d5e5c462d4/bin/utaipan-verify-mE87zJ7Ire/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/mix005_power.oepc_pso.oepc_rmo.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b55a8f3-14d6-45a3-9cfa-d2d5e5c462d4/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b55a8f3-14d6-45a3-9cfa-d2d5e5c462d4/bin/utaipan-verify-mE87zJ7Ire --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2272010dc8e07b1cac46beb8b69d58bd905467d4d1bd6fb11b2eb1922da454c5 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:20:16,819 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:20:16,954 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b55a8f3-14d6-45a3-9cfa-d2d5e5c462d4/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-11-23 21:20:16,964 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:20:16,965 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:20:17,003 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:20:17,004 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:20:17,005 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:20:17,006 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:20:17,007 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:20:17,007 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:20:17,008 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:20:17,009 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:20:17,009 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:20:17,010 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:20:17,011 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:20:17,012 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:20:17,012 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:20:17,013 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:20:17,014 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:20:17,014 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:20:17,015 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:20:17,016 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 21:20:17,017 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 21:20:17,018 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:20:17,019 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:20:17,019 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:20:17,020 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:20:17,020 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:20:17,021 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-23 21:20:17,022 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-23 21:20:17,022 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-23 21:20:17,023 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:20:17,023 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-23 21:20:17,024 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 21:20:17,024 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:20:17,025 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:20:17,025 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:20:17,026 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:20:17,026 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:20:17,026 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:20:17,027 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:20:17,027 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:20:17,027 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:20:17,028 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:20:17,028 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:20:17,028 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:20:17,029 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:20:17,029 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_9b55a8f3-14d6-45a3-9cfa-d2d5e5c462d4/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b55a8f3-14d6-45a3-9cfa-d2d5e5c462d4/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2272010dc8e07b1cac46beb8b69d58bd905467d4d1bd6fb11b2eb1922da454c5 [2023-11-23 21:20:17,334 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:20:17,358 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:20:17,361 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:20:17,362 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:20:17,363 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:20:17,364 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b55a8f3-14d6-45a3-9cfa-d2d5e5c462d4/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/pthread-wmm/mix005_power.oepc_pso.oepc_rmo.oepc.i [2023-11-23 21:20:20,508 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:20:20,781 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:20:20,787 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b55a8f3-14d6-45a3-9cfa-d2d5e5c462d4/sv-benchmarks/c/pthread-wmm/mix005_power.oepc_pso.oepc_rmo.oepc.i [2023-11-23 21:20:20,821 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b55a8f3-14d6-45a3-9cfa-d2d5e5c462d4/bin/utaipan-verify-mE87zJ7Ire/data/4e5f6f258/647ba31861dd481b9ab1cb7743f2dd90/FLAG38fe81537 [2023-11-23 21:20:20,840 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b55a8f3-14d6-45a3-9cfa-d2d5e5c462d4/bin/utaipan-verify-mE87zJ7Ire/data/4e5f6f258/647ba31861dd481b9ab1cb7743f2dd90 [2023-11-23 21:20:20,849 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:20:20,852 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:20:20,856 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:20:20,856 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:20:20,862 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:20:20,863 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:20:20" (1/1) ... [2023-11-23 21:20:20,865 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57ab5762 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:20:20, skipping insertion in model container [2023-11-23 21:20:20,865 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:20:20" (1/1) ... [2023-11-23 21:20:20,951 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:20:21,511 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:20:21,528 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:20:21,605 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:20:21,640 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:20:21,640 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:20:21,648 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:20:21,648 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:20:21 WrapperNode [2023-11-23 21:20:21,648 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:20:21,650 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:20:21,650 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:20:21,650 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:20:21,658 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:20:21" (1/1) ... [2023-11-23 21:20:21,683 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:20:21" (1/1) ... [2023-11-23 21:20:21,711 INFO L138 Inliner]: procedures = 177, calls = 72, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 151 [2023-11-23 21:20:21,712 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:20:21,712 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:20:21,713 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:20:21,713 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:20:21,723 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:20:21" (1/1) ... [2023-11-23 21:20:21,723 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:20:21" (1/1) ... [2023-11-23 21:20:21,728 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:20:21" (1/1) ... [2023-11-23 21:20:21,729 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:20:21" (1/1) ... [2023-11-23 21:20:21,742 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:20:21" (1/1) ... [2023-11-23 21:20:21,744 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:20:21" (1/1) ... [2023-11-23 21:20:21,747 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:20:21" (1/1) ... [2023-11-23 21:20:21,750 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:20:21" (1/1) ... [2023-11-23 21:20:21,755 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:20:21,756 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:20:21,756 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:20:21,756 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:20:21,758 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:20:21" (1/1) ... [2023-11-23 21:20:21,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:20:21,779 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b55a8f3-14d6-45a3-9cfa-d2d5e5c462d4/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:20:21,810 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b55a8f3-14d6-45a3-9cfa-d2d5e5c462d4/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:20:21,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b55a8f3-14d6-45a3-9cfa-d2d5e5c462d4/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:20:21,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 21:20:21,863 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-23 21:20:21,863 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:20:21,863 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:20:21,865 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:20:21,866 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-23 21:20:21,866 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-23 21:20:21,866 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-23 21:20:21,866 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-23 21:20:21,867 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-23 21:20:21,867 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-23 21:20:21,867 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-11-23 21:20:21,867 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-11-23 21:20:21,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:20:21,868 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-23 21:20:21,869 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:20:21,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:20:21,872 WARN L213 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-23 21:20:22,046 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:20:22,049 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:20:22,579 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:20:22,858 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:20:22,858 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 21:20:22,859 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:20:22 BoogieIcfgContainer [2023-11-23 21:20:22,859 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:20:22,862 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:20:22,862 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:20:22,865 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:20:22,865 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:20:20" (1/3) ... [2023-11-23 21:20:22,866 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11366842 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:20:22, skipping insertion in model container [2023-11-23 21:20:22,866 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:20:21" (2/3) ... [2023-11-23 21:20:22,867 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11366842 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:20:22, skipping insertion in model container [2023-11-23 21:20:22,867 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:20:22" (3/3) ... [2023-11-23 21:20:22,868 INFO L112 eAbstractionObserver]: Analyzing ICFG mix005_power.oepc_pso.oepc_rmo.oepc.i [2023-11-23 21:20:22,889 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:20:22,890 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2023-11-23 21:20:22,890 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-23 21:20:22,947 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-23 21:20:22,988 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 78 places, 67 transitions, 150 flow [2023-11-23 21:20:25,953 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 54085 states, 54066 states have (on average 4.497262604964303) internal successors, (243149), 54084 states have internal predecessors, (243149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:20:25,979 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:20:25,987 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;@4485cb2b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:20:25,987 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2023-11-23 21:20:26,076 INFO L276 IsEmpty]: Start isEmpty. Operand has 54085 states, 54066 states have (on average 4.497262604964303) internal successors, (243149), 54084 states have internal predecessors, (243149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:20:26,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-23 21:20:26,090 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:20:26,091 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-23 21:20:26,092 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-23 21:20:26,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:20:26,101 INFO L85 PathProgramCache]: Analyzing trace with hash 14397, now seen corresponding path program 1 times [2023-11-23 21:20:26,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:20:26,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116768012] [2023-11-23 21:20:26,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:20:26,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:20:26,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:20:26,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:20:26,852 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:20:26,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116768012] [2023-11-23 21:20:26,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116768012] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:20:26,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:20:26,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-23 21:20:26,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749509165] [2023-11-23 21:20:26,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:20:26,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:20:26,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:20:26,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:20:26,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:20:27,060 INFO L87 Difference]: Start difference. First operand has 54085 states, 54066 states have (on average 4.497262604964303) internal successors, (243149), 54084 states have internal predecessors, (243149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:20:29,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:20:29,098 INFO L93 Difference]: Finished difference Result 50500 states and 219916 transitions. [2023-11-23 21:20:29,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:20:29,101 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 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 2 [2023-11-23 21:20:29,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:20:29,886 INFO L225 Difference]: With dead ends: 50500 [2023-11-23 21:20:29,886 INFO L226 Difference]: Without dead ends: 50500 [2023-11-23 21:20:29,888 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 [2023-11-23 21:20:29,892 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 52 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:20:29,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 41 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 21:20:30,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50500 states. [2023-11-23 21:20:32,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50500 to 50500. [2023-11-23 21:20:33,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50500 states, 50482 states have (on average 4.356325026742205) internal successors, (219916), 50499 states have internal predecessors, (219916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:20:34,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50500 states to 50500 states and 219916 transitions. [2023-11-23 21:20:34,077 INFO L78 Accepts]: Start accepts. Automaton has 50500 states and 219916 transitions. Word has length 2 [2023-11-23 21:20:34,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:20:34,077 INFO L495 AbstractCegarLoop]: Abstraction has 50500 states and 219916 transitions. [2023-11-23 21:20:34,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:20:34,078 INFO L276 IsEmpty]: Start isEmpty. Operand 50500 states and 219916 transitions. [2023-11-23 21:20:34,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-23 21:20:34,078 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:20:34,079 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-23 21:20:34,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:20:34,079 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-23 21:20:34,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:20:34,080 INFO L85 PathProgramCache]: Analyzing trace with hash 14398, now seen corresponding path program 1 times [2023-11-23 21:20:34,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:20:34,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594457645] [2023-11-23 21:20:34,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:20:34,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:20:34,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:20:34,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:20:34,227 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:20:34,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594457645] [2023-11-23 21:20:34,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594457645] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:20:34,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:20:34,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-23 21:20:34,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381949575] [2023-11-23 21:20:34,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:20:34,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:20:34,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:20:34,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:20:34,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:20:34,232 INFO L87 Difference]: Start difference. First operand 50500 states and 219916 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:20:35,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:20:35,358 INFO L93 Difference]: Finished difference Result 50499 states and 219915 transitions. [2023-11-23 21:20:35,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:20:35,360 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 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 2 [2023-11-23 21:20:35,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:20:35,916 INFO L225 Difference]: With dead ends: 50499 [2023-11-23 21:20:35,916 INFO L226 Difference]: Without dead ends: 50499 [2023-11-23 21:20:35,916 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 [2023-11-23 21:20:35,918 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 51 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:20:35,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 42 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:20:36,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50499 states. [2023-11-23 21:20:37,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50499 to 50499. [2023-11-23 21:20:38,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50499 states, 50482 states have (on average 4.356305217701359) internal successors, (219915), 50498 states have internal predecessors, (219915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:20:39,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50499 states to 50499 states and 219915 transitions. [2023-11-23 21:20:39,047 INFO L78 Accepts]: Start accepts. Automaton has 50499 states and 219915 transitions. Word has length 2 [2023-11-23 21:20:39,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:20:39,047 INFO L495 AbstractCegarLoop]: Abstraction has 50499 states and 219915 transitions. [2023-11-23 21:20:39,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:20:39,048 INFO L276 IsEmpty]: Start isEmpty. Operand 50499 states and 219915 transitions. [2023-11-23 21:20:39,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-23 21:20:39,049 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:20:39,049 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-23 21:20:39,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 21:20:39,049 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-23 21:20:39,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:20:39,050 INFO L85 PathProgramCache]: Analyzing trace with hash 429340393, now seen corresponding path program 1 times [2023-11-23 21:20:39,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:20:39,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21725431] [2023-11-23 21:20:39,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:20:39,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:20:39,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:20:39,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:20:39,133 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:20:39,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21725431] [2023-11-23 21:20:39,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21725431] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:20:39,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:20:39,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:20:39,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233141955] [2023-11-23 21:20:39,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:20:39,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:20:39,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:20:39,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:20:39,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:20:39,140 INFO L87 Difference]: Start difference. First operand 50499 states and 219915 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:20:40,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:20:40,314 INFO L93 Difference]: Finished difference Result 50491 states and 219900 transitions. [2023-11-23 21:20:40,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:20:40,315 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-23 21:20:40,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:20:40,795 INFO L225 Difference]: With dead ends: 50491 [2023-11-23 21:20:40,795 INFO L226 Difference]: Without dead ends: 50491 [2023-11-23 21:20:40,795 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 [2023-11-23 21:20:40,798 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 48 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:20:40,799 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 44 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:20:40,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50491 states. [2023-11-23 21:20:42,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50491 to 50491. [2023-11-23 21:20:42,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50491 states, 50476 states have (on average 4.356525873682542) internal successors, (219900), 50490 states have internal predecessors, (219900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:20:43,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50491 states to 50491 states and 219900 transitions. [2023-11-23 21:20:43,012 INFO L78 Accepts]: Start accepts. Automaton has 50491 states and 219900 transitions. Word has length 5 [2023-11-23 21:20:43,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:20:43,012 INFO L495 AbstractCegarLoop]: Abstraction has 50491 states and 219900 transitions. [2023-11-23 21:20:43,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:20:43,013 INFO L276 IsEmpty]: Start isEmpty. Operand 50491 states and 219900 transitions. [2023-11-23 21:20:43,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-23 21:20:43,013 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:20:43,014 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-23 21:20:43,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 21:20:43,014 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-23 21:20:43,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:20:43,015 INFO L85 PathProgramCache]: Analyzing trace with hash 429340394, now seen corresponding path program 1 times [2023-11-23 21:20:43,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:20:43,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415050856] [2023-11-23 21:20:43,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:20:43,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:20:43,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:20:43,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:20:43,170 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:20:43,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415050856] [2023-11-23 21:20:43,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415050856] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:20:43,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:20:43,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:20:43,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297960755] [2023-11-23 21:20:43,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:20:43,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:20:43,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:20:43,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:20:43,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:20:43,174 INFO L87 Difference]: Start difference. First operand 50491 states and 219900 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:20:44,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:20:44,643 INFO L93 Difference]: Finished difference Result 50483 states and 219885 transitions. [2023-11-23 21:20:44,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:20:44,644 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-23 21:20:44,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:20:44,906 INFO L225 Difference]: With dead ends: 50483 [2023-11-23 21:20:44,906 INFO L226 Difference]: Without dead ends: 50483 [2023-11-23 21:20:44,907 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 [2023-11-23 21:20:44,908 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 47 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-23 21:20:44,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 45 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-23 21:20:45,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50483 states. [2023-11-23 21:20:46,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50483 to 50483. [2023-11-23 21:20:46,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50483 states, 50470 states have (on average 4.356746582127997) internal successors, (219885), 50482 states have internal predecessors, (219885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:20:47,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50483 states to 50483 states and 219885 transitions. [2023-11-23 21:20:47,708 INFO L78 Accepts]: Start accepts. Automaton has 50483 states and 219885 transitions. Word has length 5 [2023-11-23 21:20:47,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:20:47,710 INFO L495 AbstractCegarLoop]: Abstraction has 50483 states and 219885 transitions. [2023-11-23 21:20:47,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:20:47,711 INFO L276 IsEmpty]: Start isEmpty. Operand 50483 states and 219885 transitions. [2023-11-23 21:20:47,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-23 21:20:47,711 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:20:47,711 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-23 21:20:47,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 21:20:47,712 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting P0Err0ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-23 21:20:47,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:20:47,712 INFO L85 PathProgramCache]: Analyzing trace with hash 429342016, now seen corresponding path program 1 times [2023-11-23 21:20:47,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:20:47,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541086904] [2023-11-23 21:20:47,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:20:47,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:20:47,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:20:47,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:20:47,847 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:20:47,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541086904] [2023-11-23 21:20:47,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541086904] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:20:47,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:20:47,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-23 21:20:47,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103899386] [2023-11-23 21:20:47,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:20:47,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:20:47,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:20:47,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:20:47,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:20:47,852 INFO L87 Difference]: Start difference. First operand 50483 states and 219885 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:20:48,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:20:48,268 INFO L93 Difference]: Finished difference Result 43893 states and 190286 transitions. [2023-11-23 21:20:48,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:20:48,269 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-23 21:20:48,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:20:48,550 INFO L225 Difference]: With dead ends: 43893 [2023-11-23 21:20:48,550 INFO L226 Difference]: Without dead ends: 42997 [2023-11-23 21:20:48,550 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 [2023-11-23 21:20:48,551 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 41 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:20:48,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 58 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:20:48,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42997 states. [2023-11-23 21:20:50,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42997 to 42997. [2023-11-23 21:20:50,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42997 states, 42991 states have (on average 4.340582912702659) internal successors, (186606), 42996 states have internal predecessors, (186606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:20:50,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42997 states to 42997 states and 186606 transitions. [2023-11-23 21:20:50,799 INFO L78 Accepts]: Start accepts. Automaton has 42997 states and 186606 transitions. Word has length 5 [2023-11-23 21:20:50,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:20:50,800 INFO L495 AbstractCegarLoop]: Abstraction has 42997 states and 186606 transitions. [2023-11-23 21:20:50,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:20:50,800 INFO L276 IsEmpty]: Start isEmpty. Operand 42997 states and 186606 transitions. [2023-11-23 21:20:50,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-23 21:20:50,801 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:20:50,801 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:20:50,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-23 21:20:50,801 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-23 21:20:50,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:20:50,802 INFO L85 PathProgramCache]: Analyzing trace with hash 67484712, now seen corresponding path program 1 times [2023-11-23 21:20:50,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:20:50,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311774701] [2023-11-23 21:20:50,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:20:50,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:20:50,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:20:50,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:20:50,871 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:20:50,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311774701] [2023-11-23 21:20:50,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311774701] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:20:50,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:20:50,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:20:50,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187066305] [2023-11-23 21:20:50,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:20:50,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:20:50,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:20:50,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:20:50,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:20:50,874 INFO L87 Difference]: Start difference. First operand 42997 states and 186606 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:20:52,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:20:52,084 INFO L93 Difference]: Finished difference Result 42948 states and 186473 transitions. [2023-11-23 21:20:52,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:20:52,084 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-23 21:20:52,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:20:52,327 INFO L225 Difference]: With dead ends: 42948 [2023-11-23 21:20:52,327 INFO L226 Difference]: Without dead ends: 42948 [2023-11-23 21:20:52,327 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 [2023-11-23 21:20:52,330 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 43 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-23 21:20:52,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 48 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-23 21:20:52,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42948 states. [2023-11-23 21:20:53,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42948 to 42948. [2023-11-23 21:20:53,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42948 states, 42943 states have (on average 4.342337517173928) internal successors, (186473), 42947 states have internal predecessors, (186473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:20:54,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42948 states to 42948 states and 186473 transitions. [2023-11-23 21:20:54,081 INFO L78 Accepts]: Start accepts. Automaton has 42948 states and 186473 transitions. Word has length 8 [2023-11-23 21:20:54,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:20:54,082 INFO L495 AbstractCegarLoop]: Abstraction has 42948 states and 186473 transitions. [2023-11-23 21:20:54,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:20:54,084 INFO L276 IsEmpty]: Start isEmpty. Operand 42948 states and 186473 transitions. [2023-11-23 21:20:54,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-23 21:20:54,084 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:20:54,085 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:20:54,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-23 21:20:54,085 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-23 21:20:54,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:20:54,086 INFO L85 PathProgramCache]: Analyzing trace with hash 67484713, now seen corresponding path program 1 times [2023-11-23 21:20:54,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:20:54,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87224012] [2023-11-23 21:20:54,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:20:54,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:20:54,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:20:54,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:20:54,160 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:20:54,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87224012] [2023-11-23 21:20:54,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87224012] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:20:54,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:20:54,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:20:54,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329332956] [2023-11-23 21:20:54,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:20:54,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:20:54,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:20:54,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:20:54,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:20:54,163 INFO L87 Difference]: Start difference. First operand 42948 states and 186473 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:20:55,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:20:55,451 INFO L93 Difference]: Finished difference Result 42899 states and 186340 transitions. [2023-11-23 21:20:55,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:20:55,464 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-23 21:20:55,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:20:55,811 INFO L225 Difference]: With dead ends: 42899 [2023-11-23 21:20:55,811 INFO L226 Difference]: Without dead ends: 42899 [2023-11-23 21:20:55,812 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 [2023-11-23 21:20:55,817 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 42 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:20:55,818 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 49 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:20:55,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42899 states. [2023-11-23 21:20:57,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42899 to 42899. [2023-11-23 21:20:57,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42899 states, 42895 states have (on average 4.3440960484905) internal successors, (186340), 42898 states have internal predecessors, (186340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:20:57,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42899 states to 42899 states and 186340 transitions. [2023-11-23 21:20:57,911 INFO L78 Accepts]: Start accepts. Automaton has 42899 states and 186340 transitions. Word has length 8 [2023-11-23 21:20:57,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:20:57,911 INFO L495 AbstractCegarLoop]: Abstraction has 42899 states and 186340 transitions. [2023-11-23 21:20:57,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:20:57,911 INFO L276 IsEmpty]: Start isEmpty. Operand 42899 states and 186340 transitions. [2023-11-23 21:20:57,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-23 21:20:57,913 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:20:57,913 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:20:57,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-23 21:20:57,913 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-23 21:20:57,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:20:57,914 INFO L85 PathProgramCache]: Analyzing trace with hash 392802744, now seen corresponding path program 1 times [2023-11-23 21:20:57,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:20:57,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868947239] [2023-11-23 21:20:57,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:20:57,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:20:57,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:20:57,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:20:57,994 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:20:57,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868947239] [2023-11-23 21:20:57,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868947239] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:20:57,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:20:57,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:20:57,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283962021] [2023-11-23 21:20:57,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:20:57,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:20:57,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:20:57,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:20:57,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:20:57,997 INFO L87 Difference]: Start difference. First operand 42899 states and 186340 transitions. Second operand has 3 states, 2 states have (on average 5.5) 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) [2023-11-23 21:20:58,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:20:58,495 INFO L93 Difference]: Finished difference Result 42507 states and 184933 transitions. [2023-11-23 21:20:58,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:20:58,496 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) 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 [2023-11-23 21:20:58,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:20:58,699 INFO L225 Difference]: With dead ends: 42507 [2023-11-23 21:20:58,699 INFO L226 Difference]: Without dead ends: 42507 [2023-11-23 21:20:58,699 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 [2023-11-23 21:20:58,700 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 39 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:20:58,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 53 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:20:58,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42507 states. [2023-11-23 21:21:00,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42507 to 42507. [2023-11-23 21:21:00,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42507 states, 42504 states have (on average 4.350955204216074) internal successors, (184933), 42506 states have internal predecessors, (184933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:21:00,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42507 states to 42507 states and 184933 transitions. [2023-11-23 21:21:00,783 INFO L78 Accepts]: Start accepts. Automaton has 42507 states and 184933 transitions. Word has length 11 [2023-11-23 21:21:00,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:21:00,784 INFO L495 AbstractCegarLoop]: Abstraction has 42507 states and 184933 transitions. [2023-11-23 21:21:00,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) 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) [2023-11-23 21:21:00,784 INFO L276 IsEmpty]: Start isEmpty. Operand 42507 states and 184933 transitions. [2023-11-23 21:21:00,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-23 21:21:00,786 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:21:00,786 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:21:00,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-23 21:21:00,787 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-23 21:21:00,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:21:00,787 INFO L85 PathProgramCache]: Analyzing trace with hash 392802745, now seen corresponding path program 1 times [2023-11-23 21:21:00,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:21:00,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597564166] [2023-11-23 21:21:00,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:21:00,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:21:00,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:21:00,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:21:00,872 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:21:00,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597564166] [2023-11-23 21:21:00,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597564166] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:21:00,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:21:00,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:21:00,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548184502] [2023-11-23 21:21:00,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:21:00,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:21:00,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:21:00,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:21:00,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:21:00,875 INFO L87 Difference]: Start difference. First operand 42507 states and 184933 transitions. Second operand has 3 states, 2 states have (on average 5.5) 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) [2023-11-23 21:21:02,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:21:02,296 INFO L93 Difference]: Finished difference Result 42115 states and 183526 transitions. [2023-11-23 21:21:02,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:21:02,297 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) 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 [2023-11-23 21:21:02,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:21:02,504 INFO L225 Difference]: With dead ends: 42115 [2023-11-23 21:21:02,505 INFO L226 Difference]: Without dead ends: 42115 [2023-11-23 21:21:02,505 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 [2023-11-23 21:21:02,506 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 38 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:21:02,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 54 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:21:02,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42115 states. [2023-11-23 21:21:04,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42115 to 42115. [2023-11-23 21:21:04,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42115 states, 42113 states have (on average 4.357941728207442) internal successors, (183526), 42114 states have internal predecessors, (183526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:21:04,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42115 states to 42115 states and 183526 transitions. [2023-11-23 21:21:04,286 INFO L78 Accepts]: Start accepts. Automaton has 42115 states and 183526 transitions. Word has length 11 [2023-11-23 21:21:04,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:21:04,286 INFO L495 AbstractCegarLoop]: Abstraction has 42115 states and 183526 transitions. [2023-11-23 21:21:04,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) 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) [2023-11-23 21:21:04,286 INFO L276 IsEmpty]: Start isEmpty. Operand 42115 states and 183526 transitions. [2023-11-23 21:21:04,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-23 21:21:04,302 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:21:04,302 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:21:04,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-23 21:21:04,302 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-23 21:21:04,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:21:04,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1649136896, now seen corresponding path program 1 times [2023-11-23 21:21:04,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:21:04,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895059801] [2023-11-23 21:21:04,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:21:04,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:21:04,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:21:05,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:21:05,251 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:21:05,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895059801] [2023-11-23 21:21:05,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895059801] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:21:05,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:21:05,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-23 21:21:05,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556500528] [2023-11-23 21:21:05,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:21:05,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 21:21:05,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:21:05,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 21:21:05,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-23 21:21:05,253 INFO L87 Difference]: Start difference. First operand 42115 states and 183526 transitions. Second operand has 9 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)