./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/13-privatized_04-priv_multi_true.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc 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_f920f267-33c1-4c0b-a525-22a892a1674d/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f920f267-33c1-4c0b-a525-22a892a1674d/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f920f267-33c1-4c0b-a525-22a892a1674d/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f920f267-33c1-4c0b-a525-22a892a1674d/bin/utaipan-verify-nQ1chXbOIh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/13-privatized_04-priv_multi_true.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f920f267-33c1-4c0b-a525-22a892a1674d/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f920f267-33c1-4c0b-a525-22a892a1674d/bin/utaipan-verify-nQ1chXbOIh --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 d5772eac83993f999ed7a0d2c72e283c734e18136b4020af8f8e407255c20c04 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 08:29:08,823 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 08:29:08,886 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f920f267-33c1-4c0b-a525-22a892a1674d/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-12-02 08:29:08,891 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 08:29:08,891 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 08:29:08,916 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 08:29:08,916 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 08:29:08,917 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 08:29:08,917 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 08:29:08,918 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 08:29:08,918 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 08:29:08,919 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 08:29:08,919 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 08:29:08,920 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 08:29:08,920 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 08:29:08,921 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 08:29:08,921 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 08:29:08,922 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 08:29:08,922 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 08:29:08,923 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 08:29:08,923 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 08:29:08,925 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 08:29:08,925 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-02 08:29:08,926 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-02 08:29:08,926 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 08:29:08,926 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 08:29:08,927 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 08:29:08,927 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 08:29:08,927 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 08:29:08,928 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-12-02 08:29:08,928 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-12-02 08:29:08,928 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-12-02 08:29:08,929 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 08:29:08,929 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 08:29:08,929 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 08:29:08,929 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 08:29:08,929 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 08:29:08,930 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 08:29:08,930 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 08:29:08,930 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 08:29:08,930 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 08:29:08,931 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 08:29:08,931 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 08:29:08,931 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 08:29:08,931 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 08:29:08,931 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 08:29:08,931 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 08:29:08,932 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 08:29:08,932 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_f920f267-33c1-4c0b-a525-22a892a1674d/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f920f267-33c1-4c0b-a525-22a892a1674d/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d5772eac83993f999ed7a0d2c72e283c734e18136b4020af8f8e407255c20c04 [2023-12-02 08:29:09,163 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 08:29:09,184 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 08:29:09,187 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 08:29:09,188 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 08:29:09,189 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 08:29:09,190 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f920f267-33c1-4c0b-a525-22a892a1674d/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/goblint-regression/13-privatized_04-priv_multi_true.i [2023-12-02 08:29:11,887 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 08:29:12,117 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 08:29:12,118 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f920f267-33c1-4c0b-a525-22a892a1674d/sv-benchmarks/c/goblint-regression/13-privatized_04-priv_multi_true.i [2023-12-02 08:29:12,136 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f920f267-33c1-4c0b-a525-22a892a1674d/bin/utaipan-verify-nQ1chXbOIh/data/359ea44e3/c97da9b883694eb98d61dbb3dbbc08df/FLAGab5fce8e6 [2023-12-02 08:29:12,150 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f920f267-33c1-4c0b-a525-22a892a1674d/bin/utaipan-verify-nQ1chXbOIh/data/359ea44e3/c97da9b883694eb98d61dbb3dbbc08df [2023-12-02 08:29:12,153 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 08:29:12,155 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 08:29:12,156 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 08:29:12,156 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 08:29:12,161 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 08:29:12,162 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:29:12" (1/1) ... [2023-12-02 08:29:12,163 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4144677f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:29:12, skipping insertion in model container [2023-12-02 08:29:12,163 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:29:12" (1/1) ... [2023-12-02 08:29:12,234 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 08:29:12,633 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 08:29:12,646 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 08:29:12,696 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 08:29:12,753 WARN L675 CHandler]: The function sleep is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 08:29:12,760 INFO L206 MainTranslator]: Completed translation [2023-12-02 08:29:12,760 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:29:12 WrapperNode [2023-12-02 08:29:12,760 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 08:29:12,761 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 08:29:12,762 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 08:29:12,762 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 08:29:12,768 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:29:12" (1/1) ... [2023-12-02 08:29:12,789 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:29:12" (1/1) ... [2023-12-02 08:29:12,816 INFO L138 Inliner]: procedures = 272, calls = 54, calls flagged for inlining = 5, calls inlined = 6, statements flattened = 121 [2023-12-02 08:29:12,817 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 08:29:12,817 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 08:29:12,817 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 08:29:12,818 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 08:29:12,826 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:29:12" (1/1) ... [2023-12-02 08:29:12,827 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:29:12" (1/1) ... [2023-12-02 08:29:12,832 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:29:12" (1/1) ... [2023-12-02 08:29:12,832 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:29:12" (1/1) ... [2023-12-02 08:29:12,846 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:29:12" (1/1) ... [2023-12-02 08:29:12,849 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:29:12" (1/1) ... [2023-12-02 08:29:12,855 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:29:12" (1/1) ... [2023-12-02 08:29:12,858 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:29:12" (1/1) ... [2023-12-02 08:29:12,865 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 08:29:12,866 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 08:29:12,866 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 08:29:12,866 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 08:29:12,867 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:29:12" (1/1) ... [2023-12-02 08:29:12,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 08:29:12,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f920f267-33c1-4c0b-a525-22a892a1674d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 08:29:12,900 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f920f267-33c1-4c0b-a525-22a892a1674d/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 08:29:12,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f920f267-33c1-4c0b-a525-22a892a1674d/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 08:29:12,929 INFO L130 BoogieDeclarations]: Found specification of procedure sleep [2023-12-02 08:29:12,929 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 08:29:12,929 INFO L130 BoogieDeclarations]: Found specification of procedure generate [2023-12-02 08:29:12,929 INFO L138 BoogieDeclarations]: Found implementation of procedure generate [2023-12-02 08:29:12,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 08:29:12,929 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-12-02 08:29:12,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 08:29:12,930 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-12-02 08:29:12,930 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 08:29:12,930 INFO L130 BoogieDeclarations]: Found specification of procedure dispose [2023-12-02 08:29:12,930 INFO L138 BoogieDeclarations]: Found implementation of procedure dispose [2023-12-02 08:29:12,930 INFO L130 BoogieDeclarations]: Found specification of procedure process [2023-12-02 08:29:12,930 INFO L138 BoogieDeclarations]: Found implementation of procedure process [2023-12-02 08:29:12,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 08:29:12,931 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 08:29:12,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 08:29:12,932 WARN L213 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-12-02 08:29:13,170 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 08:29:13,172 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 08:29:13,395 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 08:29:13,567 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 08:29:13,567 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-12-02 08:29:13,567 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:29:13 BoogieIcfgContainer [2023-12-02 08:29:13,567 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 08:29:13,570 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 08:29:13,570 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 08:29:13,573 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 08:29:13,574 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 08:29:12" (1/3) ... [2023-12-02 08:29:13,574 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4251ad51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:29:13, skipping insertion in model container [2023-12-02 08:29:13,574 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:29:12" (2/3) ... [2023-12-02 08:29:13,575 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4251ad51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:29:13, skipping insertion in model container [2023-12-02 08:29:13,575 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:29:13" (3/3) ... [2023-12-02 08:29:13,576 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_04-priv_multi_true.i [2023-12-02 08:29:13,594 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 08:29:13,595 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2023-12-02 08:29:13,595 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-02 08:29:13,644 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-12-02 08:29:13,674 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 82 places, 82 transitions, 176 flow [2023-12-02 08:29:15,139 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 34375 states, 34364 states have (on average 4.328192294261436) internal successors, (148734), 34374 states have internal predecessors, (148734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 08:29:15,158 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 08:29:15,164 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;@5274492, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 08:29:15,165 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-12-02 08:29:15,238 INFO L276 IsEmpty]: Start isEmpty. Operand has 34375 states, 34364 states have (on average 4.328192294261436) internal successors, (148734), 34374 states have internal predecessors, (148734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 08:29:15,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-12-02 08:29:15,243 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:29:15,243 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-12-02 08:29:15,244 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-12-02 08:29:15,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:29:15,249 INFO L85 PathProgramCache]: Analyzing trace with hash 14800, now seen corresponding path program 1 times [2023-12-02 08:29:15,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 08:29:15,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253901094] [2023-12-02 08:29:15,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:29:15,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 08:29:15,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:29:15,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 08:29:15,732 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 08:29:15,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253901094] [2023-12-02 08:29:15,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253901094] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 08:29:15,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 08:29:15,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-12-02 08:29:15,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833649867] [2023-12-02 08:29:15,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 08:29:15,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 08:29:15,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 08:29:15,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 08:29:15,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 08:29:15,878 INFO L87 Difference]: Start difference. First operand has 34375 states, 34364 states have (on average 4.328192294261436) internal successors, (148734), 34374 states have internal predecessors, (148734), 0 states have call successors, (0), 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) [2023-12-02 08:29:16,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 08:29:16,633 INFO L93 Difference]: Finished difference Result 26989 states and 111073 transitions. [2023-12-02 08:29:16,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 08:29:16,637 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 [2023-12-02 08:29:16,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 08:29:17,052 INFO L225 Difference]: With dead ends: 26989 [2023-12-02 08:29:17,052 INFO L226 Difference]: Without dead ends: 26989 [2023-12-02 08:29:17,054 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 [2023-12-02 08:29:17,058 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 66 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 08:29:17,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 37 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 08:29:17,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26989 states. [2023-12-02 08:29:18,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26989 to 26989. [2023-12-02 08:29:18,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26989 states, 26986 states have (on average 4.115949010598088) internal successors, (111073), 26988 states have internal predecessors, (111073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 08:29:18,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26989 states to 26989 states and 111073 transitions. [2023-12-02 08:29:18,670 INFO L78 Accepts]: Start accepts. Automaton has 26989 states and 111073 transitions. Word has length 2 [2023-12-02 08:29:18,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 08:29:18,671 INFO L495 AbstractCegarLoop]: Abstraction has 26989 states and 111073 transitions. [2023-12-02 08:29:18,671 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) [2023-12-02 08:29:18,671 INFO L276 IsEmpty]: Start isEmpty. Operand 26989 states and 111073 transitions. [2023-12-02 08:29:18,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-12-02 08:29:18,671 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:29:18,671 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-12-02 08:29:18,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 08:29:18,672 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-12-02 08:29:18,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:29:18,673 INFO L85 PathProgramCache]: Analyzing trace with hash 14801, now seen corresponding path program 1 times [2023-12-02 08:29:18,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 08:29:18,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012961184] [2023-12-02 08:29:18,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:29:18,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 08:29:18,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:29:18,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 08:29:18,977 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 08:29:18,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012961184] [2023-12-02 08:29:18,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012961184] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 08:29:18,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 08:29:18,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-12-02 08:29:18,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784950068] [2023-12-02 08:29:18,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 08:29:18,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 08:29:18,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 08:29:18,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 08:29:18,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 08:29:18,981 INFO L87 Difference]: Start difference. First operand 26989 states and 111073 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) [2023-12-02 08:29:19,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 08:29:19,290 INFO L93 Difference]: Finished difference Result 26988 states and 111072 transitions. [2023-12-02 08:29:19,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 08:29:19,291 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 [2023-12-02 08:29:19,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 08:29:19,423 INFO L225 Difference]: With dead ends: 26988 [2023-12-02 08:29:19,423 INFO L226 Difference]: Without dead ends: 26988 [2023-12-02 08:29:19,423 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 [2023-12-02 08:29:19,425 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 65 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 08:29:19,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 38 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 08:29:19,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26988 states. [2023-12-02 08:29:20,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26988 to 26988. [2023-12-02 08:29:20,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26988 states, 26986 states have (on average 4.115911954346698) internal successors, (111072), 26987 states have internal predecessors, (111072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 08:29:20,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26988 states to 26988 states and 111072 transitions. [2023-12-02 08:29:20,461 INFO L78 Accepts]: Start accepts. Automaton has 26988 states and 111072 transitions. Word has length 2 [2023-12-02 08:29:20,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 08:29:20,461 INFO L495 AbstractCegarLoop]: Abstraction has 26988 states and 111072 transitions. [2023-12-02 08:29:20,462 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) [2023-12-02 08:29:20,462 INFO L276 IsEmpty]: Start isEmpty. Operand 26988 states and 111072 transitions. [2023-12-02 08:29:20,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-12-02 08:29:20,462 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:29:20,462 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-12-02 08:29:20,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 08:29:20,463 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-12-02 08:29:20,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:29:20,464 INFO L85 PathProgramCache]: Analyzing trace with hash 441396154, now seen corresponding path program 1 times [2023-12-02 08:29:20,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 08:29:20,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751948215] [2023-12-02 08:29:20,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:29:20,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 08:29:20,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:29:20,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 08:29:20,742 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 08:29:20,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751948215] [2023-12-02 08:29:20,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751948215] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 08:29:20,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 08:29:20,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-12-02 08:29:20,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64744470] [2023-12-02 08:29:20,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 08:29:20,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 08:29:20,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 08:29:20,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 08:29:20,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 08:29:20,745 INFO L87 Difference]: Start difference. First operand 26988 states and 111072 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) [2023-12-02 08:29:21,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 08:29:21,179 INFO L93 Difference]: Finished difference Result 26981 states and 111058 transitions. [2023-12-02 08:29:21,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 08:29:21,180 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 [2023-12-02 08:29:21,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 08:29:21,309 INFO L225 Difference]: With dead ends: 26981 [2023-12-02 08:29:21,309 INFO L226 Difference]: Without dead ends: 26981 [2023-12-02 08:29:21,309 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 [2023-12-02 08:29:21,310 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 61 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 08:29:21,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 36 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 08:29:21,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26981 states. [2023-12-02 08:29:22,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26981 to 26981. [2023-12-02 08:29:22,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26981 states, 26980 states have (on average 4.116308376575241) internal successors, (111058), 26980 states have internal predecessors, (111058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 08:29:22,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26981 states to 26981 states and 111058 transitions. [2023-12-02 08:29:22,242 INFO L78 Accepts]: Start accepts. Automaton has 26981 states and 111058 transitions. Word has length 5 [2023-12-02 08:29:22,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 08:29:22,242 INFO L495 AbstractCegarLoop]: Abstraction has 26981 states and 111058 transitions. [2023-12-02 08:29:22,242 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) [2023-12-02 08:29:22,242 INFO L276 IsEmpty]: Start isEmpty. Operand 26981 states and 111058 transitions. [2023-12-02 08:29:22,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-12-02 08:29:22,242 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:29:22,243 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-12-02 08:29:22,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 08:29:22,243 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-12-02 08:29:22,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:29:22,243 INFO L85 PathProgramCache]: Analyzing trace with hash 441396155, now seen corresponding path program 1 times [2023-12-02 08:29:22,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 08:29:22,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582154461] [2023-12-02 08:29:22,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:29:22,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 08:29:22,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:29:22,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 08:29:22,392 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 08:29:22,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582154461] [2023-12-02 08:29:22,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582154461] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 08:29:22,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 08:29:22,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-12-02 08:29:22,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923829312] [2023-12-02 08:29:22,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 08:29:22,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 08:29:22,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 08:29:22,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 08:29:22,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 08:29:22,394 INFO L87 Difference]: Start difference. First operand 26981 states and 111058 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) [2023-12-02 08:29:22,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 08:29:22,713 INFO L93 Difference]: Finished difference Result 26974 states and 111044 transitions. [2023-12-02 08:29:22,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 08:29:22,714 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 [2023-12-02 08:29:22,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 08:29:23,016 INFO L225 Difference]: With dead ends: 26974 [2023-12-02 08:29:23,016 INFO L226 Difference]: Without dead ends: 26974 [2023-12-02 08:29:23,017 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 [2023-12-02 08:29:23,018 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 60 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 08:29:23,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 37 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 08:29:23,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26974 states. [2023-12-02 08:29:23,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26974 to 26974. [2023-12-02 08:29:23,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26974 states, 26974 states have (on average 4.116704975161267) internal successors, (111044), 26973 states have internal predecessors, (111044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 08:29:23,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26974 states to 26974 states and 111044 transitions. [2023-12-02 08:29:23,725 INFO L78 Accepts]: Start accepts. Automaton has 26974 states and 111044 transitions. Word has length 5 [2023-12-02 08:29:23,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 08:29:23,725 INFO L495 AbstractCegarLoop]: Abstraction has 26974 states and 111044 transitions. [2023-12-02 08:29:23,726 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) [2023-12-02 08:29:23,726 INFO L276 IsEmpty]: Start isEmpty. Operand 26974 states and 111044 transitions. [2023-12-02 08:29:23,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-12-02 08:29:23,726 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:29:23,726 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 08:29:23,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-02 08:29:23,726 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-12-02 08:29:23,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:29:23,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1556548922, now seen corresponding path program 1 times [2023-12-02 08:29:23,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 08:29:23,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903187990] [2023-12-02 08:29:23,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:29:23,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 08:29:23,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:29:23,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 08:29:23,812 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 08:29:23,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903187990] [2023-12-02 08:29:23,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903187990] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 08:29:23,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 08:29:23,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-12-02 08:29:23,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101790378] [2023-12-02 08:29:23,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 08:29:23,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 08:29:23,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 08:29:23,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 08:29:23,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 08:29:23,814 INFO L87 Difference]: Start difference. First operand 26974 states and 111044 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 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) [2023-12-02 08:29:24,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 08:29:24,122 INFO L93 Difference]: Finished difference Result 26876 states and 110743 transitions. [2023-12-02 08:29:24,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 08:29:24,123 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 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 [2023-12-02 08:29:24,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 08:29:24,371 INFO L225 Difference]: With dead ends: 26876 [2023-12-02 08:29:24,372 INFO L226 Difference]: Without dead ends: 26876 [2023-12-02 08:29:24,372 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 [2023-12-02 08:29:24,373 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 56 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 08:29:24,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 35 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 08:29:24,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26876 states. [2023-12-02 08:29:24,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26876 to 26876. [2023-12-02 08:29:25,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26876 states, 26876 states have (on average 4.120516445899687) internal successors, (110743), 26875 states have internal predecessors, (110743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 08:29:25,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26876 states to 26876 states and 110743 transitions. [2023-12-02 08:29:25,157 INFO L78 Accepts]: Start accepts. Automaton has 26876 states and 110743 transitions. Word has length 8 [2023-12-02 08:29:25,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 08:29:25,158 INFO L495 AbstractCegarLoop]: Abstraction has 26876 states and 110743 transitions. [2023-12-02 08:29:25,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 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) [2023-12-02 08:29:25,158 INFO L276 IsEmpty]: Start isEmpty. Operand 26876 states and 110743 transitions. [2023-12-02 08:29:25,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-12-02 08:29:25,159 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:29:25,159 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 08:29:25,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-02 08:29:25,159 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-12-02 08:29:25,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:29:25,160 INFO L85 PathProgramCache]: Analyzing trace with hash -1556548921, now seen corresponding path program 1 times [2023-12-02 08:29:25,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 08:29:25,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666326730] [2023-12-02 08:29:25,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:29:25,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 08:29:25,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:29:25,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 08:29:25,263 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 08:29:25,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666326730] [2023-12-02 08:29:25,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666326730] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 08:29:25,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 08:29:25,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-12-02 08:29:25,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609515430] [2023-12-02 08:29:25,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 08:29:25,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 08:29:25,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 08:29:25,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 08:29:25,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 08:29:25,265 INFO L87 Difference]: Start difference. First operand 26876 states and 110743 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 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) [2023-12-02 08:29:25,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 08:29:25,570 INFO L93 Difference]: Finished difference Result 26778 states and 110442 transitions. [2023-12-02 08:29:25,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 08:29:25,571 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 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 [2023-12-02 08:29:25,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 08:29:25,687 INFO L225 Difference]: With dead ends: 26778 [2023-12-02 08:29:25,687 INFO L226 Difference]: Without dead ends: 26778 [2023-12-02 08:29:25,687 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 [2023-12-02 08:29:25,688 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 55 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 08:29:25,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 36 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 08:29:25,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26778 states. [2023-12-02 08:29:26,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26778 to 26778. [2023-12-02 08:29:26,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26778 states, 26778 states have (on average 4.124355814474569) internal successors, (110442), 26777 states have internal predecessors, (110442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 08:29:26,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26778 states to 26778 states and 110442 transitions. [2023-12-02 08:29:26,553 INFO L78 Accepts]: Start accepts. Automaton has 26778 states and 110442 transitions. Word has length 8 [2023-12-02 08:29:26,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 08:29:26,554 INFO L495 AbstractCegarLoop]: Abstraction has 26778 states and 110442 transitions. [2023-12-02 08:29:26,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 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) [2023-12-02 08:29:26,554 INFO L276 IsEmpty]: Start isEmpty. Operand 26778 states and 110442 transitions. [2023-12-02 08:29:26,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-12-02 08:29:26,556 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:29:26,556 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 08:29:26,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-02 08:29:26,556 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-12-02 08:29:26,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:29:26,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1522591545, now seen corresponding path program 1 times [2023-12-02 08:29:26,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 08:29:26,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213090046] [2023-12-02 08:29:26,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:29:26,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 08:29:26,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:29:26,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 08:29:26,624 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 08:29:26,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213090046] [2023-12-02 08:29:26,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213090046] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 08:29:26,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 08:29:26,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 08:29:26,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485105393] [2023-12-02 08:29:26,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 08:29:26,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 08:29:26,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 08:29:26,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 08:29:26,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 08:29:26,625 INFO L87 Difference]: Start difference. First operand 26778 states and 110442 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 08:29:27,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 08:29:27,176 INFO L93 Difference]: Finished difference Result 47358 states and 195604 transitions. [2023-12-02 08:29:27,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 08:29:27,176 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-12-02 08:29:27,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 08:29:27,348 INFO L225 Difference]: With dead ends: 47358 [2023-12-02 08:29:27,348 INFO L226 Difference]: Without dead ends: 47358 [2023-12-02 08:29:27,349 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 08:29:27,350 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 51 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 08:29:27,350 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 60 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 08:29:27,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47358 states. [2023-12-02 08:29:28,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47358 to 28248. [2023-12-02 08:29:28,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28248 states, 28248 states have (on average 4.1250708014726705) internal successors, (116525), 28247 states have internal predecessors, (116525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 08:29:28,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28248 states to 28248 states and 116525 transitions. [2023-12-02 08:29:28,569 INFO L78 Accepts]: Start accepts. Automaton has 28248 states and 116525 transitions. Word has length 12 [2023-12-02 08:29:28,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 08:29:28,570 INFO L495 AbstractCegarLoop]: Abstraction has 28248 states and 116525 transitions. [2023-12-02 08:29:28,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 08:29:28,570 INFO L276 IsEmpty]: Start isEmpty. Operand 28248 states and 116525 transitions. [2023-12-02 08:29:28,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-02 08:29:28,576 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:29:28,576 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 08:29:28,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-02 08:29:28,577 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-12-02 08:29:28,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:29:28,577 INFO L85 PathProgramCache]: Analyzing trace with hash 681078487, now seen corresponding path program 1 times [2023-12-02 08:29:28,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 08:29:28,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771615506] [2023-12-02 08:29:28,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:29:28,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 08:29:28,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:29:28,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 08:29:28,795 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 08:29:28,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771615506] [2023-12-02 08:29:28,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771615506] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 08:29:28,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 08:29:28,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 08:29:28,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56227132] [2023-12-02 08:29:28,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 08:29:28,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 08:29:28,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 08:29:28,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 08:29:28,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 08:29:28,797 INFO L87 Difference]: Start difference. First operand 28248 states and 116525 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 08:29:29,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 08:29:29,604 INFO L93 Difference]: Finished difference Result 39147 states and 162018 transitions. [2023-12-02 08:29:29,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 08:29:29,605 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-12-02 08:29:29,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 08:29:29,801 INFO L225 Difference]: With dead ends: 39147 [2023-12-02 08:29:29,801 INFO L226 Difference]: Without dead ends: 39147 [2023-12-02 08:29:29,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 08:29:29,802 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 107 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 08:29:29,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 87 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 08:29:29,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39147 states. [2023-12-02 08:29:30,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39147 to 37392. [2023-12-02 08:29:30,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37392 states, 37392 states have (on average 4.151716944801027) internal successors, (155241), 37391 states have internal predecessors, (155241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 08:29:31,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37392 states to 37392 states and 155241 transitions. [2023-12-02 08:29:31,108 INFO L78 Accepts]: Start accepts. Automaton has 37392 states and 155241 transitions. Word has length 18 [2023-12-02 08:29:31,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 08:29:31,108 INFO L495 AbstractCegarLoop]: Abstraction has 37392 states and 155241 transitions. [2023-12-02 08:29:31,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 08:29:31,109 INFO L276 IsEmpty]: Start isEmpty. Operand 37392 states and 155241 transitions. [2023-12-02 08:29:31,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-02 08:29:31,114 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:29:31,114 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 08:29:31,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-02 08:29:31,114 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting disposeErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-12-02 08:29:31,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:29:31,115 INFO L85 PathProgramCache]: Analyzing trace with hash 92955924, now seen corresponding path program 1 times [2023-12-02 08:29:31,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 08:29:31,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572426388] [2023-12-02 08:29:31,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:29:31,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 08:29:31,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:29:31,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 08:29:31,307 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 08:29:31,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572426388] [2023-12-02 08:29:31,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572426388] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 08:29:31,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 08:29:31,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 08:29:31,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414821852] [2023-12-02 08:29:31,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 08:29:31,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 08:29:31,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 08:29:31,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 08:29:31,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 08:29:31,310 INFO L87 Difference]: Start difference. First operand 37392 states and 155241 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 08:29:32,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 08:29:32,530 INFO L93 Difference]: Finished difference Result 72911 states and 301404 transitions. [2023-12-02 08:29:32,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 08:29:32,530 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2023-12-02 08:29:32,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 08:29:32,802 INFO L225 Difference]: With dead ends: 72911 [2023-12-02 08:29:32,802 INFO L226 Difference]: Without dead ends: 72911 [2023-12-02 08:29:32,803 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 08:29:32,803 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 249 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 08:29:32,803 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 181 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 331 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 08:29:32,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72911 states. [2023-12-02 08:29:34,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72911 to 51215. [2023-12-02 08:29:34,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51215 states, 51215 states have (on average 4.115981646002147) internal successors, (210800), 51214 states have internal predecessors, (210800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 08:29:34,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51215 states to 51215 states and 210800 transitions. [2023-12-02 08:29:34,847 INFO L78 Accepts]: Start accepts. Automaton has 51215 states and 210800 transitions. Word has length 19 [2023-12-02 08:29:34,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 08:29:34,848 INFO L495 AbstractCegarLoop]: Abstraction has 51215 states and 210800 transitions. [2023-12-02 08:29:34,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 08:29:34,848 INFO L276 IsEmpty]: Start isEmpty. Operand 51215 states and 210800 transitions. [2023-12-02 08:29:34,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-02 08:29:34,866 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:29:34,866 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, 1] [2023-12-02 08:29:34,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-02 08:29:34,867 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-12-02 08:29:34,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:29:34,867 INFO L85 PathProgramCache]: Analyzing trace with hash 246348021, now seen corresponding path program 1 times [2023-12-02 08:29:34,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 08:29:34,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535058036] [2023-12-02 08:29:34,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:29:34,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 08:29:34,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:29:35,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 08:29:35,117 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 08:29:35,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535058036] [2023-12-02 08:29:35,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535058036] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 08:29:35,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 08:29:35,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 08:29:35,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168514101] [2023-12-02 08:29:35,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 08:29:35,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 08:29:35,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 08:29:35,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 08:29:35,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 08:29:35,119 INFO L87 Difference]: Start difference. First operand 51215 states and 210800 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 08:29:35,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 08:29:35,816 INFO L93 Difference]: Finished difference Result 48656 states and 198780 transitions. [2023-12-02 08:29:35,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 08:29:35,817 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 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 22 [2023-12-02 08:29:35,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 08:29:36,060 INFO L225 Difference]: With dead ends: 48656 [2023-12-02 08:29:36,060 INFO L226 Difference]: Without dead ends: 48656 [2023-12-02 08:29:36,061 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 08:29:36,062 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 192 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 08:29:36,062 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 126 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 08:29:36,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48656 states. [2023-12-02 08:29:37,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48656 to 43320. [2023-12-02 08:29:37,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43320 states, 43320 states have (on average 4.094506001846722) internal successors, (177374), 43319 states have internal predecessors, (177374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 08:29:37,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43320 states to 43320 states and 177374 transitions. [2023-12-02 08:29:37,842 INFO L78 Accepts]: Start accepts. Automaton has 43320 states and 177374 transitions. Word has length 22 [2023-12-02 08:29:37,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 08:29:37,842 INFO L495 AbstractCegarLoop]: Abstraction has 43320 states and 177374 transitions. [2023-12-02 08:29:37,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 08:29:37,843 INFO L276 IsEmpty]: Start isEmpty. Operand 43320 states and 177374 transitions. [2023-12-02 08:29:37,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-02 08:29:37,850 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:29:37,851 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, 1, 1] [2023-12-02 08:29:37,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-02 08:29:37,851 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-12-02 08:29:37,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:29:37,851 INFO L85 PathProgramCache]: Analyzing trace with hash -1734071571, now seen corresponding path program 1 times [2023-12-02 08:29:37,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 08:29:37,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908786258] [2023-12-02 08:29:37,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:29:37,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 08:29:37,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:29:37,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 08:29:37,928 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 08:29:37,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908786258] [2023-12-02 08:29:37,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908786258] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 08:29:37,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 08:29:37,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 08:29:37,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563333990] [2023-12-02 08:29:37,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 08:29:37,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 08:29:37,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 08:29:37,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 08:29:37,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 08:29:37,930 INFO L87 Difference]: Start difference. First operand 43320 states and 177374 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 08:29:38,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 08:29:38,439 INFO L93 Difference]: Finished difference Result 76454 states and 305933 transitions. [2023-12-02 08:29:38,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 08:29:38,439 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2023-12-02 08:29:38,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 08:29:38,994 INFO L225 Difference]: With dead ends: 76454 [2023-12-02 08:29:38,994 INFO L226 Difference]: Without dead ends: 76454 [2023-12-02 08:29:38,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 08:29:38,995 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 45 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 08:29:38,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 64 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 08:29:39,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76454 states. [2023-12-02 08:29:40,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76454 to 68462. [2023-12-02 08:29:40,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68462 states, 68460 states have (on average 4.030251241600935) internal successors, (275911), 68461 states have internal predecessors, (275911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 08:29:41,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68462 states to 68462 states and 275911 transitions. [2023-12-02 08:29:41,149 INFO L78 Accepts]: Start accepts. Automaton has 68462 states and 275911 transitions. Word has length 23 [2023-12-02 08:29:41,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 08:29:41,150 INFO L495 AbstractCegarLoop]: Abstraction has 68462 states and 275911 transitions. [2023-12-02 08:29:41,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 08:29:41,150 INFO L276 IsEmpty]: Start isEmpty. Operand 68462 states and 275911 transitions. [2023-12-02 08:29:41,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-02 08:29:41,158 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:29:41,158 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, 1, 1] [2023-12-02 08:29:41,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-02 08:29:41,159 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-12-02 08:29:41,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:29:41,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1510262939, now seen corresponding path program 1 times [2023-12-02 08:29:41,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 08:29:41,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800016350] [2023-12-02 08:29:41,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:29:41,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 08:29:41,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:29:41,252 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 08:29:41,253 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 08:29:41,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800016350] [2023-12-02 08:29:41,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800016350] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 08:29:41,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [697846130] [2023-12-02 08:29:41,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:29:41,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 08:29:41,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f920f267-33c1-4c0b-a525-22a892a1674d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 08:29:41,259 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f920f267-33c1-4c0b-a525-22a892a1674d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 08:29:41,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f920f267-33c1-4c0b-a525-22a892a1674d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 08:29:41,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:29:41,408 INFO L262 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 08:29:41,413 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 08:29:41,461 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 08:29:41,461 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 08:29:41,499 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 08:29:41,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [697846130] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 08:29:41,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1162001163] [2023-12-02 08:29:41,509 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-12-02 08:29:41,511 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 08:29:41,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-12-02 08:29:41,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108505138] [2023-12-02 08:29:41,512 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 08:29:41,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 08:29:41,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 08:29:41,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 08:29:41,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-12-02 08:29:41,513 INFO L87 Difference]: Start difference. First operand 68462 states and 275911 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 08:29:44,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 08:29:44,227 INFO L93 Difference]: Finished difference Result 223226 states and 897235 transitions. [2023-12-02 08:29:44,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 08:29:44,227 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2023-12-02 08:29:44,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 08:29:45,750 INFO L225 Difference]: With dead ends: 223226 [2023-12-02 08:29:45,751 INFO L226 Difference]: Without dead ends: 223226 [2023-12-02 08:29:45,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-12-02 08:29:45,752 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 225 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 08:29:45,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 167 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 08:29:46,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223226 states. [2023-12-02 08:29:51,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223226 to 195857. [2023-12-02 08:29:51,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195857 states, 195855 states have (on average 4.0624237318424345) internal successors, (795646), 195856 states have internal predecessors, (795646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 08:29:53,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195857 states to 195857 states and 795646 transitions. [2023-12-02 08:29:53,086 INFO L78 Accepts]: Start accepts. Automaton has 195857 states and 795646 transitions. Word has length 23 [2023-12-02 08:29:53,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 08:29:53,086 INFO L495 AbstractCegarLoop]: Abstraction has 195857 states and 795646 transitions. [2023-12-02 08:29:53,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 08:29:53,087 INFO L276 IsEmpty]: Start isEmpty. Operand 195857 states and 795646 transitions. [2023-12-02 08:29:53,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-02 08:29:53,103 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:29:53,103 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, 1, 1, 1, 1, 1] [2023-12-02 08:29:53,109 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f920f267-33c1-4c0b-a525-22a892a1674d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 08:29:53,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f920f267-33c1-4c0b-a525-22a892a1674d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-02 08:29:53,304 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting disposeErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-12-02 08:29:53,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:29:53,304 INFO L85 PathProgramCache]: Analyzing trace with hash 2137201762, now seen corresponding path program 1 times [2023-12-02 08:29:53,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 08:29:53,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769449295] [2023-12-02 08:29:53,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:29:53,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 08:29:53,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:29:53,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 08:29:53,421 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 08:29:53,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769449295] [2023-12-02 08:29:53,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769449295] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 08:29:53,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 08:29:53,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 08:29:53,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303280372] [2023-12-02 08:29:53,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 08:29:53,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 08:29:53,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 08:29:53,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 08:29:53,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 08:29:53,423 INFO L87 Difference]: Start difference. First operand 195857 states and 795646 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 08:29:56,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 08:29:56,376 INFO L93 Difference]: Finished difference Result 285887 states and 1148119 transitions. [2023-12-02 08:29:56,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 08:29:56,385 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2023-12-02 08:29:56,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 08:29:57,861 INFO L225 Difference]: With dead ends: 285887 [2023-12-02 08:29:57,861 INFO L226 Difference]: Without dead ends: 285887 [2023-12-02 08:29:57,861 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 08:29:57,862 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 42 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 08:29:57,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 65 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 08:29:58,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285887 states. [2023-12-02 08:30:05,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285887 to 269293. [2023-12-02 08:30:05,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269293 states, 269285 states have (on average 4.020264775238131) internal successors, (1082597), 269292 states have internal predecessors, (1082597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 08:30:07,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269293 states to 269293 states and 1082597 transitions. [2023-12-02 08:30:07,519 INFO L78 Accepts]: Start accepts. Automaton has 269293 states and 1082597 transitions. Word has length 26 [2023-12-02 08:30:07,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 08:30:07,519 INFO L495 AbstractCegarLoop]: Abstraction has 269293 states and 1082597 transitions. [2023-12-02 08:30:07,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 08:30:07,520 INFO L276 IsEmpty]: Start isEmpty. Operand 269293 states and 1082597 transitions. [2023-12-02 08:30:07,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-02 08:30:07,535 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:30:07,536 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, 1, 1, 1, 1, 1] [2023-12-02 08:30:07,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-02 08:30:07,536 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-12-02 08:30:07,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:30:07,536 INFO L85 PathProgramCache]: Analyzing trace with hash 1498443287, now seen corresponding path program 1 times [2023-12-02 08:30:07,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 08:30:07,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70093908] [2023-12-02 08:30:07,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:30:07,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 08:30:07,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:30:07,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 08:30:07,730 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 08:30:07,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70093908] [2023-12-02 08:30:07,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70093908] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 08:30:07,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 08:30:07,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 08:30:07,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125905082] [2023-12-02 08:30:07,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 08:30:07,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 08:30:07,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 08:30:07,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 08:30:07,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 08:30:07,732 INFO L87 Difference]: Start difference. First operand 269293 states and 1082597 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 08:30:09,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 08:30:09,199 INFO L93 Difference]: Finished difference Result 94968 states and 351259 transitions. [2023-12-02 08:30:09,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 08:30:09,200 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2023-12-02 08:30:09,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 08:30:09,553 INFO L225 Difference]: With dead ends: 94968 [2023-12-02 08:30:09,553 INFO L226 Difference]: Without dead ends: 94968 [2023-12-02 08:30:09,553 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 08:30:09,554 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 76 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 08:30:09,554 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 53 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 08:30:09,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94968 states. [2023-12-02 08:30:11,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94968 to 63059. [2023-12-02 08:30:11,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63059 states, 63055 states have (on average 3.7336610895250177) internal successors, (235426), 63058 states have internal predecessors, (235426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 08:30:11,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63059 states to 63059 states and 235426 transitions. [2023-12-02 08:30:11,931 INFO L78 Accepts]: Start accepts. Automaton has 63059 states and 235426 transitions. Word has length 26 [2023-12-02 08:30:11,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 08:30:11,931 INFO L495 AbstractCegarLoop]: Abstraction has 63059 states and 235426 transitions. [2023-12-02 08:30:11,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 08:30:11,931 INFO L276 IsEmpty]: Start isEmpty. Operand 63059 states and 235426 transitions. [2023-12-02 08:30:11,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-12-02 08:30:11,939 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:30:11,939 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, 1, 1, 1, 1, 1, 1] [2023-12-02 08:30:11,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-02 08:30:11,940 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting disposeErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-12-02 08:30:11,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:30:11,940 INFO L85 PathProgramCache]: Analyzing trace with hash -473149702, now seen corresponding path program 1 times [2023-12-02 08:30:11,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 08:30:11,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531152878] [2023-12-02 08:30:11,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:30:11,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 08:30:11,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:30:12,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 08:30:12,100 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 08:30:12,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531152878] [2023-12-02 08:30:12,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531152878] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 08:30:12,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 08:30:12,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 08:30:12,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59001378] [2023-12-02 08:30:12,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 08:30:12,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 08:30:12,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 08:30:12,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 08:30:12,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-02 08:30:12,102 INFO L87 Difference]: Start difference. First operand 63059 states and 235426 transitions. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 08:30:12,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 08:30:12,734 INFO L93 Difference]: Finished difference Result 59022 states and 212408 transitions. [2023-12-02 08:30:12,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 08:30:12,735 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2023-12-02 08:30:12,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 08:30:12,921 INFO L225 Difference]: With dead ends: 59022 [2023-12-02 08:30:12,921 INFO L226 Difference]: Without dead ends: 56987 [2023-12-02 08:30:12,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2023-12-02 08:30:12,922 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 242 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 08:30:12,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 179 Invalid, 386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 380 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 08:30:13,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56987 states. [2023-12-02 08:30:13,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56987 to 32943. [2023-12-02 08:30:14,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32943 states, 32941 states have (on average 3.6070550377948454) internal successors, (118820), 32942 states have internal predecessors, (118820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 08:30:14,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32943 states to 32943 states and 118820 transitions. [2023-12-02 08:30:14,107 INFO L78 Accepts]: Start accepts. Automaton has 32943 states and 118820 transitions. Word has length 27 [2023-12-02 08:30:14,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 08:30:14,108 INFO L495 AbstractCegarLoop]: Abstraction has 32943 states and 118820 transitions. [2023-12-02 08:30:14,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 08:30:14,108 INFO L276 IsEmpty]: Start isEmpty. Operand 32943 states and 118820 transitions. [2023-12-02 08:30:14,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-12-02 08:30:14,119 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:30:14,119 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, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 08:30:14,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-02 08:30:14,119 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-12-02 08:30:14,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:30:14,120 INFO L85 PathProgramCache]: Analyzing trace with hash -1183166058, now seen corresponding path program 1 times [2023-12-02 08:30:14,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 08:30:14,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968231850] [2023-12-02 08:30:14,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:30:14,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 08:30:14,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:30:14,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 08:30:14,260 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 08:30:14,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968231850] [2023-12-02 08:30:14,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968231850] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 08:30:14,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 08:30:14,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 08:30:14,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987160903] [2023-12-02 08:30:14,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 08:30:14,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 08:30:14,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 08:30:14,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 08:30:14,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 08:30:14,262 INFO L87 Difference]: Start difference. First operand 32943 states and 118820 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 08:30:14,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 08:30:14,703 INFO L93 Difference]: Finished difference Result 53092 states and 189992 transitions. [2023-12-02 08:30:14,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 08:30:14,704 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2023-12-02 08:30:14,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 08:30:15,183 INFO L225 Difference]: With dead ends: 53092 [2023-12-02 08:30:15,183 INFO L226 Difference]: Without dead ends: 53092 [2023-12-02 08:30:15,183 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-02 08:30:15,184 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 94 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 08:30:15,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 112 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 08:30:15,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53092 states. [2023-12-02 08:30:16,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53092 to 41501. [2023-12-02 08:30:16,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41501 states, 41499 states have (on average 3.6347381864623243) internal successors, (150838), 41500 states have internal predecessors, (150838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 08:30:16,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41501 states to 41501 states and 150838 transitions. [2023-12-02 08:30:16,522 INFO L78 Accepts]: Start accepts. Automaton has 41501 states and 150838 transitions. Word has length 28 [2023-12-02 08:30:16,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 08:30:16,522 INFO L495 AbstractCegarLoop]: Abstraction has 41501 states and 150838 transitions. [2023-12-02 08:30:16,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 08:30:16,522 INFO L276 IsEmpty]: Start isEmpty. Operand 41501 states and 150838 transitions. [2023-12-02 08:30:16,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-12-02 08:30:16,546 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:30:16,546 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 08:30:16,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-02 08:30:16,547 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-12-02 08:30:16,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:30:16,547 INFO L85 PathProgramCache]: Analyzing trace with hash 2042453299, now seen corresponding path program 1 times [2023-12-02 08:30:16,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 08:30:16,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776550454] [2023-12-02 08:30:16,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:30:16,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 08:30:16,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:30:16,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 08:30:16,764 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 08:30:16,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776550454] [2023-12-02 08:30:16,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776550454] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 08:30:16,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 08:30:16,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 08:30:16,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688544245] [2023-12-02 08:30:16,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 08:30:16,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 08:30:16,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 08:30:16,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 08:30:16,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-02 08:30:16,766 INFO L87 Difference]: Start difference. First operand 41501 states and 150838 transitions. Second operand has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 6 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 08:30:17,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 08:30:17,106 INFO L93 Difference]: Finished difference Result 40733 states and 147430 transitions. [2023-12-02 08:30:17,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 08:30:17,106 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 6 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2023-12-02 08:30:17,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 08:30:17,219 INFO L225 Difference]: With dead ends: 40733 [2023-12-02 08:30:17,219 INFO L226 Difference]: Without dead ends: 40733 [2023-12-02 08:30:17,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-12-02 08:30:17,220 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 181 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 08:30:17,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 87 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 08:30:17,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40733 states. [2023-12-02 08:30:17,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40733 to 25263. [2023-12-02 08:30:17,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25263 states, 25263 states have (on average 3.612714246130705) internal successors, (91268), 25262 states have internal predecessors, (91268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 08:30:18,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25263 states to 25263 states and 91268 transitions. [2023-12-02 08:30:18,136 INFO L78 Accepts]: Start accepts. Automaton has 25263 states and 91268 transitions. Word has length 33 [2023-12-02 08:30:18,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 08:30:18,136 INFO L495 AbstractCegarLoop]: Abstraction has 25263 states and 91268 transitions. [2023-12-02 08:30:18,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 6 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 08:30:18,136 INFO L276 IsEmpty]: Start isEmpty. Operand 25263 states and 91268 transitions. [2023-12-02 08:30:18,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-12-02 08:30:18,174 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:30:18,174 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 08:30:18,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-02 08:30:18,174 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-12-02 08:30:18,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:30:18,175 INFO L85 PathProgramCache]: Analyzing trace with hash 1079943111, now seen corresponding path program 2 times [2023-12-02 08:30:18,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 08:30:18,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623169132] [2023-12-02 08:30:18,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:30:18,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 08:30:18,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:30:18,326 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 08:30:18,326 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 08:30:18,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623169132] [2023-12-02 08:30:18,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623169132] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 08:30:18,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [26751435] [2023-12-02 08:30:18,327 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 08:30:18,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 08:30:18,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f920f267-33c1-4c0b-a525-22a892a1674d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 08:30:18,328 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f920f267-33c1-4c0b-a525-22a892a1674d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 08:30:18,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f920f267-33c1-4c0b-a525-22a892a1674d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 08:30:18,477 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-12-02 08:30:18,477 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 08:30:18,478 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-02 08:30:18,482 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 08:30:19,224 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-12-02 08:30:19,224 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 08:30:19,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [26751435] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 08:30:19,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 08:30:19,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 9 [2023-12-02 08:30:19,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401656293] [2023-12-02 08:30:19,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 08:30:19,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 08:30:19,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 08:30:19,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 08:30:19,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-12-02 08:30:19,226 INFO L87 Difference]: Start difference. First operand 25263 states and 91268 transitions. Second operand has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 08:30:19,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 08:30:19,685 INFO L93 Difference]: Finished difference Result 24383 states and 87884 transitions. [2023-12-02 08:30:19,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 08:30:19,686 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2023-12-02 08:30:19,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 08:30:19,686 INFO L225 Difference]: With dead ends: 24383 [2023-12-02 08:30:19,686 INFO L226 Difference]: Without dead ends: 0 [2023-12-02 08:30:19,686 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-12-02 08:30:19,687 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 58 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 08:30:19,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 40 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 118 Invalid, 2 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 08:30:19,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-02 08:30:19,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-02 08:30:19,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 08:30:19,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-02 08:30:19,688 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 56 [2023-12-02 08:30:19,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 08:30:19,688 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-02 08:30:19,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 08:30:19,689 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-02 08:30:19,689 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-02 08:30:19,691 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 13 remaining) [2023-12-02 08:30:19,692 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 13 remaining) [2023-12-02 08:30:19,692 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 13 remaining) [2023-12-02 08:30:19,692 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 13 remaining) [2023-12-02 08:30:19,692 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 13 remaining) [2023-12-02 08:30:19,692 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 13 remaining) [2023-12-02 08:30:19,692 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK (6 of 13 remaining) [2023-12-02 08:30:19,692 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK (5 of 13 remaining) [2023-12-02 08:30:19,692 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 13 remaining) [2023-12-02 08:30:19,693 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 13 remaining) [2023-12-02 08:30:19,693 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 13 remaining) [2023-12-02 08:30:19,693 INFO L805 garLoopResultBuilder]: Registering result SAFE for location disposeErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 13 remaining) [2023-12-02 08:30:19,693 INFO L805 garLoopResultBuilder]: Registering result SAFE for location disposeErr0ASSERT_VIOLATIONMEMORY_LEAK (0 of 13 remaining) [2023-12-02 08:30:19,699 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f920f267-33c1-4c0b-a525-22a892a1674d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-02 08:30:19,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f920f267-33c1-4c0b-a525-22a892a1674d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-02 08:30:19,896 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 08:30:19,900 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-12-02 08:30:19,900 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 08:30:19,902 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 08:30:19 BasicIcfg [2023-12-02 08:30:19,902 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 08:30:19,902 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 08:30:19,902 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 08:30:19,902 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 08:30:19,903 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:29:13" (3/4) ... [2023-12-02 08:30:19,904 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-12-02 08:30:19,906 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure process [2023-12-02 08:30:19,906 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure dispose [2023-12-02 08:30:19,906 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure generate [2023-12-02 08:30:19,910 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 55 nodes and edges [2023-12-02 08:30:19,910 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2023-12-02 08:30:19,911 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2023-12-02 08:30:19,911 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-12-02 08:30:19,986 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f920f267-33c1-4c0b-a525-22a892a1674d/bin/utaipan-verify-nQ1chXbOIh/witness.graphml [2023-12-02 08:30:19,986 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f920f267-33c1-4c0b-a525-22a892a1674d/bin/utaipan-verify-nQ1chXbOIh/witness.yml [2023-12-02 08:30:19,986 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 08:30:19,987 INFO L158 Benchmark]: Toolchain (without parser) took 67832.43ms. Allocated memory was 140.5MB in the beginning and 15.5GB in the end (delta: 15.4GB). Free memory was 99.1MB in the beginning and 8.0GB in the end (delta: -7.9GB). Peak memory consumption was 7.5GB. Max. memory is 16.1GB. [2023-12-02 08:30:19,987 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 100.7MB. Free memory was 69.2MB in the beginning and 69.2MB in the end (delta: 29.7kB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 08:30:19,988 INFO L158 Benchmark]: CACSL2BoogieTranslator took 604.64ms. Allocated memory is still 140.5MB. Free memory was 99.1MB in the beginning and 102.7MB in the end (delta: -3.7MB). Peak memory consumption was 32.8MB. Max. memory is 16.1GB. [2023-12-02 08:30:19,988 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.54ms. Allocated memory is still 140.5MB. Free memory was 102.7MB in the beginning and 99.9MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 08:30:19,988 INFO L158 Benchmark]: Boogie Preprocessor took 47.45ms. Allocated memory is still 140.5MB. Free memory was 99.9MB in the beginning and 97.2MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 08:30:19,989 INFO L158 Benchmark]: RCFGBuilder took 702.02ms. Allocated memory is still 140.5MB. Free memory was 97.2MB in the beginning and 102.8MB in the end (delta: -5.6MB). Peak memory consumption was 48.0MB. Max. memory is 16.1GB. [2023-12-02 08:30:19,989 INFO L158 Benchmark]: TraceAbstraction took 66331.91ms. Allocated memory was 140.5MB in the beginning and 15.5GB in the end (delta: 15.4GB). Free memory was 102.8MB in the beginning and 8.0GB in the end (delta: -7.9GB). Peak memory consumption was 7.5GB. Max. memory is 16.1GB. [2023-12-02 08:30:19,989 INFO L158 Benchmark]: Witness Printer took 84.17ms. Allocated memory is still 15.5GB. Free memory was 8.0GB in the beginning and 8.0GB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-12-02 08:30:19,991 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 100.7MB. Free memory was 69.2MB in the beginning and 69.2MB in the end (delta: 29.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 604.64ms. Allocated memory is still 140.5MB. Free memory was 99.1MB in the beginning and 102.7MB in the end (delta: -3.7MB). Peak memory consumption was 32.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 55.54ms. Allocated memory is still 140.5MB. Free memory was 102.7MB in the beginning and 99.9MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 47.45ms. Allocated memory is still 140.5MB. Free memory was 99.9MB in the beginning and 97.2MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 702.02ms. Allocated memory is still 140.5MB. Free memory was 97.2MB in the beginning and 102.8MB in the end (delta: -5.6MB). Peak memory consumption was 48.0MB. Max. memory is 16.1GB. * TraceAbstraction took 66331.91ms. Allocated memory was 140.5MB in the beginning and 15.5GB in the end (delta: 15.4GB). Free memory was 102.8MB in the beginning and 8.0GB in the end (delta: -7.9GB). Peak memory consumption was 7.5GB. Max. memory is 16.1GB. * Witness Printer took 84.17ms. Allocated memory is still 15.5GB. Free memory was 8.0GB in the beginning and 8.0GB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 1199]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 18]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 18]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 115 locations, 13 error locations. Started 1 CEGAR loops. OverallTime: 66.2s, OverallIterations: 18, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.2s, AutomataDifference: 22.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.5s, HoareTripleCheckerStatistics: 2 mSolverCounterUnknown, 1925 SdHoareTripleChecker+Valid, 2.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1925 mSDsluCounter, 1440 SdHoareTripleChecker+Invalid, 2.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 852 mSDsCounter, 46 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2819 IncrementalHoareTripleChecker+Invalid, 2867 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 46 mSolverCounterUnsat, 588 mSDtfsCounter, 2819 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 176 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=269293occurred in iteration=13, InterpolantAutomatonStates: 80, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 37.2s AutomataMinimizationTime, 18 MinimizatonAttempts, 182866 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.4s InterpolantComputationTime, 422 NumberOfCodeBlocks, 378 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 424 ConstructedInterpolants, 1 QuantifiedInterpolants, 3216 SizeOfPredicates, 0 NumberOfNonLiveVariables, 377 ConjunctsInSsa, 23 ConjunctsInUnsatCore, 21 InterpolantComputations, 17 PerfectInterpolantSequences, 70/143 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 9 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-12-02 08:30:20,008 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f920f267-33c1-4c0b-a525-22a892a1674d/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE