./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/36-apron_21-traces-cluster-based_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_3d768e11-6821-47b8-ba76-b46c169300a0/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d768e11-6821-47b8-ba76-b46c169300a0/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_3d768e11-6821-47b8-ba76-b46c169300a0/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d768e11-6821-47b8-ba76-b46c169300a0/bin/utaipan-verify-nQ1chXbOIh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/36-apron_21-traces-cluster-based_true.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d768e11-6821-47b8-ba76-b46c169300a0/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_3d768e11-6821-47b8-ba76-b46c169300a0/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 cec155e54548239c459fec40910e358deb5fad2ceffa658bfdeefddd1bc9e166 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 16:12:48,574 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 16:12:48,636 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d768e11-6821-47b8-ba76-b46c169300a0/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-12-02 16:12:48,641 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 16:12:48,642 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 16:12:48,665 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 16:12:48,666 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 16:12:48,667 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 16:12:48,667 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 16:12:48,668 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 16:12:48,668 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 16:12:48,669 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 16:12:48,669 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 16:12:48,670 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 16:12:48,670 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 16:12:48,671 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 16:12:48,671 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 16:12:48,672 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 16:12:48,672 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 16:12:48,673 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 16:12:48,673 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 16:12:48,674 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 16:12:48,675 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-02 16:12:48,675 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-02 16:12:48,676 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 16:12:48,676 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 16:12:48,677 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 16:12:48,677 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 16:12:48,678 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 16:12:48,678 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-12-02 16:12:48,678 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-12-02 16:12:48,679 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-12-02 16:12:48,679 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 16:12:48,680 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 16:12:48,680 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 16:12:48,680 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 16:12:48,681 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 16:12:48,681 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 16:12:48,681 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 16:12:48,681 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 16:12:48,681 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 16:12:48,682 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 16:12:48,682 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 16:12:48,682 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 16:12:48,682 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 16:12:48,683 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 16:12:48,683 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 16:12:48,683 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 16:12:48,683 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_3d768e11-6821-47b8-ba76-b46c169300a0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d768e11-6821-47b8-ba76-b46c169300a0/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cec155e54548239c459fec40910e358deb5fad2ceffa658bfdeefddd1bc9e166 [2023-12-02 16:12:48,901 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 16:12:48,924 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 16:12:48,926 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 16:12:48,928 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 16:12:48,928 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 16:12:48,929 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d768e11-6821-47b8-ba76-b46c169300a0/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/goblint-regression/36-apron_21-traces-cluster-based_true.i [2023-12-02 16:12:51,637 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 16:12:51,858 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 16:12:51,858 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d768e11-6821-47b8-ba76-b46c169300a0/sv-benchmarks/c/goblint-regression/36-apron_21-traces-cluster-based_true.i [2023-12-02 16:12:51,872 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d768e11-6821-47b8-ba76-b46c169300a0/bin/utaipan-verify-nQ1chXbOIh/data/62dc49e7b/d1a7416c8bdd49149632c30f7d026ddd/FLAG5ccf83cf8 [2023-12-02 16:12:51,884 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d768e11-6821-47b8-ba76-b46c169300a0/bin/utaipan-verify-nQ1chXbOIh/data/62dc49e7b/d1a7416c8bdd49149632c30f7d026ddd [2023-12-02 16:12:51,887 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 16:12:51,888 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 16:12:51,889 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 16:12:51,889 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 16:12:51,894 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 16:12:51,894 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 04:12:51" (1/1) ... [2023-12-02 16:12:51,895 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@728ac79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:12:51, skipping insertion in model container [2023-12-02 16:12:51,896 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 04:12:51" (1/1) ... [2023-12-02 16:12:51,943 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 16:12:52,223 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 16:12:52,238 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 16:12:52,285 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 16:12:52,326 INFO L206 MainTranslator]: Completed translation [2023-12-02 16:12:52,326 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:12:52 WrapperNode [2023-12-02 16:12:52,326 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 16:12:52,327 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 16:12:52,327 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 16:12:52,328 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 16:12:52,335 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:12:52" (1/1) ... [2023-12-02 16:12:52,350 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:12:52" (1/1) ... [2023-12-02 16:12:52,376 INFO L138 Inliner]: procedures = 166, calls = 54, calls flagged for inlining = 7, calls inlined = 10, statements flattened = 161 [2023-12-02 16:12:52,376 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 16:12:52,377 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 16:12:52,377 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 16:12:52,377 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 16:12:52,387 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:12:52" (1/1) ... [2023-12-02 16:12:52,387 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:12:52" (1/1) ... [2023-12-02 16:12:52,391 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:12:52" (1/1) ... [2023-12-02 16:12:52,391 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:12:52" (1/1) ... [2023-12-02 16:12:52,413 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:12:52" (1/1) ... [2023-12-02 16:12:52,416 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:12:52" (1/1) ... [2023-12-02 16:12:52,418 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:12:52" (1/1) ... [2023-12-02 16:12:52,420 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:12:52" (1/1) ... [2023-12-02 16:12:52,425 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 16:12:52,426 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 16:12:52,426 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 16:12:52,426 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 16:12:52,427 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:12:52" (1/1) ... [2023-12-02 16:12:52,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 16:12:52,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d768e11-6821-47b8-ba76-b46c169300a0/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:12:52,461 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d768e11-6821-47b8-ba76-b46c169300a0/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 16:12:52,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d768e11-6821-47b8-ba76-b46c169300a0/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 16:12:52,490 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-12-02 16:12:52,490 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-12-02 16:12:52,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 16:12:52,491 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-12-02 16:12:52,491 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 16:12:52,491 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 16:12:52,491 INFO L130 BoogieDeclarations]: Found specification of procedure t3_fun [2023-12-02 16:12:52,491 INFO L138 BoogieDeclarations]: Found implementation of procedure t3_fun [2023-12-02 16:12:52,491 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-12-02 16:12:52,492 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-12-02 16:12:52,492 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 16:12:52,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 16:12:52,492 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-12-02 16:12:52,492 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 16:12:52,492 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 16:12:52,494 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 16:12:52,634 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 16:12:52,636 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 16:12:52,912 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 16:12:53,067 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 16:12:53,068 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-02 16:12:53,068 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:12:53 BoogieIcfgContainer [2023-12-02 16:12:53,068 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 16:12:53,070 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 16:12:53,070 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 16:12:53,073 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 16:12:53,073 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 04:12:51" (1/3) ... [2023-12-02 16:12:53,074 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b31153d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 04:12:53, skipping insertion in model container [2023-12-02 16:12:53,074 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:12:52" (2/3) ... [2023-12-02 16:12:53,074 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b31153d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 04:12:53, skipping insertion in model container [2023-12-02 16:12:53,074 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:12:53" (3/3) ... [2023-12-02 16:12:53,076 INFO L112 eAbstractionObserver]: Analyzing ICFG 36-apron_21-traces-cluster-based_true.i [2023-12-02 16:12:53,090 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 16:12:53,090 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2023-12-02 16:12:53,090 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-02 16:12:53,140 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-12-02 16:12:53,166 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 92 places, 91 transitions, 194 flow [2023-12-02 16:12:55,503 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 74629 states, 74606 states have (on average 4.252164705251588) internal successors, (317237), 74628 states have internal predecessors, (317237), 0 states have call successors, (0), 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 16:12:55,531 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 16:12:55,537 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;@7220662f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 16:12:55,537 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2023-12-02 16:12:55,648 INFO L276 IsEmpty]: Start isEmpty. Operand has 74629 states, 74606 states have (on average 4.252164705251588) internal successors, (317237), 74628 states have internal predecessors, (317237), 0 states have call successors, (0), 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 16:12:55,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-12-02 16:12:55,655 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:12:55,656 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-12-02 16:12:55,657 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0ASSERT_VIOLATIONMEMORY_LEAK, t3_funErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-12-02 16:12:55,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:12:55,663 INFO L85 PathProgramCache]: Analyzing trace with hash 15995, now seen corresponding path program 1 times [2023-12-02 16:12:55,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:12:55,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324147660] [2023-12-02 16:12:55,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:12:55,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:12:55,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:12:56,113 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 16:12:56,114 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:12:56,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324147660] [2023-12-02 16:12:56,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324147660] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:12:56,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:12:56,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-12-02 16:12:56,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663156025] [2023-12-02 16:12:56,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:12:56,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:12:56,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:12:56,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:12:56,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:12:56,287 INFO L87 Difference]: Start difference. First operand has 74629 states, 74606 states have (on average 4.252164705251588) internal successors, (317237), 74628 states have internal predecessors, (317237), 0 states have call successors, (0), 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 16:12:57,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:12:57,442 INFO L93 Difference]: Finished difference Result 58980 states and 222996 transitions. [2023-12-02 16:12:57,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:12:57,444 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 16:12:57,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:12:58,080 INFO L225 Difference]: With dead ends: 58980 [2023-12-02 16:12:58,081 INFO L226 Difference]: Without dead ends: 58980 [2023-12-02 16:12:58,082 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 16:12:58,086 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 71 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:12:58,087 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 38 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 16:12:58,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58980 states. [2023-12-02 16:13:00,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58980 to 58980. [2023-12-02 16:13:00,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58980 states, 58958 states have (on average 3.7822856949014554) internal successors, (222996), 58979 states have internal predecessors, (222996), 0 states have call successors, (0), 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 16:13:01,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58980 states to 58980 states and 222996 transitions. [2023-12-02 16:13:01,019 INFO L78 Accepts]: Start accepts. Automaton has 58980 states and 222996 transitions. Word has length 2 [2023-12-02 16:13:01,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:13:01,019 INFO L495 AbstractCegarLoop]: Abstraction has 58980 states and 222996 transitions. [2023-12-02 16:13:01,019 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 16:13:01,019 INFO L276 IsEmpty]: Start isEmpty. Operand 58980 states and 222996 transitions. [2023-12-02 16:13:01,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-12-02 16:13:01,020 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:13:01,020 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-12-02 16:13:01,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 16:13:01,020 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0ASSERT_VIOLATIONMEMORY_LEAK, t3_funErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-12-02 16:13:01,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:13:01,021 INFO L85 PathProgramCache]: Analyzing trace with hash 15996, now seen corresponding path program 1 times [2023-12-02 16:13:01,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:13:01,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983722372] [2023-12-02 16:13:01,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:13:01,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:13:01,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:13:01,314 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 16:13:01,314 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:13:01,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983722372] [2023-12-02 16:13:01,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983722372] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:13:01,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:13:01,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-12-02 16:13:01,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680326166] [2023-12-02 16:13:01,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:13:01,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:13:01,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:13:01,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:13:01,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:13:01,318 INFO L87 Difference]: Start difference. First operand 58980 states and 222996 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 16:13:02,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:13:02,303 INFO L93 Difference]: Finished difference Result 58979 states and 222995 transitions. [2023-12-02 16:13:02,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:13:02,304 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 16:13:02,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:13:02,638 INFO L225 Difference]: With dead ends: 58979 [2023-12-02 16:13:02,638 INFO L226 Difference]: Without dead ends: 58979 [2023-12-02 16:13:02,638 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 16:13:02,640 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 70 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:13:02,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 39 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 16:13:02,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58979 states. [2023-12-02 16:13:04,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58979 to 58979. [2023-12-02 16:13:04,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58979 states, 58958 states have (on average 3.7822687336748193) internal successors, (222995), 58978 states have internal predecessors, (222995), 0 states have call successors, (0), 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 16:13:04,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58979 states to 58979 states and 222995 transitions. [2023-12-02 16:13:04,639 INFO L78 Accepts]: Start accepts. Automaton has 58979 states and 222995 transitions. Word has length 2 [2023-12-02 16:13:04,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:13:04,640 INFO L495 AbstractCegarLoop]: Abstraction has 58979 states and 222995 transitions. [2023-12-02 16:13:04,640 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 16:13:04,640 INFO L276 IsEmpty]: Start isEmpty. Operand 58979 states and 222995 transitions. [2023-12-02 16:13:04,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-12-02 16:13:04,860 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:13:04,860 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-12-02 16:13:04,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 16:13:04,860 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0ASSERT_VIOLATIONMEMORY_LEAK, t3_funErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-12-02 16:13:04,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:13:04,861 INFO L85 PathProgramCache]: Analyzing trace with hash 477035833, now seen corresponding path program 1 times [2023-12-02 16:13:04,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:13:04,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379470] [2023-12-02 16:13:04,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:13:04,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:13:04,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:13:04,961 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 16:13:04,961 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:13:04,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379470] [2023-12-02 16:13:04,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379470] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:13:04,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:13:04,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-12-02 16:13:04,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146358235] [2023-12-02 16:13:04,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:13:04,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:13:04,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:13:04,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:13:04,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:13:04,964 INFO L87 Difference]: Start difference. First operand 58979 states and 222995 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 16:13:05,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:13:05,462 INFO L93 Difference]: Finished difference Result 58963 states and 222963 transitions. [2023-12-02 16:13:05,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:13:05,463 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 16:13:05,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:13:06,105 INFO L225 Difference]: With dead ends: 58963 [2023-12-02 16:13:06,106 INFO L226 Difference]: Without dead ends: 58963 [2023-12-02 16:13:06,106 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 16:13:06,108 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 66 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:13:06,108 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 37 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 16:13:06,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58963 states. [2023-12-02 16:13:07,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58963 to 58963. [2023-12-02 16:13:07,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58963 states, 58943 states have (on average 3.78268835994096) internal successors, (222963), 58962 states have internal predecessors, (222963), 0 states have call successors, (0), 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 16:13:08,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58963 states to 58963 states and 222963 transitions. [2023-12-02 16:13:08,026 INFO L78 Accepts]: Start accepts. Automaton has 58963 states and 222963 transitions. Word has length 5 [2023-12-02 16:13:08,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:13:08,026 INFO L495 AbstractCegarLoop]: Abstraction has 58963 states and 222963 transitions. [2023-12-02 16:13:08,026 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 16:13:08,026 INFO L276 IsEmpty]: Start isEmpty. Operand 58963 states and 222963 transitions. [2023-12-02 16:13:08,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-12-02 16:13:08,027 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:13:08,027 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-12-02 16:13:08,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 16:13:08,027 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0ASSERT_VIOLATIONMEMORY_LEAK, t3_funErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-12-02 16:13:08,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:13:08,028 INFO L85 PathProgramCache]: Analyzing trace with hash 477035834, now seen corresponding path program 1 times [2023-12-02 16:13:08,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:13:08,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609367594] [2023-12-02 16:13:08,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:13:08,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:13:08,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:13:08,126 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 16:13:08,126 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:13:08,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609367594] [2023-12-02 16:13:08,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609367594] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:13:08,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:13:08,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-12-02 16:13:08,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589115580] [2023-12-02 16:13:08,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:13:08,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:13:08,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:13:08,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:13:08,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:13:08,129 INFO L87 Difference]: Start difference. First operand 58963 states and 222963 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 16:13:08,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:13:08,956 INFO L93 Difference]: Finished difference Result 58947 states and 222931 transitions. [2023-12-02 16:13:08,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:13:08,957 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 16:13:08,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:13:09,248 INFO L225 Difference]: With dead ends: 58947 [2023-12-02 16:13:09,248 INFO L226 Difference]: Without dead ends: 58947 [2023-12-02 16:13:09,248 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 16:13:09,250 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 65 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 16:13:09,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 38 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 16:13:09,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58947 states. [2023-12-02 16:13:10,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58947 to 58947. [2023-12-02 16:13:11,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58947 states, 58928 states have (on average 3.7831081998370895) internal successors, (222931), 58946 states have internal predecessors, (222931), 0 states have call successors, (0), 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 16:13:11,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58947 states to 58947 states and 222931 transitions. [2023-12-02 16:13:11,313 INFO L78 Accepts]: Start accepts. Automaton has 58947 states and 222931 transitions. Word has length 5 [2023-12-02 16:13:11,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:13:11,314 INFO L495 AbstractCegarLoop]: Abstraction has 58947 states and 222931 transitions. [2023-12-02 16:13:11,314 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 16:13:11,314 INFO L276 IsEmpty]: Start isEmpty. Operand 58947 states and 222931 transitions. [2023-12-02 16:13:11,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-12-02 16:13:11,315 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:13:11,315 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:13:11,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-02 16:13:11,315 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0ASSERT_VIOLATIONMEMORY_LEAK, t3_funErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-12-02 16:13:11,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:13:11,316 INFO L85 PathProgramCache]: Analyzing trace with hash -671755466, now seen corresponding path program 1 times [2023-12-02 16:13:11,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:13:11,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875011488] [2023-12-02 16:13:11,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:13:11,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:13:11,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:13:11,380 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 16:13:11,381 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:13:11,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875011488] [2023-12-02 16:13:11,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875011488] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:13:11,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:13:11,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-12-02 16:13:11,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729230531] [2023-12-02 16:13:11,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:13:11,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:13:11,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:13:11,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:13:11,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:13:11,384 INFO L87 Difference]: Start difference. First operand 58947 states and 222931 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 16:13:12,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:13:12,249 INFO L93 Difference]: Finished difference Result 58771 states and 222419 transitions. [2023-12-02 16:13:12,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:13:12,249 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 16:13:12,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:13:12,510 INFO L225 Difference]: With dead ends: 58771 [2023-12-02 16:13:12,510 INFO L226 Difference]: Without dead ends: 58771 [2023-12-02 16:13:12,510 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 16:13:12,512 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 61 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:13:12,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 36 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 16:13:12,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58771 states. [2023-12-02 16:13:13,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58771 to 58771. [2023-12-02 16:13:13,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58771 states, 58754 states have (on average 3.785597576335228) internal successors, (222419), 58770 states have internal predecessors, (222419), 0 states have call successors, (0), 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 16:13:14,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58771 states to 58771 states and 222419 transitions. [2023-12-02 16:13:14,193 INFO L78 Accepts]: Start accepts. Automaton has 58771 states and 222419 transitions. Word has length 8 [2023-12-02 16:13:14,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:13:14,194 INFO L495 AbstractCegarLoop]: Abstraction has 58771 states and 222419 transitions. [2023-12-02 16:13:14,194 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 16:13:14,194 INFO L276 IsEmpty]: Start isEmpty. Operand 58771 states and 222419 transitions. [2023-12-02 16:13:14,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-12-02 16:13:14,195 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:13:14,195 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:13:14,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-02 16:13:14,195 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0ASSERT_VIOLATIONMEMORY_LEAK, t3_funErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-12-02 16:13:14,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:13:14,196 INFO L85 PathProgramCache]: Analyzing trace with hash -671755465, now seen corresponding path program 1 times [2023-12-02 16:13:14,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:13:14,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107373115] [2023-12-02 16:13:14,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:13:14,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:13:14,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:13:14,267 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 16:13:14,267 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:13:14,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107373115] [2023-12-02 16:13:14,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107373115] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:13:14,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:13:14,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-12-02 16:13:14,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705568318] [2023-12-02 16:13:14,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:13:14,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:13:14,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:13:14,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:13:14,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:13:14,270 INFO L87 Difference]: Start difference. First operand 58771 states and 222419 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 16:13:15,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:13:15,040 INFO L93 Difference]: Finished difference Result 58595 states and 221907 transitions. [2023-12-02 16:13:15,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:13:15,041 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 16:13:15,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:13:15,287 INFO L225 Difference]: With dead ends: 58595 [2023-12-02 16:13:15,287 INFO L226 Difference]: Without dead ends: 58595 [2023-12-02 16:13:15,288 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 16:13:15,289 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 60 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:13:15,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 37 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 16:13:15,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58595 states. [2023-12-02 16:13:17,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58595 to 58595. [2023-12-02 16:13:17,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58595 states, 58580 states have (on average 3.7881017412086035) internal successors, (221907), 58594 states have internal predecessors, (221907), 0 states have call successors, (0), 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 16:13:17,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58595 states to 58595 states and 221907 transitions. [2023-12-02 16:13:17,852 INFO L78 Accepts]: Start accepts. Automaton has 58595 states and 221907 transitions. Word has length 8 [2023-12-02 16:13:17,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:13:17,852 INFO L495 AbstractCegarLoop]: Abstraction has 58595 states and 221907 transitions. [2023-12-02 16:13:17,852 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 16:13:17,853 INFO L276 IsEmpty]: Start isEmpty. Operand 58595 states and 221907 transitions. [2023-12-02 16:13:17,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-12-02 16:13:17,856 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:13:17,856 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:13:17,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-02 16:13:17,857 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2_funErr0ASSERT_VIOLATIONMEMORY_LEAK === [t2_funErr0ASSERT_VIOLATIONMEMORY_LEAK, t3_funErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-12-02 16:13:17,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:13:17,857 INFO L85 PathProgramCache]: Analyzing trace with hash -554246367, now seen corresponding path program 1 times [2023-12-02 16:13:17,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:13:17,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439515104] [2023-12-02 16:13:17,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:13:17,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:13:17,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:13:17,969 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 16:13:17,970 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:13:17,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439515104] [2023-12-02 16:13:17,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439515104] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:13:17,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:13:17,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 16:13:17,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757718555] [2023-12-02 16:13:17,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:13:17,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 16:13:17,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:13:17,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 16:13:17,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 16:13:17,972 INFO L87 Difference]: Start difference. First operand 58595 states and 221907 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:13:18,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:13:18,683 INFO L93 Difference]: Finished difference Result 63897 states and 234476 transitions. [2023-12-02 16:13:18,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 16:13:18,684 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-12-02 16:13:18,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:13:18,972 INFO L225 Difference]: With dead ends: 63897 [2023-12-02 16:13:18,972 INFO L226 Difference]: Without dead ends: 63777 [2023-12-02 16:13:18,972 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 16:13:18,973 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 290 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 359 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 16:13:18,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [290 Valid, 200 Invalid, 361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 359 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 16:13:19,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63777 states. [2023-12-02 16:13:20,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63777 to 56495. [2023-12-02 16:13:20,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56495 states, 56480 states have (on average 3.7311437677053823) internal successors, (210735), 56494 states have internal predecessors, (210735), 0 states have call successors, (0), 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 16:13:21,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56495 states to 56495 states and 210735 transitions. [2023-12-02 16:13:21,279 INFO L78 Accepts]: Start accepts. Automaton has 56495 states and 210735 transitions. Word has length 14 [2023-12-02 16:13:21,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:13:21,280 INFO L495 AbstractCegarLoop]: Abstraction has 56495 states and 210735 transitions. [2023-12-02 16:13:21,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:13:21,280 INFO L276 IsEmpty]: Start isEmpty. Operand 56495 states and 210735 transitions. [2023-12-02 16:13:21,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-02 16:13:21,285 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:13:21,285 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:13:21,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-02 16:13:21,286 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [t2_funErr0ASSERT_VIOLATIONMEMORY_LEAK, t3_funErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-12-02 16:13:21,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:13:21,286 INFO L85 PathProgramCache]: Analyzing trace with hash -645230890, now seen corresponding path program 1 times [2023-12-02 16:13:21,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:13:21,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281634439] [2023-12-02 16:13:21,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:13:21,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:13:21,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:13:21,396 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 16:13:21,396 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:13:21,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281634439] [2023-12-02 16:13:21,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281634439] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:13:21,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:13:21,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 16:13:21,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839223100] [2023-12-02 16:13:21,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:13:21,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 16:13:21,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:13:21,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 16:13:21,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 16:13:21,398 INFO L87 Difference]: Start difference. First operand 56495 states and 210735 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:13:22,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:13:22,135 INFO L93 Difference]: Finished difference Result 74925 states and 277030 transitions. [2023-12-02 16:13:22,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 16:13:22,136 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-12-02 16:13:22,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:13:22,880 INFO L225 Difference]: With dead ends: 74925 [2023-12-02 16:13:22,880 INFO L226 Difference]: Without dead ends: 74925 [2023-12-02 16:13:22,880 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 16:13:22,881 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 220 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 16:13:22,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 169 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 333 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 16:13:23,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74925 states. [2023-12-02 16:13:24,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74925 to 67775. [2023-12-02 16:13:24,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67775 states, 67760 states have (on average 3.7129427390791028) internal successors, (251589), 67774 states have internal predecessors, (251589), 0 states have call successors, (0), 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 16:13:25,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67775 states to 67775 states and 251589 transitions. [2023-12-02 16:13:25,066 INFO L78 Accepts]: Start accepts. Automaton has 67775 states and 251589 transitions. Word has length 17 [2023-12-02 16:13:25,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:13:25,066 INFO L495 AbstractCegarLoop]: Abstraction has 67775 states and 251589 transitions. [2023-12-02 16:13:25,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:13:25,067 INFO L276 IsEmpty]: Start isEmpty. Operand 67775 states and 251589 transitions. [2023-12-02 16:13:25,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-02 16:13:25,077 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:13:25,077 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:13:25,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-02 16:13:25,077 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t3_funErr0ASSERT_VIOLATIONMEMORY_LEAK === [t2_funErr0ASSERT_VIOLATIONMEMORY_LEAK, t3_funErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-12-02 16:13:25,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:13:25,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1676376182, now seen corresponding path program 1 times [2023-12-02 16:13:25,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:13:25,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916495649] [2023-12-02 16:13:25,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:13:25,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:13:25,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:13:25,196 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 16:13:25,196 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:13:25,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916495649] [2023-12-02 16:13:25,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916495649] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:13:25,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:13:25,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 16:13:25,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119145793] [2023-12-02 16:13:25,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:13:25,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 16:13:25,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:13:25,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 16:13:25,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 16:13:25,199 INFO L87 Difference]: Start difference. First operand 67775 states and 251589 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:13:26,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:13:26,385 INFO L93 Difference]: Finished difference Result 91705 states and 336648 transitions. [2023-12-02 16:13:26,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 16:13:26,385 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-12-02 16:13:26,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:13:26,826 INFO L225 Difference]: With dead ends: 91705 [2023-12-02 16:13:26,826 INFO L226 Difference]: Without dead ends: 91145 [2023-12-02 16:13:26,827 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 16:13:26,827 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 223 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 351 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 16:13:26,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 188 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 351 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 16:13:27,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91145 states. [2023-12-02 16:13:29,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91145 to 83213. [2023-12-02 16:13:29,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83213 states, 83198 states have (on average 3.711928171350273) internal successors, (308825), 83212 states have internal predecessors, (308825), 0 states have call successors, (0), 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 16:13:29,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83213 states to 83213 states and 308825 transitions. [2023-12-02 16:13:29,678 INFO L78 Accepts]: Start accepts. Automaton has 83213 states and 308825 transitions. Word has length 21 [2023-12-02 16:13:29,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:13:29,678 INFO L495 AbstractCegarLoop]: Abstraction has 83213 states and 308825 transitions. [2023-12-02 16:13:29,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:13:29,679 INFO L276 IsEmpty]: Start isEmpty. Operand 83213 states and 308825 transitions. [2023-12-02 16:13:29,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-02 16:13:29,700 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:13:29,701 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 16:13:29,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-02 16:13:29,701 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [t2_funErr0ASSERT_VIOLATIONMEMORY_LEAK, t3_funErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-12-02 16:13:29,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:13:29,702 INFO L85 PathProgramCache]: Analyzing trace with hash 589836742, now seen corresponding path program 1 times [2023-12-02 16:13:29,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:13:29,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148332253] [2023-12-02 16:13:29,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:13:29,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:13:29,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:13:29,800 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 16:13:29,801 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:13:29,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148332253] [2023-12-02 16:13:29,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148332253] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:13:29,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:13:29,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 16:13:29,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663676913] [2023-12-02 16:13:29,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:13:29,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:13:29,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:13:29,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:13:29,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:13:29,803 INFO L87 Difference]: Start difference. First operand 83213 states and 308825 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 16:13:30,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:13:30,900 INFO L93 Difference]: Finished difference Result 82887 states and 294790 transitions. [2023-12-02 16:13:30,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:13:30,901 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 16:13:30,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:13:31,223 INFO L225 Difference]: With dead ends: 82887 [2023-12-02 16:13:31,223 INFO L226 Difference]: Without dead ends: 82839 [2023-12-02 16:13:31,224 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 16:13:31,224 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 43 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:13:31,225 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 71 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 16:13:31,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82839 states. [2023-12-02 16:13:32,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82839 to 71260. [2023-12-02 16:13:33,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71260 states, 71234 states have (on average 3.555212398573715) internal successors, (253252), 71259 states have internal predecessors, (253252), 0 states have call successors, (0), 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 16:13:33,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71260 states to 71260 states and 253252 transitions. [2023-12-02 16:13:33,271 INFO L78 Accepts]: Start accepts. Automaton has 71260 states and 253252 transitions. Word has length 23 [2023-12-02 16:13:33,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:13:33,271 INFO L495 AbstractCegarLoop]: Abstraction has 71260 states and 253252 transitions. [2023-12-02 16:13:33,271 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 16:13:33,271 INFO L276 IsEmpty]: Start isEmpty. Operand 71260 states and 253252 transitions. [2023-12-02 16:13:33,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-02 16:13:33,279 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:13:33,279 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 16:13:33,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-02 16:13:33,279 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [t2_funErr0ASSERT_VIOLATIONMEMORY_LEAK, t3_funErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-12-02 16:13:33,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:13:33,280 INFO L85 PathProgramCache]: Analyzing trace with hash 838420500, now seen corresponding path program 1 times [2023-12-02 16:13:33,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:13:33,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761392786] [2023-12-02 16:13:33,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:13:33,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:13:33,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:13:33,513 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 16:13:33,514 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:13:33,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761392786] [2023-12-02 16:13:33,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761392786] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:13:33,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:13:33,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 16:13:33,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100389123] [2023-12-02 16:13:33,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:13:33,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 16:13:33,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:13:33,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 16:13:33,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 16:13:33,516 INFO L87 Difference]: Start difference. First operand 71260 states and 253252 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 16:13:34,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:13:34,473 INFO L93 Difference]: Finished difference Result 67767 states and 240263 transitions. [2023-12-02 16:13:34,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 16:13:34,474 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 23 [2023-12-02 16:13:34,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:13:34,715 INFO L225 Difference]: With dead ends: 67767 [2023-12-02 16:13:34,715 INFO L226 Difference]: Without dead ends: 59949 [2023-12-02 16:13:34,716 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 16:13:34,716 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 87 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-02 16:13:34,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 70 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-02 16:13:34,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59949 states. [2023-12-02 16:13:36,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59949 to 59949. [2023-12-02 16:13:36,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59949 states, 59927 states have (on average 3.51612795567941) internal successors, (210711), 59948 states have internal predecessors, (210711), 0 states have call successors, (0), 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 16:13:36,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59949 states to 59949 states and 210711 transitions. [2023-12-02 16:13:36,549 INFO L78 Accepts]: Start accepts. Automaton has 59949 states and 210711 transitions. Word has length 23 [2023-12-02 16:13:36,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:13:36,549 INFO L495 AbstractCegarLoop]: Abstraction has 59949 states and 210711 transitions. [2023-12-02 16:13:36,549 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 16:13:36,549 INFO L276 IsEmpty]: Start isEmpty. Operand 59949 states and 210711 transitions. [2023-12-02 16:13:36,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-12-02 16:13:36,555 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:13:36,555 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] [2023-12-02 16:13:36,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-02 16:13:36,555 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [t2_funErr0ASSERT_VIOLATIONMEMORY_LEAK, t3_funErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-12-02 16:13:36,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:13:36,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1173368762, now seen corresponding path program 1 times [2023-12-02 16:13:36,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:13:36,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089537069] [2023-12-02 16:13:36,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:13:36,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:13:36,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:13:36,706 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 16:13:36,706 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:13:36,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089537069] [2023-12-02 16:13:36,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089537069] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:13:36,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:13:36,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 16:13:36,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911288864] [2023-12-02 16:13:36,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:13:36,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 16:13:36,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:13:36,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 16:13:36,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 16:13:36,708 INFO L87 Difference]: Start difference. First operand 59949 states and 210711 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 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 16:13:36,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:13:36,941 INFO L93 Difference]: Finished difference Result 26501 states and 87474 transitions. [2023-12-02 16:13:36,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 16:13:36,941 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2023-12-02 16:13:36,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:13:37,372 INFO L225 Difference]: With dead ends: 26501 [2023-12-02 16:13:37,372 INFO L226 Difference]: Without dead ends: 25748 [2023-12-02 16:13:37,373 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 16:13:37,373 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 119 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:13:37,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 50 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 16:13:37,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25748 states. [2023-12-02 16:13:37,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25748 to 25140. [2023-12-02 16:13:37,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25140 states, 25123 states have (on average 3.310154042112805) internal successors, (83161), 25139 states have internal predecessors, (83161), 0 states have call successors, (0), 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 16:13:37,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25140 states to 25140 states and 83161 transitions. [2023-12-02 16:13:37,896 INFO L78 Accepts]: Start accepts. Automaton has 25140 states and 83161 transitions. Word has length 24 [2023-12-02 16:13:37,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:13:37,896 INFO L495 AbstractCegarLoop]: Abstraction has 25140 states and 83161 transitions. [2023-12-02 16:13:37,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 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 16:13:37,896 INFO L276 IsEmpty]: Start isEmpty. Operand 25140 states and 83161 transitions. [2023-12-02 16:13:37,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-12-02 16:13:37,901 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:13:37,901 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] [2023-12-02 16:13:37,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-02 16:13:37,901 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t2_funErr0ASSERT_VIOLATIONMEMORY_LEAK === [t2_funErr0ASSERT_VIOLATIONMEMORY_LEAK, t3_funErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-12-02 16:13:37,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:13:37,902 INFO L85 PathProgramCache]: Analyzing trace with hash -203710417, now seen corresponding path program 1 times [2023-12-02 16:13:37,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:13:37,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737184283] [2023-12-02 16:13:37,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:13:37,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:13:37,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:13:38,014 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 16:13:38,014 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:13:38,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737184283] [2023-12-02 16:13:38,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737184283] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:13:38,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:13:38,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 16:13:38,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101101801] [2023-12-02 16:13:38,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:13:38,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 16:13:38,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:13:38,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 16:13:38,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-02 16:13:38,016 INFO L87 Difference]: Start difference. First operand 25140 states and 83161 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 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 16:13:38,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:13:38,508 INFO L93 Difference]: Finished difference Result 20778 states and 67918 transitions. [2023-12-02 16:13:38,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 16:13:38,508 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 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 25 [2023-12-02 16:13:38,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:13:38,557 INFO L225 Difference]: With dead ends: 20778 [2023-12-02 16:13:38,557 INFO L226 Difference]: Without dead ends: 17456 [2023-12-02 16:13:38,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-02 16:13:38,558 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 221 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 16:13:38,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 185 Invalid, 464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 462 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 16:13:38,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17456 states. [2023-12-02 16:13:38,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17456 to 14587. [2023-12-02 16:13:38,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14587 states, 14578 states have (on average 3.2443407874879955) internal successors, (47296), 14586 states have internal predecessors, (47296), 0 states have call successors, (0), 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 16:13:39,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14587 states to 14587 states and 47296 transitions. [2023-12-02 16:13:39,145 INFO L78 Accepts]: Start accepts. Automaton has 14587 states and 47296 transitions. Word has length 25 [2023-12-02 16:13:39,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:13:39,146 INFO L495 AbstractCegarLoop]: Abstraction has 14587 states and 47296 transitions. [2023-12-02 16:13:39,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 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 16:13:39,146 INFO L276 IsEmpty]: Start isEmpty. Operand 14587 states and 47296 transitions. [2023-12-02 16:13:39,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-12-02 16:13:39,154 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:13:39,154 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] [2023-12-02 16:13:39,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-02 16:13:39,154 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [t2_funErr0ASSERT_VIOLATIONMEMORY_LEAK, t3_funErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-12-02 16:13:39,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:13:39,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1699678333, now seen corresponding path program 1 times [2023-12-02 16:13:39,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:13:39,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102488785] [2023-12-02 16:13:39,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:13:39,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:13:39,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:13:39,292 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 16:13:39,292 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:13:39,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102488785] [2023-12-02 16:13:39,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102488785] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:13:39,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:13:39,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 16:13:39,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073430482] [2023-12-02 16:13:39,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:13:39,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 16:13:39,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:13:39,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 16:13:39,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-02 16:13:39,294 INFO L87 Difference]: Start difference. First operand 14587 states and 47296 transitions. Second operand has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:13:39,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:13:39,770 INFO L93 Difference]: Finished difference Result 13793 states and 44291 transitions. [2023-12-02 16:13:39,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-02 16:13:39,770 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2023-12-02 16:13:39,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:13:39,805 INFO L225 Difference]: With dead ends: 13793 [2023-12-02 16:13:39,805 INFO L226 Difference]: Without dead ends: 11393 [2023-12-02 16:13:39,805 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2023-12-02 16:13:39,806 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 240 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 484 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 16:13:39,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [240 Valid, 155 Invalid, 489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 484 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 16:13:39,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11393 states. [2023-12-02 16:13:40,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11393 to 10025. [2023-12-02 16:13:40,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10025 states, 10022 states have (on average 3.142985432049491) internal successors, (31499), 10024 states have internal predecessors, (31499), 0 states have call successors, (0), 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 16:13:40,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10025 states to 10025 states and 31499 transitions. [2023-12-02 16:13:40,089 INFO L78 Accepts]: Start accepts. Automaton has 10025 states and 31499 transitions. Word has length 30 [2023-12-02 16:13:40,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:13:40,089 INFO L495 AbstractCegarLoop]: Abstraction has 10025 states and 31499 transitions. [2023-12-02 16:13:40,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:13:40,089 INFO L276 IsEmpty]: Start isEmpty. Operand 10025 states and 31499 transitions. [2023-12-02 16:13:40,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-02 16:13:40,101 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:13:40,101 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, 1] [2023-12-02 16:13:40,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-02 16:13:40,101 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t3_funErr0ASSERT_VIOLATIONMEMORY_LEAK === [t2_funErr0ASSERT_VIOLATIONMEMORY_LEAK, t3_funErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-12-02 16:13:40,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:13:40,102 INFO L85 PathProgramCache]: Analyzing trace with hash -1731785673, now seen corresponding path program 1 times [2023-12-02 16:13:40,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:13:40,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373654439] [2023-12-02 16:13:40,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:13:40,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:13:40,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:13:40,239 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 16:13:40,239 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:13:40,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373654439] [2023-12-02 16:13:40,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373654439] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:13:40,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:13:40,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 16:13:40,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111241332] [2023-12-02 16:13:40,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:13:40,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 16:13:40,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:13:40,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 16:13:40,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-02 16:13:40,241 INFO L87 Difference]: Start difference. First operand 10025 states and 31499 transitions. Second operand has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:13:40,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:13:40,652 INFO L93 Difference]: Finished difference Result 8801 states and 27290 transitions. [2023-12-02 16:13:40,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-02 16:13:40,652 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2023-12-02 16:13:40,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:13:40,659 INFO L225 Difference]: With dead ends: 8801 [2023-12-02 16:13:40,659 INFO L226 Difference]: Without dead ends: 2672 [2023-12-02 16:13:40,660 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2023-12-02 16:13:40,660 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 209 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 496 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 16:13:40,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 148 Invalid, 497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 496 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 16:13:40,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2672 states. [2023-12-02 16:13:40,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2672 to 2672. [2023-12-02 16:13:40,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2672 states, 2670 states have (on average 3.0370786516853934) internal successors, (8109), 2671 states have internal predecessors, (8109), 0 states have call successors, (0), 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 16:13:40,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2672 states to 2672 states and 8109 transitions. [2023-12-02 16:13:40,710 INFO L78 Accepts]: Start accepts. Automaton has 2672 states and 8109 transitions. Word has length 34 [2023-12-02 16:13:40,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:13:40,711 INFO L495 AbstractCegarLoop]: Abstraction has 2672 states and 8109 transitions. [2023-12-02 16:13:40,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:13:40,711 INFO L276 IsEmpty]: Start isEmpty. Operand 2672 states and 8109 transitions. [2023-12-02 16:13:40,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-02 16:13:40,713 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:13:40,713 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, 1, 1, 1, 1, 1] [2023-12-02 16:13:40,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-02 16:13:40,714 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [t2_funErr0ASSERT_VIOLATIONMEMORY_LEAK, t3_funErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-12-02 16:13:40,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:13:40,714 INFO L85 PathProgramCache]: Analyzing trace with hash -358772481, now seen corresponding path program 1 times [2023-12-02 16:13:40,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:13:40,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460218427] [2023-12-02 16:13:40,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:13:40,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:13:40,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:13:40,865 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 16:13:40,865 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:13:40,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460218427] [2023-12-02 16:13:40,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460218427] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:13:40,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:13:40,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 16:13:40,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932934032] [2023-12-02 16:13:40,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:13:40,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 16:13:40,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:13:40,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 16:13:40,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 16:13:40,868 INFO L87 Difference]: Start difference. First operand 2672 states and 8109 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:13:40,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:13:40,925 INFO L93 Difference]: Finished difference Result 680 states and 1823 transitions. [2023-12-02 16:13:40,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 16:13:40,926 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2023-12-02 16:13:40,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:13:40,926 INFO L225 Difference]: With dead ends: 680 [2023-12-02 16:13:40,927 INFO L226 Difference]: Without dead ends: 0 [2023-12-02 16:13:40,927 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 16:13:40,928 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 31 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:13:40,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 28 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 16:13:40,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-02 16:13:40,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-02 16:13:40,929 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 16:13:40,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-02 16:13:40,929 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 38 [2023-12-02 16:13:40,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:13:40,929 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-02 16:13:40,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:13:40,929 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-02 16:13:40,929 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-02 16:13:40,932 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr0ASSERT_VIOLATIONMEMORY_LEAK (15 of 16 remaining) [2023-12-02 16:13:40,932 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t3_funErr0ASSERT_VIOLATIONMEMORY_LEAK (14 of 16 remaining) [2023-12-02 16:13:40,933 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 16 remaining) [2023-12-02 16:13:40,933 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 16 remaining) [2023-12-02 16:13:40,933 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 16 remaining) [2023-12-02 16:13:40,933 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 16 remaining) [2023-12-02 16:13:40,933 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 16 remaining) [2023-12-02 16:13:40,933 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 16 remaining) [2023-12-02 16:13:40,933 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK (7 of 16 remaining) [2023-12-02 16:13:40,933 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (6 of 16 remaining) [2023-12-02 16:13:40,934 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK (5 of 16 remaining) [2023-12-02 16:13:40,934 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 16 remaining) [2023-12-02 16:13:40,934 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 16 remaining) [2023-12-02 16:13:40,934 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 16 remaining) [2023-12-02 16:13:40,934 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 16 remaining) [2023-12-02 16:13:40,934 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t3_funErr0ASSERT_VIOLATIONMEMORY_LEAK (0 of 16 remaining) [2023-12-02 16:13:40,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-02 16:13:40,938 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:13:40,943 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-12-02 16:13:40,943 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 16:13:40,946 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 04:13:40 BasicIcfg [2023-12-02 16:13:40,946 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 16:13:40,947 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 16:13:40,947 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 16:13:40,947 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 16:13:40,947 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:12:53" (3/4) ... [2023-12-02 16:13:40,949 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-12-02 16:13:40,952 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t2_fun [2023-12-02 16:13:40,952 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t3_fun [2023-12-02 16:13:40,953 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2023-12-02 16:13:40,957 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 47 nodes and edges [2023-12-02 16:13:40,958 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2023-12-02 16:13:40,958 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-12-02 16:13:40,958 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-12-02 16:13:41,034 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d768e11-6821-47b8-ba76-b46c169300a0/bin/utaipan-verify-nQ1chXbOIh/witness.graphml [2023-12-02 16:13:41,034 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d768e11-6821-47b8-ba76-b46c169300a0/bin/utaipan-verify-nQ1chXbOIh/witness.yml [2023-12-02 16:13:41,035 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 16:13:41,036 INFO L158 Benchmark]: Toolchain (without parser) took 49147.69ms. Allocated memory was 146.8MB in the beginning and 14.6GB in the end (delta: 14.4GB). Free memory was 103.7MB in the beginning and 9.3GB in the end (delta: -9.2GB). Peak memory consumption was 5.2GB. Max. memory is 16.1GB. [2023-12-02 16:13:41,036 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 104.9MB. Free memory is still 54.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 16:13:41,036 INFO L158 Benchmark]: CACSL2BoogieTranslator took 437.81ms. Allocated memory is still 146.8MB. Free memory was 103.7MB in the beginning and 83.5MB in the end (delta: 20.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-12-02 16:13:41,037 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.08ms. Allocated memory is still 146.8MB. Free memory was 83.5MB in the beginning and 81.1MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 16:13:41,037 INFO L158 Benchmark]: Boogie Preprocessor took 47.94ms. Allocated memory is still 146.8MB. Free memory was 81.1MB in the beginning and 120.2MB in the end (delta: -39.1MB). Peak memory consumption was 7.1MB. Max. memory is 16.1GB. [2023-12-02 16:13:41,038 INFO L158 Benchmark]: RCFGBuilder took 642.71ms. Allocated memory is still 146.8MB. Free memory was 120.2MB in the beginning and 75.6MB in the end (delta: 44.6MB). Peak memory consumption was 44.0MB. Max. memory is 16.1GB. [2023-12-02 16:13:41,038 INFO L158 Benchmark]: TraceAbstraction took 47875.82ms. Allocated memory was 146.8MB in the beginning and 14.6GB in the end (delta: 14.4GB). Free memory was 75.1MB in the beginning and 9.3GB in the end (delta: -9.3GB). Peak memory consumption was 5.2GB. Max. memory is 16.1GB. [2023-12-02 16:13:41,039 INFO L158 Benchmark]: Witness Printer took 88.28ms. Allocated memory is still 14.6GB. Free memory was 9.3GB in the beginning and 9.3GB in the end (delta: 5.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-12-02 16:13:41,041 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 104.9MB. Free memory is still 54.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 437.81ms. Allocated memory is still 146.8MB. Free memory was 103.7MB in the beginning and 83.5MB in the end (delta: 20.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.08ms. Allocated memory is still 146.8MB. Free memory was 83.5MB in the beginning and 81.1MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 47.94ms. Allocated memory is still 146.8MB. Free memory was 81.1MB in the beginning and 120.2MB in the end (delta: -39.1MB). Peak memory consumption was 7.1MB. Max. memory is 16.1GB. * RCFGBuilder took 642.71ms. Allocated memory is still 146.8MB. Free memory was 120.2MB in the beginning and 75.6MB in the end (delta: 44.6MB). Peak memory consumption was 44.0MB. Max. memory is 16.1GB. * TraceAbstraction took 47875.82ms. Allocated memory was 146.8MB in the beginning and 14.6GB in the end (delta: 14.4GB). Free memory was 75.1MB in the beginning and 9.3GB in the end (delta: -9.3GB). Peak memory consumption was 5.2GB. Max. memory is 16.1GB. * Witness Printer took 88.28ms. Allocated memory is still 14.6GB. Free memory was 9.3GB in the beginning and 9.3GB in the end (delta: 5.3MB). Peak memory consumption was 6.3MB. 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: 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 - 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: 18]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 723]: 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, 130 locations, 16 error locations. Started 1 CEGAR loops. OverallTime: 47.8s, OverallIterations: 16, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.4s, AutomataDifference: 16.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2076 SdHoareTripleChecker+Valid, 3.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2076 mSDsluCounter, 1489 SdHoareTripleChecker+Invalid, 2.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 857 mSDsCounter, 55 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3375 IncrementalHoareTripleChecker+Invalid, 3430 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 55 mSolverCounterUnsat, 632 mSDtfsCounter, 3375 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 90 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=83213occurred in iteration=9, InterpolantAutomatonStates: 88, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 25.8s AutomataMinimizationTime, 16 MinimizatonAttempts, 38788 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 279 NumberOfCodeBlocks, 279 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 263 ConstructedInterpolants, 0 QuantifiedInterpolants, 1397 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 11 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-12-02 16:13:41,057 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d768e11-6821-47b8-ba76-b46c169300a0/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE