./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/mix017_pso.opt_tso.opt.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_36192ca8-766c-4b72-83a5-44df4e7bc5e0/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36192ca8-766c-4b72-83a5-44df4e7bc5e0/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36192ca8-766c-4b72-83a5-44df4e7bc5e0/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36192ca8-766c-4b72-83a5-44df4e7bc5e0/bin/utaipan-verify-SwPr7d2a91/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/mix017_pso.opt_tso.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36192ca8-766c-4b72-83a5-44df4e7bc5e0/bin/utaipan-verify-SwPr7d2a91/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36192ca8-766c-4b72-83a5-44df4e7bc5e0/bin/utaipan-verify-SwPr7d2a91 --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 39f434d3f7e7749f4257e03557066c1349e963b1d489e771c14fc3ff33c9a6c7 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:52:47,322 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:52:47,458 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36192ca8-766c-4b72-83a5-44df4e7bc5e0/bin/utaipan-verify-SwPr7d2a91/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-11-24 23:52:47,469 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:52:47,470 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:52:47,527 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:52:47,528 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:52:47,529 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:52:47,531 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:52:47,537 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:52:47,538 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:52:47,540 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:52:47,540 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:52:47,543 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-24 23:52:47,543 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:52:47,544 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:52:47,544 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-24 23:52:47,545 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-24 23:52:47,546 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:52:47,546 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-24 23:52:47,547 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-24 23:52:47,548 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-24 23:52:47,549 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 23:52:47,549 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 23:52:47,550 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:52:47,551 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 23:52:47,551 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:52:47,552 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 23:52:47,553 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:52:47,553 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-24 23:52:47,555 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-24 23:52:47,555 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-24 23:52:47,555 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:52:47,556 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 23:52:47,556 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 23:52:47,556 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 23:52:47,557 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:52:47,557 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:52:47,557 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:52:47,558 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:52:47,558 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:52:47,559 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:52:47,559 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:52:47,559 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-24 23:52:47,560 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 23:52:47,560 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:52:47,561 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:52:47,561 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:52:47,561 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_36192ca8-766c-4b72-83a5-44df4e7bc5e0/bin/utaipan-verify-SwPr7d2a91/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36192ca8-766c-4b72-83a5-44df4e7bc5e0/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 39f434d3f7e7749f4257e03557066c1349e963b1d489e771c14fc3ff33c9a6c7 [2023-11-24 23:52:47,902 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:52:47,931 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:52:47,935 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:52:47,937 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:52:47,937 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:52:47,939 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36192ca8-766c-4b72-83a5-44df4e7bc5e0/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/pthread-wmm/mix017_pso.opt_tso.opt.i [2023-11-24 23:52:51,480 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:52:51,836 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:52:51,837 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36192ca8-766c-4b72-83a5-44df4e7bc5e0/sv-benchmarks/c/pthread-wmm/mix017_pso.opt_tso.opt.i [2023-11-24 23:52:51,859 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36192ca8-766c-4b72-83a5-44df4e7bc5e0/bin/utaipan-verify-SwPr7d2a91/data/d3432bbe0/3e1d1e59091b4da699c6954ce9f9ef9b/FLAGc35d836b7 [2023-11-24 23:52:51,877 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36192ca8-766c-4b72-83a5-44df4e7bc5e0/bin/utaipan-verify-SwPr7d2a91/data/d3432bbe0/3e1d1e59091b4da699c6954ce9f9ef9b [2023-11-24 23:52:51,880 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:52:51,882 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:52:51,885 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:52:51,886 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:52:51,902 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:52:51,903 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:52:51" (1/1) ... [2023-11-24 23:52:51,904 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36ba9b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:52:51, skipping insertion in model container [2023-11-24 23:52:51,905 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:52:51" (1/1) ... [2023-11-24 23:52:51,999 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:52:52,610 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:52:52,630 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:52:52,773 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:52:52,823 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:52:52,824 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:52:52,833 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:52:52,834 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:52:52 WrapperNode [2023-11-24 23:52:52,835 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:52:52,836 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:52:52,837 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:52:52,837 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:52:52,848 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:52:52" (1/1) ... [2023-11-24 23:52:52,888 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:52:52" (1/1) ... [2023-11-24 23:52:52,956 INFO L138 Inliner]: procedures = 177, calls = 70, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 171 [2023-11-24 23:52:52,957 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:52:52,958 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:52:52,958 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:52:52,959 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:52:52,971 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:52:52" (1/1) ... [2023-11-24 23:52:52,972 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:52:52" (1/1) ... [2023-11-24 23:52:52,991 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:52:52" (1/1) ... [2023-11-24 23:52:52,996 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:52:52" (1/1) ... [2023-11-24 23:52:53,009 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:52:52" (1/1) ... [2023-11-24 23:52:53,026 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:52:52" (1/1) ... [2023-11-24 23:52:53,030 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:52:52" (1/1) ... [2023-11-24 23:52:53,046 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:52:52" (1/1) ... [2023-11-24 23:52:53,052 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:52:53,054 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:52:53,054 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:52:53,054 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:52:53,055 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:52:52" (1/1) ... [2023-11-24 23:52:53,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:52:53,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36192ca8-766c-4b72-83a5-44df4e7bc5e0/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:52:53,098 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36192ca8-766c-4b72-83a5-44df4e7bc5e0/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-24 23:52:53,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36192ca8-766c-4b72-83a5-44df4e7bc5e0/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-24 23:52:53,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-24 23:52:53,160 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-24 23:52:53,160 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 23:52:53,161 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 23:52:53,163 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 23:52:53,163 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-24 23:52:53,163 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-24 23:52:53,164 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-24 23:52:53,164 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-24 23:52:53,164 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-24 23:52:53,164 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-24 23:52:53,165 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-11-24 23:52:53,166 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-11-24 23:52:53,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-24 23:52:53,166 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-24 23:52:53,167 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:52:53,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:52:53,171 WARN L213 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-24 23:52:53,440 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:52:53,443 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:52:54,130 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:52:54,493 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:52:54,493 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-24 23:52:54,494 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:52:54 BoogieIcfgContainer [2023-11-24 23:52:54,494 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:52:54,499 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 23:52:54,499 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 23:52:54,504 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 23:52:54,505 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 11:52:51" (1/3) ... [2023-11-24 23:52:54,506 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c3b8eb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:52:54, skipping insertion in model container [2023-11-24 23:52:54,506 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:52:52" (2/3) ... [2023-11-24 23:52:54,509 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c3b8eb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:52:54, skipping insertion in model container [2023-11-24 23:52:54,509 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:52:54" (3/3) ... [2023-11-24 23:52:54,511 INFO L112 eAbstractionObserver]: Analyzing ICFG mix017_pso.opt_tso.opt.i [2023-11-24 23:52:54,540 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 23:52:54,540 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2023-11-24 23:52:54,541 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-24 23:52:54,634 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-24 23:52:54,684 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 77 places, 66 transitions, 148 flow [2023-11-24 23:52:57,963 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 46247 states, 46234 states have (on average 4.478825107064066) internal successors, (207074), 46246 states have internal predecessors, (207074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:52:58,011 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 23:52:58,020 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;@72ec595b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 23:52:58,021 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2023-11-24 23:52:58,129 INFO L276 IsEmpty]: Start isEmpty. Operand has 46247 states, 46234 states have (on average 4.478825107064066) internal successors, (207074), 46246 states have internal predecessors, (207074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:52:58,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-24 23:52:58,141 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:52:58,142 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-24 23:52:58,144 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-24 23:52:58,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:52:58,165 INFO L85 PathProgramCache]: Analyzing trace with hash 14562, now seen corresponding path program 1 times [2023-11-24 23:52:58,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:52:58,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239443124] [2023-11-24 23:52:58,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:52:58,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:52:58,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:52:58,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:52:58,720 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:52:58,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239443124] [2023-11-24 23:52:58,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239443124] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:52:58,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:52:58,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 23:52:58,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525843600] [2023-11-24 23:52:58,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:52:58,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:52:58,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:52:58,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:52:58,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:52:58,874 INFO L87 Difference]: Start difference. First operand has 46247 states, 46234 states have (on average 4.478825107064066) internal successors, (207074), 46246 states have internal predecessors, (207074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:53:00,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:53:00,580 INFO L93 Difference]: Finished difference Result 43159 states and 187130 transitions. [2023-11-24 23:53:00,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:53:00,583 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2023-11-24 23:53:00,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:53:01,676 INFO L225 Difference]: With dead ends: 43159 [2023-11-24 23:53:01,677 INFO L226 Difference]: Without dead ends: 43159 [2023-11-24 23:53:01,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:53:01,687 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 51 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:53:01,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 43 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:53:02,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43159 states. [2023-11-24 23:53:04,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43159 to 43159. [2023-11-24 23:53:04,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43159 states, 43147 states have (on average 4.337033860986859) internal successors, (187130), 43158 states have internal predecessors, (187130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:53:05,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43159 states to 43159 states and 187130 transitions. [2023-11-24 23:53:05,948 INFO L78 Accepts]: Start accepts. Automaton has 43159 states and 187130 transitions. Word has length 2 [2023-11-24 23:53:05,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:53:05,949 INFO L495 AbstractCegarLoop]: Abstraction has 43159 states and 187130 transitions. [2023-11-24 23:53:05,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:53:05,950 INFO L276 IsEmpty]: Start isEmpty. Operand 43159 states and 187130 transitions. [2023-11-24 23:53:05,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-24 23:53:05,951 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:53:05,951 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-24 23:53:05,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 23:53:05,952 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-24 23:53:05,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:53:05,954 INFO L85 PathProgramCache]: Analyzing trace with hash 14563, now seen corresponding path program 1 times [2023-11-24 23:53:05,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:53:05,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189575655] [2023-11-24 23:53:05,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:53:05,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:53:05,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:53:06,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:53:06,136 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:53:06,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189575655] [2023-11-24 23:53:06,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189575655] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:53:06,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:53:06,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 23:53:06,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212734807] [2023-11-24 23:53:06,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:53:06,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:53:06,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:53:06,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:53:06,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:53:06,142 INFO L87 Difference]: Start difference. First operand 43159 states and 187130 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:53:06,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:53:06,931 INFO L93 Difference]: Finished difference Result 43158 states and 187129 transitions. [2023-11-24 23:53:06,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:53:06,932 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2023-11-24 23:53:06,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:53:07,798 INFO L225 Difference]: With dead ends: 43158 [2023-11-24 23:53:07,798 INFO L226 Difference]: Without dead ends: 43158 [2023-11-24 23:53:07,804 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:53:07,807 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 50 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:53:07,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 44 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:53:08,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43158 states. [2023-11-24 23:53:09,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43158 to 43158. [2023-11-24 23:53:09,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43158 states, 43147 states have (on average 4.337010684404477) internal successors, (187129), 43157 states have internal predecessors, (187129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:53:10,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43158 states to 43158 states and 187129 transitions. [2023-11-24 23:53:10,397 INFO L78 Accepts]: Start accepts. Automaton has 43158 states and 187129 transitions. Word has length 2 [2023-11-24 23:53:10,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:53:10,398 INFO L495 AbstractCegarLoop]: Abstraction has 43158 states and 187129 transitions. [2023-11-24 23:53:10,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:53:10,398 INFO L276 IsEmpty]: Start isEmpty. Operand 43158 states and 187129 transitions. [2023-11-24 23:53:10,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-24 23:53:10,399 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:53:10,399 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-24 23:53:10,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-24 23:53:10,400 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-24 23:53:10,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:53:10,401 INFO L85 PathProgramCache]: Analyzing trace with hash 434265093, now seen corresponding path program 1 times [2023-11-24 23:53:10,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:53:10,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315431882] [2023-11-24 23:53:10,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:53:10,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:53:10,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:53:10,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:53:10,490 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:53:10,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315431882] [2023-11-24 23:53:10,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315431882] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:53:10,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:53:10,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:53:10,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337082778] [2023-11-24 23:53:10,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:53:10,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:53:10,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:53:10,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:53:10,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:53:10,493 INFO L87 Difference]: Start difference. First operand 43158 states and 187129 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:53:11,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:53:11,534 INFO L93 Difference]: Finished difference Result 43151 states and 187116 transitions. [2023-11-24 23:53:11,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:53:11,534 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-24 23:53:11,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:53:11,852 INFO L225 Difference]: With dead ends: 43151 [2023-11-24 23:53:11,852 INFO L226 Difference]: Without dead ends: 43151 [2023-11-24 23:53:11,853 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:53:11,854 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 47 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:53:11,855 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 48 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:53:12,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43151 states. [2023-11-24 23:53:13,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43151 to 43151. [2023-11-24 23:53:13,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43151 states, 43141 states have (on average 4.33731253332097) internal successors, (187116), 43150 states have internal predecessors, (187116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:53:13,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43151 states to 43151 states and 187116 transitions. [2023-11-24 23:53:13,844 INFO L78 Accepts]: Start accepts. Automaton has 43151 states and 187116 transitions. Word has length 5 [2023-11-24 23:53:13,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:53:13,845 INFO L495 AbstractCegarLoop]: Abstraction has 43151 states and 187116 transitions. [2023-11-24 23:53:13,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:53:13,845 INFO L276 IsEmpty]: Start isEmpty. Operand 43151 states and 187116 transitions. [2023-11-24 23:53:13,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-24 23:53:13,845 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:53:13,846 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-24 23:53:13,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-24 23:53:13,846 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-24 23:53:13,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:53:13,847 INFO L85 PathProgramCache]: Analyzing trace with hash 434265094, now seen corresponding path program 1 times [2023-11-24 23:53:13,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:53:13,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088640285] [2023-11-24 23:53:13,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:53:13,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:53:13,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:53:13,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:53:13,924 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:53:13,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088640285] [2023-11-24 23:53:13,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088640285] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:53:13,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:53:13,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:53:13,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753741079] [2023-11-24 23:53:13,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:53:13,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:53:13,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:53:13,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:53:13,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:53:13,927 INFO L87 Difference]: Start difference. First operand 43151 states and 187116 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:53:14,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:53:14,922 INFO L93 Difference]: Finished difference Result 43144 states and 187103 transitions. [2023-11-24 23:53:14,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:53:14,922 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-24 23:53:14,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:53:15,171 INFO L225 Difference]: With dead ends: 43144 [2023-11-24 23:53:15,171 INFO L226 Difference]: Without dead ends: 43144 [2023-11-24 23:53:15,171 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:53:15,173 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 46 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:53:15,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 49 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:53:15,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43144 states. [2023-11-24 23:53:16,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43144 to 43144. [2023-11-24 23:53:16,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43144 states, 43135 states have (on average 4.337614466210733) internal successors, (187103), 43143 states have internal predecessors, (187103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:53:16,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43144 states to 43144 states and 187103 transitions. [2023-11-24 23:53:16,847 INFO L78 Accepts]: Start accepts. Automaton has 43144 states and 187103 transitions. Word has length 5 [2023-11-24 23:53:16,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:53:16,847 INFO L495 AbstractCegarLoop]: Abstraction has 43144 states and 187103 transitions. [2023-11-24 23:53:16,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:53:16,848 INFO L276 IsEmpty]: Start isEmpty. Operand 43144 states and 187103 transitions. [2023-11-24 23:53:16,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-24 23:53:16,848 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:53:16,849 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:53:16,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-24 23:53:16,849 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-24 23:53:16,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:53:16,850 INFO L85 PathProgramCache]: Analyzing trace with hash 750343322, now seen corresponding path program 1 times [2023-11-24 23:53:16,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:53:16,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200956694] [2023-11-24 23:53:16,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:53:16,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:53:16,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:53:16,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:53:16,934 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:53:16,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200956694] [2023-11-24 23:53:16,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200956694] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:53:16,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:53:16,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:53:16,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444883563] [2023-11-24 23:53:16,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:53:16,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:53:16,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:53:16,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:53:16,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:53:16,937 INFO L87 Difference]: Start difference. First operand 43144 states and 187103 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:53:18,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:53:18,158 INFO L93 Difference]: Finished difference Result 43095 states and 186970 transitions. [2023-11-24 23:53:18,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:53:18,159 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-24 23:53:18,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:53:18,455 INFO L225 Difference]: With dead ends: 43095 [2023-11-24 23:53:18,455 INFO L226 Difference]: Without dead ends: 43095 [2023-11-24 23:53:18,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:53:18,457 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 43 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:53:18,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 53 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:53:18,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43095 states. [2023-11-24 23:53:20,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43095 to 43095. [2023-11-24 23:53:20,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43095 states, 43087 states have (on average 4.33935989973774) internal successors, (186970), 43094 states have internal predecessors, (186970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:53:20,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43095 states to 43095 states and 186970 transitions. [2023-11-24 23:53:20,639 INFO L78 Accepts]: Start accepts. Automaton has 43095 states and 186970 transitions. Word has length 8 [2023-11-24 23:53:20,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:53:20,639 INFO L495 AbstractCegarLoop]: Abstraction has 43095 states and 186970 transitions. [2023-11-24 23:53:20,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:53:20,640 INFO L276 IsEmpty]: Start isEmpty. Operand 43095 states and 186970 transitions. [2023-11-24 23:53:20,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-24 23:53:20,641 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:53:20,641 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:53:20,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-24 23:53:20,641 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-24 23:53:20,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:53:20,642 INFO L85 PathProgramCache]: Analyzing trace with hash 750343323, now seen corresponding path program 1 times [2023-11-24 23:53:20,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:53:20,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509356601] [2023-11-24 23:53:20,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:53:20,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:53:20,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:53:20,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:53:20,726 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:53:20,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509356601] [2023-11-24 23:53:20,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509356601] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:53:20,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:53:20,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:53:20,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895602638] [2023-11-24 23:53:20,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:53:20,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:53:20,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:53:20,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:53:20,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:53:20,729 INFO L87 Difference]: Start difference. First operand 43095 states and 186970 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:53:21,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:53:21,816 INFO L93 Difference]: Finished difference Result 43046 states and 186837 transitions. [2023-11-24 23:53:21,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:53:21,817 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-24 23:53:21,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:53:22,165 INFO L225 Difference]: With dead ends: 43046 [2023-11-24 23:53:22,165 INFO L226 Difference]: Without dead ends: 43046 [2023-11-24 23:53:22,165 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:53:22,167 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 42 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:53:22,167 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 54 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:53:22,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43046 states. [2023-11-24 23:53:23,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43046 to 43046. [2023-11-24 23:53:23,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43046 states, 43039 states have (on average 4.341109226515486) internal successors, (186837), 43045 states have internal predecessors, (186837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:53:23,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43046 states to 43046 states and 186837 transitions. [2023-11-24 23:53:23,974 INFO L78 Accepts]: Start accepts. Automaton has 43046 states and 186837 transitions. Word has length 8 [2023-11-24 23:53:23,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:53:23,974 INFO L495 AbstractCegarLoop]: Abstraction has 43046 states and 186837 transitions. [2023-11-24 23:53:23,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:53:23,975 INFO L276 IsEmpty]: Start isEmpty. Operand 43046 states and 186837 transitions. [2023-11-24 23:53:23,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-24 23:53:23,977 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:53:23,977 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:53:23,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-24 23:53:23,977 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-24 23:53:23,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:53:23,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1826419770, now seen corresponding path program 1 times [2023-11-24 23:53:23,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:53:23,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066766793] [2023-11-24 23:53:23,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:53:23,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:53:24,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:53:24,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:53:24,058 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:53:24,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066766793] [2023-11-24 23:53:24,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066766793] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:53:24,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:53:24,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:53:24,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417228047] [2023-11-24 23:53:24,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:53:24,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:53:24,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:53:24,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:53:24,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:53:24,062 INFO L87 Difference]: Start difference. First operand 43046 states and 186837 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:53:24,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:53:24,514 INFO L93 Difference]: Finished difference Result 42703 states and 185612 transitions. [2023-11-24 23:53:24,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:53:24,515 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-11-24 23:53:24,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:53:24,816 INFO L225 Difference]: With dead ends: 42703 [2023-11-24 23:53:24,816 INFO L226 Difference]: Without dead ends: 42703 [2023-11-24 23:53:24,817 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:53:24,819 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 39 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:53:24,819 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 57 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:53:25,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42703 states. [2023-11-24 23:53:26,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42703 to 42703. [2023-11-24 23:53:27,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42703 states, 42697 states have (on average 4.347190669133663) internal successors, (185612), 42702 states have internal predecessors, (185612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:53:27,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42703 states to 42703 states and 185612 transitions. [2023-11-24 23:53:27,928 INFO L78 Accepts]: Start accepts. Automaton has 42703 states and 185612 transitions. Word has length 11 [2023-11-24 23:53:27,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:53:27,929 INFO L495 AbstractCegarLoop]: Abstraction has 42703 states and 185612 transitions. [2023-11-24 23:53:27,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:53:27,929 INFO L276 IsEmpty]: Start isEmpty. Operand 42703 states and 185612 transitions. [2023-11-24 23:53:27,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-24 23:53:27,932 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:53:27,932 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:53:27,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-24 23:53:27,933 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-24 23:53:27,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:53:27,933 INFO L85 PathProgramCache]: Analyzing trace with hash -1826419769, now seen corresponding path program 1 times [2023-11-24 23:53:27,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:53:27,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16716178] [2023-11-24 23:53:27,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:53:27,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:53:28,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:53:28,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:53:28,114 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:53:28,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16716178] [2023-11-24 23:53:28,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16716178] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:53:28,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:53:28,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:53:28,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612114080] [2023-11-24 23:53:28,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:53:28,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:53:28,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:53:28,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:53:28,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:53:28,117 INFO L87 Difference]: Start difference. First operand 42703 states and 185612 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:53:28,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:53:28,594 INFO L93 Difference]: Finished difference Result 42360 states and 184387 transitions. [2023-11-24 23:53:28,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:53:28,595 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-11-24 23:53:28,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:53:28,790 INFO L225 Difference]: With dead ends: 42360 [2023-11-24 23:53:28,790 INFO L226 Difference]: Without dead ends: 42360 [2023-11-24 23:53:28,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:53:28,791 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 38 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:53:28,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 58 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:53:28,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42360 states. [2023-11-24 23:53:30,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42360 to 42360. [2023-11-24 23:53:30,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42360 states, 42355 states have (on average 4.3533703222760005) internal successors, (184387), 42359 states have internal predecessors, (184387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:53:30,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42360 states to 42360 states and 184387 transitions. [2023-11-24 23:53:30,665 INFO L78 Accepts]: Start accepts. Automaton has 42360 states and 184387 transitions. Word has length 11 [2023-11-24 23:53:30,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:53:30,666 INFO L495 AbstractCegarLoop]: Abstraction has 42360 states and 184387 transitions. [2023-11-24 23:53:30,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:53:30,666 INFO L276 IsEmpty]: Start isEmpty. Operand 42360 states and 184387 transitions. [2023-11-24 23:53:30,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-24 23:53:30,670 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:53:30,670 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:53:30,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-24 23:53:30,671 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting P3Err0ASSERT_VIOLATIONMEMORY_LEAK === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-24 23:53:30,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:53:30,671 INFO L85 PathProgramCache]: Analyzing trace with hash 2069753502, now seen corresponding path program 1 times [2023-11-24 23:53:30,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:53:30,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966870999] [2023-11-24 23:53:30,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:53:30,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:53:30,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:53:30,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:53:30,873 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:53:30,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966870999] [2023-11-24 23:53:30,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966870999] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:53:30,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:53:30,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 23:53:30,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389769382] [2023-11-24 23:53:30,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:53:30,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:53:30,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:53:30,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:53:30,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:53:30,878 INFO L87 Difference]: Start difference. First operand 42360 states and 184387 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:53:31,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:53:31,920 INFO L93 Difference]: Finished difference Result 37558 states and 162778 transitions. [2023-11-24 23:53:31,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:53:31,933 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-11-24 23:53:31,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:53:32,361 INFO L225 Difference]: With dead ends: 37558 [2023-11-24 23:53:32,361 INFO L226 Difference]: Without dead ends: 36872 [2023-11-24 23:53:32,362 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:53:32,362 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 29 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:53:32,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 49 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:53:32,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36872 states. [2023-11-24 23:53:33,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36872 to 36872. [2023-11-24 23:53:33,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36872 states, 36870 states have (on average 4.339164632492541) internal successors, (159985), 36871 states have internal predecessors, (159985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:53:34,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36872 states to 36872 states and 159985 transitions. [2023-11-24 23:53:34,286 INFO L78 Accepts]: Start accepts. Automaton has 36872 states and 159985 transitions. Word has length 14 [2023-11-24 23:53:34,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:53:34,287 INFO L495 AbstractCegarLoop]: Abstraction has 36872 states and 159985 transitions. [2023-11-24 23:53:34,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:53:34,287 INFO L276 IsEmpty]: Start isEmpty. Operand 36872 states and 159985 transitions. [2023-11-24 23:53:34,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-24 23:53:34,313 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:53:34,313 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:53:34,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-24 23:53:34,313 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-24 23:53:34,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:53:34,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1185510886, now seen corresponding path program 1 times [2023-11-24 23:53:34,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:53:34,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083307130] [2023-11-24 23:53:34,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:53:34,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:53:34,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat