./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/mix023_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 527bcce2 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25175ef6-34ea-42b9-926f-580888cba993/bin/utaipan-verify-QoSU8krkJ5/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25175ef6-34ea-42b9-926f-580888cba993/bin/utaipan-verify-QoSU8krkJ5/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25175ef6-34ea-42b9-926f-580888cba993/bin/utaipan-verify-QoSU8krkJ5/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25175ef6-34ea-42b9-926f-580888cba993/bin/utaipan-verify-QoSU8krkJ5/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/mix023_tso.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25175ef6-34ea-42b9-926f-580888cba993/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25175ef6-34ea-42b9-926f-580888cba993/bin/utaipan-verify-QoSU8krkJ5 --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 19245e5542f28ce8a07a1858e0d4c05190b543a3d82e804c6a4eebc044c13d81 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 19:54:08,354 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 19:54:08,480 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25175ef6-34ea-42b9-926f-580888cba993/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-11-21 19:54:08,485 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 19:54:08,486 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 19:54:08,527 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 19:54:08,527 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 19:54:08,528 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 19:54:08,529 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 19:54:08,534 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 19:54:08,534 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-21 19:54:08,535 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-21 19:54:08,535 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-21 19:54:08,537 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-21 19:54:08,538 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-21 19:54:08,538 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-21 19:54:08,538 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-21 19:54:08,539 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-21 19:54:08,540 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-21 19:54:08,540 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-21 19:54:08,540 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-21 19:54:08,541 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-21 19:54:08,542 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 19:54:08,542 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 19:54:08,543 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 19:54:08,544 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 19:54:08,544 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 19:54:08,545 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 19:54:08,545 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 19:54:08,545 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-21 19:54:08,547 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-21 19:54:08,547 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-21 19:54:08,547 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 19:54:08,548 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-21 19:54:08,548 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 19:54:08,548 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 19:54:08,548 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 19:54:08,549 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 19:54:08,549 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 19:54:08,549 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 19:54:08,550 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 19:54:08,550 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 19:54:08,550 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 19:54:08,551 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-21 19:54:08,551 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 19:54:08,551 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 19:54:08,552 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-21 19:54:08,552 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 19:54:08,552 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_25175ef6-34ea-42b9-926f-580888cba993/bin/utaipan-verify-QoSU8krkJ5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25175ef6-34ea-42b9-926f-580888cba993/bin/utaipan-verify-QoSU8krkJ5 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 19245e5542f28ce8a07a1858e0d4c05190b543a3d82e804c6a4eebc044c13d81 [2023-11-21 19:54:08,886 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 19:54:08,919 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 19:54:08,923 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 19:54:08,924 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 19:54:08,925 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 19:54:08,926 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25175ef6-34ea-42b9-926f-580888cba993/bin/utaipan-verify-QoSU8krkJ5/../../sv-benchmarks/c/pthread-wmm/mix023_tso.i [2023-11-21 19:54:12,079 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 19:54:12,533 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 19:54:12,534 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25175ef6-34ea-42b9-926f-580888cba993/sv-benchmarks/c/pthread-wmm/mix023_tso.i [2023-11-21 19:54:12,555 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25175ef6-34ea-42b9-926f-580888cba993/bin/utaipan-verify-QoSU8krkJ5/data/93b2b999d/9671e95a3619485d8ce9b96e7784b903/FLAG846627937 [2023-11-21 19:54:12,570 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25175ef6-34ea-42b9-926f-580888cba993/bin/utaipan-verify-QoSU8krkJ5/data/93b2b999d/9671e95a3619485d8ce9b96e7784b903 [2023-11-21 19:54:12,573 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 19:54:12,574 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 19:54:12,576 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 19:54:12,576 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 19:54:12,582 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 19:54:12,583 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 07:54:12" (1/1) ... [2023-11-21 19:54:12,584 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ddffb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:54:12, skipping insertion in model container [2023-11-21 19:54:12,584 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 07:54:12" (1/1) ... [2023-11-21 19:54:12,651 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 19:54:13,111 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 19:54:13,129 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 19:54:13,272 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 19:54:13,313 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:54:13,313 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:54:13,321 INFO L206 MainTranslator]: Completed translation [2023-11-21 19:54:13,322 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:54:13 WrapperNode [2023-11-21 19:54:13,322 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 19:54:13,323 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 19:54:13,323 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 19:54:13,324 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 19:54:13,331 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:54:13" (1/1) ... [2023-11-21 19:54:13,373 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:54:13" (1/1) ... [2023-11-21 19:54:13,434 INFO L138 Inliner]: procedures = 177, calls = 73, calls flagged for inlining = 7, calls inlined = 9, statements flattened = 290 [2023-11-21 19:54:13,435 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 19:54:13,436 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 19:54:13,436 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 19:54:13,436 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 19:54:13,445 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:54:13" (1/1) ... [2023-11-21 19:54:13,446 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:54:13" (1/1) ... [2023-11-21 19:54:13,450 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:54:13" (1/1) ... [2023-11-21 19:54:13,451 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:54:13" (1/1) ... [2023-11-21 19:54:13,466 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:54:13" (1/1) ... [2023-11-21 19:54:13,469 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:54:13" (1/1) ... [2023-11-21 19:54:13,487 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:54:13" (1/1) ... [2023-11-21 19:54:13,490 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:54:13" (1/1) ... [2023-11-21 19:54:13,496 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 19:54:13,497 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 19:54:13,497 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 19:54:13,497 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 19:54:13,498 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:54:13" (1/1) ... [2023-11-21 19:54:13,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 19:54:13,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25175ef6-34ea-42b9-926f-580888cba993/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:54:13,548 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25175ef6-34ea-42b9-926f-580888cba993/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 19:54:13,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25175ef6-34ea-42b9-926f-580888cba993/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 19:54:13,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-21 19:54:13,610 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-21 19:54:13,610 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 19:54:13,611 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 19:54:13,611 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 19:54:13,611 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-21 19:54:13,611 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-21 19:54:13,612 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-21 19:54:13,612 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-21 19:54:13,612 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-21 19:54:13,612 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-21 19:54:13,613 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-11-21 19:54:13,613 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-11-21 19:54:13,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-21 19:54:13,613 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-21 19:54:13,614 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 19:54:13,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 19:54:13,615 WARN L212 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-21 19:54:13,771 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 19:54:13,774 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 19:54:14,289 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 19:54:14,770 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 19:54:14,770 INFO L308 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-21 19:54:14,772 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 07:54:14 BoogieIcfgContainer [2023-11-21 19:54:14,772 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 19:54:14,774 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 19:54:14,774 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 19:54:14,777 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 19:54:14,778 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 07:54:12" (1/3) ... [2023-11-21 19:54:14,779 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b4bec54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 07:54:14, skipping insertion in model container [2023-11-21 19:54:14,779 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:54:13" (2/3) ... [2023-11-21 19:54:14,781 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b4bec54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 07:54:14, skipping insertion in model container [2023-11-21 19:54:14,781 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 07:54:14" (3/3) ... [2023-11-21 19:54:14,783 INFO L112 eAbstractionObserver]: Analyzing ICFG mix023_tso.i [2023-11-21 19:54:14,802 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 19:54:14,803 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-11-21 19:54:14,803 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-21 19:54:14,885 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-21 19:54:14,921 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 79 places, 68 transitions, 152 flow [2023-11-21 19:54:17,751 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 60331 states, 60308 states have (on average 4.509650460967036) internal successors, (271968), 60330 states have internal predecessors, (271968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:54:17,785 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 19:54:17,793 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;@3300b515, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 19:54:17,793 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2023-11-21 19:54:18,058 INFO L276 IsEmpty]: Start isEmpty. Operand has 60331 states, 60308 states have (on average 4.509650460967036) internal successors, (271968), 60330 states have internal predecessors, (271968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:54:18,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-21 19:54:18,066 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:54:18,067 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-21 19:54:18,068 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-21 19:54:18,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:54:18,077 INFO L85 PathProgramCache]: Analyzing trace with hash 21563, now seen corresponding path program 1 times [2023-11-21 19:54:18,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:54:18,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327428330] [2023-11-21 19:54:18,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:54:18,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:54:18,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:54:18,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:54:18,424 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:54:18,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327428330] [2023-11-21 19:54:18,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327428330] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:54:18,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:54:18,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 19:54:18,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074315046] [2023-11-21 19:54:18,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:54:18,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:54:18,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:54:18,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:54:18,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:54:18,577 INFO L87 Difference]: Start difference. First operand has 60331 states, 60308 states have (on average 4.509650460967036) internal successors, (271968), 60330 states have internal predecessors, (271968), 0 states have call successors, (0), 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) [2023-11-21 19:54:20,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:54:20,351 INFO L93 Difference]: Finished difference Result 56361 states and 246200 transitions. [2023-11-21 19:54:20,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:54:20,357 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 [2023-11-21 19:54:20,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:54:21,522 INFO L225 Difference]: With dead ends: 56361 [2023-11-21 19:54:21,522 INFO L226 Difference]: Without dead ends: 56361 [2023-11-21 19:54:21,524 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 [2023-11-21 19:54:21,529 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 53 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-21 19:54:21,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 36 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-21 19:54:21,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56361 states. [2023-11-21 19:54:24,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56361 to 56361. [2023-11-21 19:54:24,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56361 states, 56339 states have (on average 4.3699746179378405) internal successors, (246200), 56360 states have internal predecessors, (246200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:54:25,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56361 states to 56361 states and 246200 transitions. [2023-11-21 19:54:25,434 INFO L78 Accepts]: Start accepts. Automaton has 56361 states and 246200 transitions. Word has length 2 [2023-11-21 19:54:25,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:54:25,434 INFO L495 AbstractCegarLoop]: Abstraction has 56361 states and 246200 transitions. [2023-11-21 19:54:25,435 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) [2023-11-21 19:54:25,435 INFO L276 IsEmpty]: Start isEmpty. Operand 56361 states and 246200 transitions. [2023-11-21 19:54:25,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-21 19:54:25,435 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:54:25,436 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-21 19:54:25,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 19:54:25,436 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-21 19:54:25,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:54:25,437 INFO L85 PathProgramCache]: Analyzing trace with hash 21564, now seen corresponding path program 1 times [2023-11-21 19:54:25,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:54:25,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387159919] [2023-11-21 19:54:25,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:54:25,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:54:25,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:54:25,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:54:25,620 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:54:25,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387159919] [2023-11-21 19:54:25,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387159919] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:54:25,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:54:25,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 19:54:25,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728754703] [2023-11-21 19:54:25,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:54:25,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:54:25,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:54:25,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:54:25,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:54:25,625 INFO L87 Difference]: Start difference. First operand 56361 states and 246200 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) [2023-11-21 19:54:26,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:54:26,938 INFO L93 Difference]: Finished difference Result 56360 states and 246199 transitions. [2023-11-21 19:54:26,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:54:26,939 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 [2023-11-21 19:54:26,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:54:27,497 INFO L225 Difference]: With dead ends: 56360 [2023-11-21 19:54:27,497 INFO L226 Difference]: Without dead ends: 56360 [2023-11-21 19:54:27,503 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 [2023-11-21 19:54:27,505 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 52 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-21 19:54:27,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 37 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-21 19:54:27,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56360 states. [2023-11-21 19:54:30,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56360 to 56360. [2023-11-21 19:54:30,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56360 states, 56339 states have (on average 4.369956868244023) internal successors, (246199), 56359 states have internal predecessors, (246199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:54:31,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56360 states to 56360 states and 246199 transitions. [2023-11-21 19:54:31,405 INFO L78 Accepts]: Start accepts. Automaton has 56360 states and 246199 transitions. Word has length 2 [2023-11-21 19:54:31,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:54:31,406 INFO L495 AbstractCegarLoop]: Abstraction has 56360 states and 246199 transitions. [2023-11-21 19:54:31,409 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) [2023-11-21 19:54:31,409 INFO L276 IsEmpty]: Start isEmpty. Operand 56360 states and 246199 transitions. [2023-11-21 19:54:31,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-21 19:54:31,419 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:54:31,419 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-21 19:54:31,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-21 19:54:31,429 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-21 19:54:31,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:54:31,430 INFO L85 PathProgramCache]: Analyzing trace with hash 643055846, now seen corresponding path program 1 times [2023-11-21 19:54:31,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:54:31,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339390084] [2023-11-21 19:54:31,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:54:31,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:54:31,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:54:31,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:54:31,542 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:54:31,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339390084] [2023-11-21 19:54:31,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339390084] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:54:31,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:54:31,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 19:54:31,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969280257] [2023-11-21 19:54:31,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:54:31,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:54:31,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:54:31,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:54:31,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:54:31,546 INFO L87 Difference]: Start difference. First operand 56360 states and 246199 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) [2023-11-21 19:54:32,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:54:32,339 INFO L93 Difference]: Finished difference Result 56353 states and 246186 transitions. [2023-11-21 19:54:32,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:54:32,340 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 [2023-11-21 19:54:32,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:54:32,898 INFO L225 Difference]: With dead ends: 56353 [2023-11-21 19:54:32,898 INFO L226 Difference]: Without dead ends: 56353 [2023-11-21 19:54:32,899 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 [2023-11-21 19:54:32,900 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 49 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-21 19:54:32,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 40 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-21 19:54:33,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56353 states. [2023-11-21 19:54:35,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56353 to 56353. [2023-11-21 19:54:35,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56353 states, 56333 states have (on average 4.3701915395949085) internal successors, (246186), 56352 states have internal predecessors, (246186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:54:36,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56353 states to 56353 states and 246186 transitions. [2023-11-21 19:54:36,145 INFO L78 Accepts]: Start accepts. Automaton has 56353 states and 246186 transitions. Word has length 5 [2023-11-21 19:54:36,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:54:36,145 INFO L495 AbstractCegarLoop]: Abstraction has 56353 states and 246186 transitions. [2023-11-21 19:54:36,146 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) [2023-11-21 19:54:36,146 INFO L276 IsEmpty]: Start isEmpty. Operand 56353 states and 246186 transitions. [2023-11-21 19:54:36,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-21 19:54:36,147 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:54:36,147 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-21 19:54:36,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-21 19:54:36,148 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-21 19:54:36,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:54:36,149 INFO L85 PathProgramCache]: Analyzing trace with hash 643055847, now seen corresponding path program 1 times [2023-11-21 19:54:36,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:54:36,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018120677] [2023-11-21 19:54:36,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:54:36,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:54:36,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:54:36,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:54:36,273 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:54:36,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018120677] [2023-11-21 19:54:36,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018120677] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:54:36,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:54:36,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 19:54:36,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300240840] [2023-11-21 19:54:36,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:54:36,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:54:36,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:54:36,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:54:36,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:54:36,276 INFO L87 Difference]: Start difference. First operand 56353 states and 246186 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) [2023-11-21 19:54:37,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:54:37,682 INFO L93 Difference]: Finished difference Result 56346 states and 246173 transitions. [2023-11-21 19:54:37,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:54:37,682 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 [2023-11-21 19:54:37,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:54:38,051 INFO L225 Difference]: With dead ends: 56346 [2023-11-21 19:54:38,051 INFO L226 Difference]: Without dead ends: 56346 [2023-11-21 19:54:38,051 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 [2023-11-21 19:54:38,052 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 48 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 19:54:38,053 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 41 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 19:54:38,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56346 states. [2023-11-21 19:54:40,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56346 to 56346. [2023-11-21 19:54:40,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56346 states, 56327 states have (on average 4.3704262609405795) internal successors, (246173), 56345 states have internal predecessors, (246173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:54:40,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56346 states to 56346 states and 246173 transitions. [2023-11-21 19:54:40,707 INFO L78 Accepts]: Start accepts. Automaton has 56346 states and 246173 transitions. Word has length 5 [2023-11-21 19:54:40,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:54:40,708 INFO L495 AbstractCegarLoop]: Abstraction has 56346 states and 246173 transitions. [2023-11-21 19:54:40,708 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) [2023-11-21 19:54:40,708 INFO L276 IsEmpty]: Start isEmpty. Operand 56346 states and 246173 transitions. [2023-11-21 19:54:40,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-21 19:54:40,709 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:54:40,710 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:54:40,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-21 19:54:40,710 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-21 19:54:40,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:54:40,711 INFO L85 PathProgramCache]: Analyzing trace with hash 1723235369, now seen corresponding path program 1 times [2023-11-21 19:54:40,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:54:40,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980583126] [2023-11-21 19:54:40,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:54:40,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:54:41,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:54:41,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:54:41,623 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:54:41,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980583126] [2023-11-21 19:54:41,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980583126] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:54:41,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:54:41,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 19:54:41,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077512382] [2023-11-21 19:54:41,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:54:41,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:54:41,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:54:41,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:54:41,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:54:41,627 INFO L87 Difference]: Start difference. First operand 56346 states and 246173 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) [2023-11-21 19:54:42,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:54:42,365 INFO L93 Difference]: Finished difference Result 56283 states and 246000 transitions. [2023-11-21 19:54:42,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:54:42,366 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 [2023-11-21 19:54:42,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:54:42,694 INFO L225 Difference]: With dead ends: 56283 [2023-11-21 19:54:42,694 INFO L226 Difference]: Without dead ends: 56283 [2023-11-21 19:54:42,694 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 [2023-11-21 19:54:42,695 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 45 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-21 19:54:42,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 43 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-21 19:54:42,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56283 states. [2023-11-21 19:54:44,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56283 to 56283. [2023-11-21 19:54:44,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56283 states, 56266 states have (on average 4.3720897167028046) internal successors, (246000), 56282 states have internal predecessors, (246000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:54:45,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56283 states to 56283 states and 246000 transitions. [2023-11-21 19:54:45,985 INFO L78 Accepts]: Start accepts. Automaton has 56283 states and 246000 transitions. Word has length 8 [2023-11-21 19:54:45,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:54:45,986 INFO L495 AbstractCegarLoop]: Abstraction has 56283 states and 246000 transitions. [2023-11-21 19:54:45,986 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) [2023-11-21 19:54:45,986 INFO L276 IsEmpty]: Start isEmpty. Operand 56283 states and 246000 transitions. [2023-11-21 19:54:45,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-21 19:54:45,987 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:54:45,987 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:54:45,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-21 19:54:45,988 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-21 19:54:45,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:54:45,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1723235370, now seen corresponding path program 1 times [2023-11-21 19:54:45,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:54:45,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432563294] [2023-11-21 19:54:45,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:54:45,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:54:46,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:54:46,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:54:46,114 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:54:46,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432563294] [2023-11-21 19:54:46,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432563294] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:54:46,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:54:46,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 19:54:46,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966530354] [2023-11-21 19:54:46,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:54:46,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:54:46,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:54:46,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:54:46,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:54:46,123 INFO L87 Difference]: Start difference. First operand 56283 states and 246000 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) [2023-11-21 19:54:46,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:54:46,715 INFO L93 Difference]: Finished difference Result 56220 states and 245827 transitions. [2023-11-21 19:54:46,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:54:46,716 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 [2023-11-21 19:54:46,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:54:47,038 INFO L225 Difference]: With dead ends: 56220 [2023-11-21 19:54:47,038 INFO L226 Difference]: Without dead ends: 56220 [2023-11-21 19:54:47,038 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 [2023-11-21 19:54:47,039 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 44 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 19:54:47,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 44 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 19:54:47,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56220 states. [2023-11-21 19:54:49,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56220 to 56220. [2023-11-21 19:54:49,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56220 states, 56205 states have (on average 4.373756783204342) internal successors, (245827), 56219 states have internal predecessors, (245827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:54:50,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56220 states to 56220 states and 245827 transitions. [2023-11-21 19:54:50,632 INFO L78 Accepts]: Start accepts. Automaton has 56220 states and 245827 transitions. Word has length 8 [2023-11-21 19:54:50,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:54:50,632 INFO L495 AbstractCegarLoop]: Abstraction has 56220 states and 245827 transitions. [2023-11-21 19:54:50,632 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) [2023-11-21 19:54:50,632 INFO L276 IsEmpty]: Start isEmpty. Operand 56220 states and 245827 transitions. [2023-11-21 19:54:50,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-21 19:54:50,633 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:54:50,633 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:54:50,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-21 19:54:50,633 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting P1Err0ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-21 19:54:50,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:54:50,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1723237501, now seen corresponding path program 1 times [2023-11-21 19:54:50,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:54:50,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687164742] [2023-11-21 19:54:50,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:54:50,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:54:50,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:54:50,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:54:50,811 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:54:50,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687164742] [2023-11-21 19:54:50,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687164742] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:54:50,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:54:50,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 19:54:50,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687119608] [2023-11-21 19:54:50,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:54:50,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:54:50,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:54:50,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:54:50,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:54:50,814 INFO L87 Difference]: Start difference. First operand 56220 states and 245827 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) [2023-11-21 19:54:51,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:54:51,381 INFO L93 Difference]: Finished difference Result 49780 states and 216878 transitions. [2023-11-21 19:54:51,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:54:51,382 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 [2023-11-21 19:54:51,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:54:51,754 INFO L225 Difference]: With dead ends: 49780 [2023-11-21 19:54:51,755 INFO L226 Difference]: Without dead ends: 49192 [2023-11-21 19:54:51,755 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 [2023-11-21 19:54:51,756 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 36 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 19:54:51,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 47 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 19:54:51,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49192 states. [2023-11-21 19:54:53,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49192 to 49192. [2023-11-21 19:54:53,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49192 states, 49185 states have (on average 4.359052556673783) internal successors, (214400), 49191 states have internal predecessors, (214400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:54:54,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49192 states to 49192 states and 214400 transitions. [2023-11-21 19:54:54,985 INFO L78 Accepts]: Start accepts. Automaton has 49192 states and 214400 transitions. Word has length 8 [2023-11-21 19:54:54,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:54:54,986 INFO L495 AbstractCegarLoop]: Abstraction has 49192 states and 214400 transitions. [2023-11-21 19:54:54,986 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) [2023-11-21 19:54:54,988 INFO L276 IsEmpty]: Start isEmpty. Operand 49192 states and 214400 transitions. [2023-11-21 19:54:54,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-21 19:54:54,992 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:54:54,992 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:54:54,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-21 19:54:54,993 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-21 19:54:54,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:54:54,994 INFO L85 PathProgramCache]: Analyzing trace with hash -838545296, now seen corresponding path program 1 times [2023-11-21 19:54:54,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:54:54,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176231759] [2023-11-21 19:54:54,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:54:54,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:54:55,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:54:55,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:54:55,067 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:54:55,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176231759] [2023-11-21 19:54:55,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176231759] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:54:55,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:54:55,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 19:54:55,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188380819] [2023-11-21 19:54:55,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:54:55,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:54:55,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:54:55,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:54:55,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:54:55,069 INFO L87 Difference]: Start difference. First operand 49192 states and 214400 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) [2023-11-21 19:54:55,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:54:55,484 INFO L93 Difference]: Finished difference Result 48800 states and 212993 transitions. [2023-11-21 19:54:55,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:54:55,484 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 [2023-11-21 19:54:55,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:54:55,781 INFO L225 Difference]: With dead ends: 48800 [2023-11-21 19:54:55,782 INFO L226 Difference]: Without dead ends: 48800 [2023-11-21 19:54:55,782 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 [2023-11-21 19:54:55,784 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 40 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 19:54:55,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 47 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 19:54:55,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48800 states.