./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/mix036_power.opt_rmo.opt.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_630ec73a-6f9f-4594-9b9c-8a015bd0f516/bin/utaipan-verify-QoSU8krkJ5/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630ec73a-6f9f-4594-9b9c-8a015bd0f516/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_630ec73a-6f9f-4594-9b9c-8a015bd0f516/bin/utaipan-verify-QoSU8krkJ5/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630ec73a-6f9f-4594-9b9c-8a015bd0f516/bin/utaipan-verify-QoSU8krkJ5/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/mix036_power.opt_rmo.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630ec73a-6f9f-4594-9b9c-8a015bd0f516/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_630ec73a-6f9f-4594-9b9c-8a015bd0f516/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 f5d83fc7ee9b26859e9993ee2fcff801f4a9d92dea17a48a6a39594bb6b759ca --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 19:02:26,541 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 19:02:26,681 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630ec73a-6f9f-4594-9b9c-8a015bd0f516/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-11-21 19:02:26,700 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 19:02:26,701 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 19:02:26,752 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 19:02:26,753 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 19:02:26,754 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 19:02:26,755 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 19:02:26,762 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 19:02:26,762 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-21 19:02:26,764 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-21 19:02:26,765 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-21 19:02:26,766 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-21 19:02:26,767 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-21 19:02:26,768 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-21 19:02:26,768 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-21 19:02:26,769 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-21 19:02:26,769 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-21 19:02:26,770 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-21 19:02:26,771 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-21 19:02:26,772 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-21 19:02:26,773 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 19:02:26,773 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 19:02:26,774 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 19:02:26,775 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 19:02:26,776 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 19:02:26,776 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 19:02:26,777 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 19:02:26,777 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-21 19:02:26,779 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-21 19:02:26,779 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-21 19:02:26,780 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 19:02:26,780 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-21 19:02:26,780 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 19:02:26,781 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 19:02:26,781 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 19:02:26,781 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 19:02:26,782 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 19:02:26,782 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 19:02:26,783 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 19:02:26,783 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 19:02:26,783 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 19:02:26,784 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-21 19:02:26,785 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 19:02:26,785 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 19:02:26,785 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-21 19:02:26,785 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 19:02:26,786 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_630ec73a-6f9f-4594-9b9c-8a015bd0f516/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630ec73a-6f9f-4594-9b9c-8a015bd0f516/bin/utaipan-verify-QoSU8krkJ5 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f5d83fc7ee9b26859e9993ee2fcff801f4a9d92dea17a48a6a39594bb6b759ca [2023-11-21 19:02:27,164 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 19:02:27,198 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 19:02:27,203 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 19:02:27,204 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 19:02:27,205 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 19:02:27,207 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630ec73a-6f9f-4594-9b9c-8a015bd0f516/bin/utaipan-verify-QoSU8krkJ5/../../sv-benchmarks/c/pthread-wmm/mix036_power.opt_rmo.opt.i [2023-11-21 19:02:30,739 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 19:02:31,092 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 19:02:31,093 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630ec73a-6f9f-4594-9b9c-8a015bd0f516/sv-benchmarks/c/pthread-wmm/mix036_power.opt_rmo.opt.i [2023-11-21 19:02:31,114 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630ec73a-6f9f-4594-9b9c-8a015bd0f516/bin/utaipan-verify-QoSU8krkJ5/data/f07a432e2/fea09d01753046f8a6a2c15a725f7c0a/FLAGdb9f9ff96 [2023-11-21 19:02:31,131 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630ec73a-6f9f-4594-9b9c-8a015bd0f516/bin/utaipan-verify-QoSU8krkJ5/data/f07a432e2/fea09d01753046f8a6a2c15a725f7c0a [2023-11-21 19:02:31,137 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 19:02:31,139 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 19:02:31,143 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 19:02:31,144 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 19:02:31,150 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 19:02:31,150 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 07:02:31" (1/1) ... [2023-11-21 19:02:31,152 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@227124ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:02:31, skipping insertion in model container [2023-11-21 19:02:31,152 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 07:02:31" (1/1) ... [2023-11-21 19:02:31,224 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 19:02:31,724 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 19:02:31,749 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 19:02:31,882 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 19:02:31,940 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:02:31,940 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 19:02:31,949 INFO L206 MainTranslator]: Completed translation [2023-11-21 19:02:31,950 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:02:31 WrapperNode [2023-11-21 19:02:31,950 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 19:02:31,951 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 19:02:31,951 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 19:02:31,952 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 19:02:31,959 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:02:31" (1/1) ... [2023-11-21 19:02:31,980 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:02:31" (1/1) ... [2023-11-21 19:02:32,022 INFO L138 Inliner]: procedures = 177, calls = 72, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 152 [2023-11-21 19:02:32,029 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 19:02:32,030 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 19:02:32,030 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 19:02:32,031 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 19:02:32,045 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:02:31" (1/1) ... [2023-11-21 19:02:32,045 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:02:31" (1/1) ... [2023-11-21 19:02:32,052 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:02:31" (1/1) ... [2023-11-21 19:02:32,053 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:02:31" (1/1) ... [2023-11-21 19:02:32,076 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:02:31" (1/1) ... [2023-11-21 19:02:32,078 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:02:31" (1/1) ... [2023-11-21 19:02:32,082 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:02:31" (1/1) ... [2023-11-21 19:02:32,085 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:02:31" (1/1) ... [2023-11-21 19:02:32,101 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 19:02:32,103 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 19:02:32,103 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 19:02:32,103 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 19:02:32,104 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:02:31" (1/1) ... [2023-11-21 19:02:32,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 19:02:32,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630ec73a-6f9f-4594-9b9c-8a015bd0f516/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:02:32,161 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630ec73a-6f9f-4594-9b9c-8a015bd0f516/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 19:02:32,185 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_630ec73a-6f9f-4594-9b9c-8a015bd0f516/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 19:02:32,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-21 19:02:32,216 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-21 19:02:32,216 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 19:02:32,216 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 19:02:32,218 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 19:02:32,219 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-21 19:02:32,219 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-21 19:02:32,220 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-21 19:02:32,220 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-21 19:02:32,220 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-21 19:02:32,220 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-21 19:02:32,221 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-11-21 19:02:32,221 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-11-21 19:02:32,221 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-21 19:02:32,221 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-21 19:02:32,222 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 19:02:32,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 19:02:32,224 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 19:02:32,474 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 19:02:32,477 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 19:02:33,068 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 19:02:33,301 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 19:02:33,301 INFO L308 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-21 19:02:33,303 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 07:02:33 BoogieIcfgContainer [2023-11-21 19:02:33,303 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 19:02:33,306 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 19:02:33,306 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 19:02:33,310 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 19:02:33,311 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 07:02:31" (1/3) ... [2023-11-21 19:02:33,312 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@358d9f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 07:02:33, skipping insertion in model container [2023-11-21 19:02:33,312 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:02:31" (2/3) ... [2023-11-21 19:02:33,312 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@358d9f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 07:02:33, skipping insertion in model container [2023-11-21 19:02:33,312 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 07:02:33" (3/3) ... [2023-11-21 19:02:33,314 INFO L112 eAbstractionObserver]: Analyzing ICFG mix036_power.opt_rmo.opt.i [2023-11-21 19:02:33,338 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 19:02:33,339 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2023-11-21 19:02:33,339 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-21 19:02:33,409 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-21 19:02:33,447 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 78 places, 67 transitions, 150 flow [2023-11-21 19:02:36,868 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 52960 states, 52945 states have (on average 4.49774294078761) internal successors, (238133), 52959 states have internal predecessors, (238133), 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 19:02:36,911 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 19:02:36,918 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;@516bd87c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 19:02:36,918 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2023-11-21 19:02:37,006 INFO L276 IsEmpty]: Start isEmpty. Operand has 52960 states, 52945 states have (on average 4.49774294078761) internal successors, (238133), 52959 states have internal predecessors, (238133), 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 19:02:37,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-21 19:02:37,158 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:02:37,159 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-21 19:02:37,161 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-21 19:02:37,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:02:37,180 INFO L85 PathProgramCache]: Analyzing trace with hash 13765, now seen corresponding path program 1 times [2023-11-21 19:02:37,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:02:37,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5990211] [2023-11-21 19:02:37,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:02:37,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:02:37,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:02:37,645 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 19:02:37,646 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:02:37,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5990211] [2023-11-21 19:02:37,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5990211] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:02:37,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:02:37,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 19:02:37,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479102199] [2023-11-21 19:02:37,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:02:37,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:02:37,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:02:37,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:02:37,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:02:37,800 INFO L87 Difference]: Start difference. First operand has 52960 states, 52945 states have (on average 4.49774294078761) internal successors, (238133), 52959 states have internal predecessors, (238133), 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 19:02:39,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:02:39,682 INFO L93 Difference]: Finished difference Result 49431 states and 215277 transitions. [2023-11-21 19:02:39,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:02:39,686 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 19:02:39,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:02:40,660 INFO L225 Difference]: With dead ends: 49431 [2023-11-21 19:02:40,661 INFO L226 Difference]: Without dead ends: 49431 [2023-11-21 19:02:40,663 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 19:02:40,669 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 52 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-21 19:02:40,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 45 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-21 19:02:41,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49431 states. [2023-11-21 19:02:43,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49431 to 49431. [2023-11-21 19:02:43,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49431 states, 49417 states have (on average 4.356334864520306) internal successors, (215277), 49430 states have internal predecessors, (215277), 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 19:02:44,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49431 states to 49431 states and 215277 transitions. [2023-11-21 19:02:44,605 INFO L78 Accepts]: Start accepts. Automaton has 49431 states and 215277 transitions. Word has length 2 [2023-11-21 19:02:44,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:02:44,606 INFO L495 AbstractCegarLoop]: Abstraction has 49431 states and 215277 transitions. [2023-11-21 19:02:44,606 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 19:02:44,606 INFO L276 IsEmpty]: Start isEmpty. Operand 49431 states and 215277 transitions. [2023-11-21 19:02:44,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-21 19:02:44,607 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:02:44,607 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-21 19:02:44,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 19:02:44,608 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-21 19:02:44,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:02:44,609 INFO L85 PathProgramCache]: Analyzing trace with hash 13766, now seen corresponding path program 1 times [2023-11-21 19:02:44,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:02:44,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096163177] [2023-11-21 19:02:44,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:02:44,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:02:44,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:02:44,748 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 19:02:44,749 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:02:44,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096163177] [2023-11-21 19:02:44,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096163177] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:02:44,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:02:44,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 19:02:44,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780969821] [2023-11-21 19:02:44,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:02:44,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:02:44,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:02:44,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:02:44,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:02:44,753 INFO L87 Difference]: Start difference. First operand 49431 states and 215277 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 19:02:46,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:02:46,135 INFO L93 Difference]: Finished difference Result 49430 states and 215276 transitions. [2023-11-21 19:02:46,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:02:46,136 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 19:02:46,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:02:46,706 INFO L225 Difference]: With dead ends: 49430 [2023-11-21 19:02:46,707 INFO L226 Difference]: Without dead ends: 49430 [2023-11-21 19:02:46,712 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 19:02:46,714 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 51 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 46 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 [2023-11-21 19:02:46,715 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 46 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 19:02:47,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49430 states. [2023-11-21 19:02:49,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49430 to 49430. [2023-11-21 19:02:49,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49430 states, 49417 states have (on average 4.356314628569116) internal successors, (215276), 49429 states have internal predecessors, (215276), 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 19:02:49,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49430 states to 49430 states and 215276 transitions. [2023-11-21 19:02:49,540 INFO L78 Accepts]: Start accepts. Automaton has 49430 states and 215276 transitions. Word has length 2 [2023-11-21 19:02:49,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:02:49,541 INFO L495 AbstractCegarLoop]: Abstraction has 49430 states and 215276 transitions. [2023-11-21 19:02:49,541 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 19:02:49,542 INFO L276 IsEmpty]: Start isEmpty. Operand 49430 states and 215276 transitions. [2023-11-21 19:02:49,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-21 19:02:49,542 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:02:49,543 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-21 19:02:49,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-21 19:02:49,543 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-21 19:02:49,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:02:49,544 INFO L85 PathProgramCache]: Analyzing trace with hash 410503350, now seen corresponding path program 1 times [2023-11-21 19:02:49,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:02:49,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233239840] [2023-11-21 19:02:49,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:02:49,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:02:49,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:02:49,619 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 19:02:49,619 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:02:49,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233239840] [2023-11-21 19:02:49,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233239840] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:02:49,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:02:49,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 19:02:49,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026165936] [2023-11-21 19:02:49,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:02:49,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:02:49,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:02:49,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:02:49,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:02:49,623 INFO L87 Difference]: Start difference. First operand 49430 states and 215276 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 19:02:50,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:02:50,721 INFO L93 Difference]: Finished difference Result 49423 states and 215263 transitions. [2023-11-21 19:02:50,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:02:50,722 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 19:02:50,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:02:51,116 INFO L225 Difference]: With dead ends: 49423 [2023-11-21 19:02:51,116 INFO L226 Difference]: Without dead ends: 49423 [2023-11-21 19:02:51,117 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 19:02:51,118 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 48 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 50 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 [2023-11-21 19:02:51,119 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 50 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 19:02:51,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49423 states. [2023-11-21 19:02:52,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49423 to 49423. [2023-11-21 19:02:52,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49423 states, 49411 states have (on average 4.356580518508024) internal successors, (215263), 49422 states have internal predecessors, (215263), 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 19:02:54,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49423 states to 49423 states and 215263 transitions. [2023-11-21 19:02:54,002 INFO L78 Accepts]: Start accepts. Automaton has 49423 states and 215263 transitions. Word has length 5 [2023-11-21 19:02:54,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:02:54,002 INFO L495 AbstractCegarLoop]: Abstraction has 49423 states and 215263 transitions. [2023-11-21 19:02:54,003 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 19:02:54,003 INFO L276 IsEmpty]: Start isEmpty. Operand 49423 states and 215263 transitions. [2023-11-21 19:02:54,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-21 19:02:54,004 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:02:54,004 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-21 19:02:54,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-21 19:02:54,005 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-21 19:02:54,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:02:54,006 INFO L85 PathProgramCache]: Analyzing trace with hash 410503351, now seen corresponding path program 1 times [2023-11-21 19:02:54,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:02:54,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023245216] [2023-11-21 19:02:54,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:02:54,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:02:54,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:02:54,198 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 19:02:54,198 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:02:54,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023245216] [2023-11-21 19:02:54,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023245216] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:02:54,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:02:54,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 19:02:54,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833812173] [2023-11-21 19:02:54,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:02:54,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:02:54,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:02:54,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:02:54,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:02:54,202 INFO L87 Difference]: Start difference. First operand 49423 states and 215263 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 19:02:54,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:02:54,854 INFO L93 Difference]: Finished difference Result 49416 states and 215250 transitions. [2023-11-21 19:02:54,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:02:54,855 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 19:02:54,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:02:55,186 INFO L225 Difference]: With dead ends: 49416 [2023-11-21 19:02:55,186 INFO L226 Difference]: Without dead ends: 49416 [2023-11-21 19:02:55,187 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 19:02:55,189 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 47 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 51 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 [2023-11-21 19:02:55,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 51 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 19:02:56,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49416 states. [2023-11-21 19:02:57,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49416 to 49416. [2023-11-21 19:02:57,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49416 states, 49405 states have (on average 4.356846473029045) internal successors, (215250), 49415 states have internal predecessors, (215250), 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 19:02:58,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49416 states to 49416 states and 215250 transitions. [2023-11-21 19:02:58,213 INFO L78 Accepts]: Start accepts. Automaton has 49416 states and 215250 transitions. Word has length 5 [2023-11-21 19:02:58,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:02:58,214 INFO L495 AbstractCegarLoop]: Abstraction has 49416 states and 215250 transitions. [2023-11-21 19:02:58,214 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 19:02:58,215 INFO L276 IsEmpty]: Start isEmpty. Operand 49416 states and 215250 transitions. [2023-11-21 19:02:58,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-21 19:02:58,215 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:02:58,216 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:02:58,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-21 19:02:58,216 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-21 19:02:58,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:02:58,217 INFO L85 PathProgramCache]: Analyzing trace with hash 1533833938, now seen corresponding path program 1 times [2023-11-21 19:02:58,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:02:58,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678886845] [2023-11-21 19:02:58,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:02:58,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:02:58,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:02:58,283 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 19:02:58,284 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:02:58,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678886845] [2023-11-21 19:02:58,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678886845] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:02:58,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:02:58,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 19:02:58,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129998129] [2023-11-21 19:02:58,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:02:58,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:02:58,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:02:58,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:02:58,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:02:58,288 INFO L87 Difference]: Start difference. First operand 49416 states and 215250 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 19:02:58,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:02:58,728 INFO L93 Difference]: Finished difference Result 49367 states and 215117 transitions. [2023-11-21 19:02:58,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:02:58,729 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 19:02:58,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:02:59,737 INFO L225 Difference]: With dead ends: 49367 [2023-11-21 19:02:59,750 INFO L226 Difference]: Without dead ends: 49367 [2023-11-21 19:02:59,751 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 19:02:59,752 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 44 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 19:02:59,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 54 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 19:02:59,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49367 states. [2023-11-21 19:03:01,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49367 to 49367. [2023-11-21 19:03:01,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49367 states, 49357 states have (on average 4.358388881009786) internal successors, (215117), 49366 states have internal predecessors, (215117), 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 19:03:01,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49367 states to 49367 states and 215117 transitions. [2023-11-21 19:03:01,758 INFO L78 Accepts]: Start accepts. Automaton has 49367 states and 215117 transitions. Word has length 8 [2023-11-21 19:03:01,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:03:01,758 INFO L495 AbstractCegarLoop]: Abstraction has 49367 states and 215117 transitions. [2023-11-21 19:03:01,759 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 19:03:01,759 INFO L276 IsEmpty]: Start isEmpty. Operand 49367 states and 215117 transitions. [2023-11-21 19:03:01,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-21 19:03:01,760 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:03:01,760 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:03:01,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-21 19:03:01,760 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-21 19:03:01,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:03:01,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1533833939, now seen corresponding path program 1 times [2023-11-21 19:03:01,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:03:01,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290955930] [2023-11-21 19:03:01,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:03:01,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:03:01,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:03:01,870 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 19:03:01,871 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:03:01,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290955930] [2023-11-21 19:03:01,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290955930] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:03:01,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:03:01,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 19:03:01,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259195114] [2023-11-21 19:03:01,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:03:01,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:03:01,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:03:01,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:03:01,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:03:01,874 INFO L87 Difference]: Start difference. First operand 49367 states and 215117 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 19:03:02,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:03:02,462 INFO L93 Difference]: Finished difference Result 49318 states and 214984 transitions. [2023-11-21 19:03:02,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:03:02,462 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 19:03:02,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:03:03,520 INFO L225 Difference]: With dead ends: 49318 [2023-11-21 19:03:03,520 INFO L226 Difference]: Without dead ends: 49318 [2023-11-21 19:03:03,521 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 19:03:03,528 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 43 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 19:03:03,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 55 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 19:03:03,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49318 states. [2023-11-21 19:03:05,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49318 to 49318. [2023-11-21 19:03:05,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49318 states, 49309 states have (on average 4.359934291914255) internal successors, (214984), 49317 states have internal predecessors, (214984), 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 19:03:05,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49318 states to 49318 states and 214984 transitions. [2023-11-21 19:03:05,691 INFO L78 Accepts]: Start accepts. Automaton has 49318 states and 214984 transitions. Word has length 8 [2023-11-21 19:03:05,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:03:05,692 INFO L495 AbstractCegarLoop]: Abstraction has 49318 states and 214984 transitions. [2023-11-21 19:03:05,692 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 19:03:05,692 INFO L276 IsEmpty]: Start isEmpty. Operand 49318 states and 214984 transitions. [2023-11-21 19:03:05,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-21 19:03:05,694 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:03:05,694 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:03:05,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-21 19:03:05,695 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting P2Err0ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-21 19:03:05,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:03:05,695 INFO L85 PathProgramCache]: Analyzing trace with hash 290218051, now seen corresponding path program 1 times [2023-11-21 19:03:05,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:03:05,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444848943] [2023-11-21 19:03:05,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:03:05,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:03:05,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:03:05,828 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 19:03:05,828 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:03:05,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444848943] [2023-11-21 19:03:05,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444848943] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:03:05,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:03:05,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 19:03:05,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942486449] [2023-11-21 19:03:05,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:03:05,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:03:05,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:03:05,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:03:05,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:03:05,831 INFO L87 Difference]: Start difference. First operand 49318 states and 214984 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 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 19:03:06,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:03:06,192 INFO L93 Difference]: Finished difference Result 42899 states and 186095 transitions. [2023-11-21 19:03:06,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:03:06,193 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 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 19:03:06,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:03:06,489 INFO L225 Difference]: With dead ends: 42899 [2023-11-21 19:03:06,489 INFO L226 Difference]: Without dead ends: 42017 [2023-11-21 19:03:06,489 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 19:03:06,490 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 35 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 19:03:06,491 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 56 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 19:03:06,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42017 states. [2023-11-21 19:03:08,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42017 to 42017. [2023-11-21 19:03:08,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42017 states, 42013 states have (on average 4.343322305000833) internal successors, (182476), 42016 states have internal predecessors, (182476), 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 19:03:08,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42017 states to 42017 states and 182476 transitions. [2023-11-21 19:03:08,573 INFO L78 Accepts]: Start accepts. Automaton has 42017 states and 182476 transitions. Word has length 11 [2023-11-21 19:03:08,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:03:08,573 INFO L495 AbstractCegarLoop]: Abstraction has 42017 states and 182476 transitions. [2023-11-21 19:03:08,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 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 19:03:08,573 INFO L276 IsEmpty]: Start isEmpty. Operand 42017 states and 182476 transitions. [2023-11-21 19:03:08,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-21 19:03:08,575 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:03:08,575 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:03:08,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-21 19:03:08,576 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-21 19:03:08,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:03:08,577 INFO L85 PathProgramCache]: Analyzing trace with hash 290217535, now seen corresponding path program 1 times [2023-11-21 19:03:08,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:03:08,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512669302] [2023-11-21 19:03:08,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:03:08,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:03:08,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:03:08,656 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 19:03:08,657 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:03:08,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512669302] [2023-11-21 19:03:08,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512669302] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:03:08,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:03:08,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 19:03:08,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905754735] [2023-11-21 19:03:08,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:03:08,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:03:08,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:03:08,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:03:08,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:03:08,660 INFO L87 Difference]: Start difference. First operand 42017 states and 182476 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 19:03:09,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:03:09,818 INFO L93 Difference]: Finished difference Result 41674 states and 181251 transitions. [2023-11-21 19:03:09,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:03:09,819 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 19:03:09,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:03:10,156 INFO L225 Difference]: With dead ends: 41674 [2023-11-21 19:03:10,157 INFO L226 Difference]: Without dead ends: 41674 [2023-11-21 19:03:10,157 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 19:03:10,158 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 39 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-21 19:03:10,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 57 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-21 19:03:10,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41674 states. [2023-11-21 19:03:12,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41674 to 41674. [2023-11-21 19:03:12,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41674 states, 41671 states have (on average 4.349571644548967) internal successors, (181251), 41673 states have internal predecessors, (181251), 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 19:03:12,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41674 states to 41674 states and 181251 transitions. [2023-11-21 19:03:12,252 INFO L78 Accepts]: Start accepts. Automaton has 41674 states and 181251 transitions. Word has length 11 [2023-11-21 19:03:12,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:03:12,253 INFO L495 AbstractCegarLoop]: Abstraction has 41674 states and 181251 transitions. [2023-11-21 19:03:12,253 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) [2023-11-21 19:03:12,253 INFO L276 IsEmpty]: Start isEmpty. Operand 41674 states and 181251 transitions. [2023-11-21 19:03:12,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-21 19:03:12,254 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:03:12,254 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:03:12,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-21 19:03:12,255 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-21 19:03:12,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:03:12,255 INFO L85 PathProgramCache]: Analyzing trace with hash 290217536, now seen corresponding path program 1 times [2023-11-21 19:03:12,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:03:12,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202130702] [2023-11-21 19:03:12,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:03:12,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:03:12,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:03:12,353 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 19:03:12,353 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:03:12,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202130702] [2023-11-21 19:03:12,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202130702] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:03:12,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:03:12,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 19:03:12,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634107019] [2023-11-21 19:03:12,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:03:12,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:03:12,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:03:12,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:03:12,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:03:12,356 INFO L87 Difference]: Start difference. First operand 41674 states and 181251 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 19:03:12,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:03:12,662 INFO L93 Difference]: Finished difference Result 41331 states and 180026 transitions. [2023-11-21 19:03:12,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:03:12,662 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 19:03:12,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:03:12,880 INFO L225 Difference]: With dead ends: 41331 [2023-11-21 19:03:12,880 INFO L226 Difference]: Without dead ends: 41331 [2023-11-21 19:03:12,880 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 19:03:12,883 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 38 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 19:03:12,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 58 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 19:03:12,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41331 states. [2023-11-21 19:03:14,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41331 to 41331. [2023-11-21 19:03:14,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41331 states, 41329 states have (on average 4.35592441143023) internal successors, (180026), 41330 states have internal predecessors, (180026), 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 19:03:14,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41331 states to 41331 states and 180026 transitions. [2023-11-21 19:03:14,894 INFO L78 Accepts]: Start accepts. Automaton has 41331 states and 180026 transitions. Word has length 11 [2023-11-21 19:03:14,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:03:14,895 INFO L495 AbstractCegarLoop]: Abstraction has 41331 states and 180026 transitions. [2023-11-21 19:03:14,895 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) [2023-11-21 19:03:14,895 INFO L276 IsEmpty]: Start isEmpty. Operand 41331 states and 180026 transitions. [2023-11-21 19:03:14,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-21 19:03:14,907 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:03:14,907 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] [2023-11-21 19:03:14,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-21 19:03:14,908 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-21 19:03:14,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:03:14,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1174402041, now seen corresponding path program 1 times [2023-11-21 19:03:14,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:03:14,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767947885] [2023-11-21 19:03:14,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:03:14,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:03:14,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat