./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-lit/sssc12-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9bd2c7ff 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_3de15e4e-0d24-4cc5-9451-f58d8a41c055/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3de15e4e-0d24-4cc5-9451-f58d8a41c055/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3de15e4e-0d24-4cc5-9451-f58d8a41c055/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3de15e4e-0d24-4cc5-9451-f58d8a41c055/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-lit/sssc12-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3de15e4e-0d24-4cc5-9451-f58d8a41c055/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3de15e4e-0d24-4cc5-9451-f58d8a41c055/bin/utaipan-verify-t7M7D8N6sZ --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 3f447624cefe078f3d1dfeed3af04dfcf2078828fba23b82e0579b17d6eb7f02 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:11:29,007 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:11:29,098 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3de15e4e-0d24-4cc5-9451-f58d8a41c055/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-11-19 04:11:29,106 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:11:29,109 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:11:29,147 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:11:29,148 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:11:29,149 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:11:29,150 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:11:29,155 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:11:29,156 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:11:29,156 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:11:29,157 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:11:29,158 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 04:11:29,159 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:11:29,159 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:11:29,160 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 04:11:29,160 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 04:11:29,161 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:11:29,161 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 04:11:29,162 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 04:11:29,163 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 04:11:29,163 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 04:11:29,164 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 04:11:29,165 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:11:29,165 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 04:11:29,166 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:11:29,166 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 04:11:29,166 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:11:29,166 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 04:11:29,167 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 04:11:29,167 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 04:11:29,167 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:11:29,168 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 04:11:29,168 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 04:11:29,168 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 04:11:29,168 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:11:29,168 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:11:29,168 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:11:29,169 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:11:29,169 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:11:29,169 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:11:29,170 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 04:11:29,170 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 04:11:29,170 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:11:29,171 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:11:29,171 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_3de15e4e-0d24-4cc5-9451-f58d8a41c055/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3de15e4e-0d24-4cc5-9451-f58d8a41c055/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3f447624cefe078f3d1dfeed3af04dfcf2078828fba23b82e0579b17d6eb7f02 [2023-11-19 04:11:29,523 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:11:29,558 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:11:29,560 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:11:29,562 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:11:29,563 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:11:29,564 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3de15e4e-0d24-4cc5-9451-f58d8a41c055/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/pthread-lit/sssc12-2.i [2023-11-19 04:11:32,716 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:11:33,072 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:11:33,073 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3de15e4e-0d24-4cc5-9451-f58d8a41c055/sv-benchmarks/c/pthread-lit/sssc12-2.i [2023-11-19 04:11:33,092 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3de15e4e-0d24-4cc5-9451-f58d8a41c055/bin/utaipan-verify-t7M7D8N6sZ/data/5679435e7/68f72af834734a53aeb2932899b98434/FLAG567dbb997 [2023-11-19 04:11:33,107 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3de15e4e-0d24-4cc5-9451-f58d8a41c055/bin/utaipan-verify-t7M7D8N6sZ/data/5679435e7/68f72af834734a53aeb2932899b98434 [2023-11-19 04:11:33,110 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:11:33,111 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:11:33,113 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:11:33,113 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:11:33,118 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:11:33,119 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:11:33" (1/1) ... [2023-11-19 04:11:33,121 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27d8b2e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:11:33, skipping insertion in model container [2023-11-19 04:11:33,121 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:11:33" (1/1) ... [2023-11-19 04:11:33,180 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:11:33,765 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:11:33,778 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:11:33,842 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:11:33,905 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:11:33,905 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:11:33,913 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:11:33,914 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:11:33 WrapperNode [2023-11-19 04:11:33,914 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:11:33,915 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:11:33,916 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:11:33,916 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:11:33,924 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:11:33" (1/1) ... [2023-11-19 04:11:33,943 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:11:33" (1/1) ... [2023-11-19 04:11:33,999 INFO L138 Inliner]: procedures = 275, calls = 24, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 85 [2023-11-19 04:11:34,000 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:11:34,001 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:11:34,001 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:11:34,001 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:11:34,009 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:11:33" (1/1) ... [2023-11-19 04:11:34,009 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:11:33" (1/1) ... [2023-11-19 04:11:34,013 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:11:33" (1/1) ... [2023-11-19 04:11:34,013 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:11:33" (1/1) ... [2023-11-19 04:11:34,028 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:11:33" (1/1) ... [2023-11-19 04:11:34,051 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:11:33" (1/1) ... [2023-11-19 04:11:34,054 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:11:33" (1/1) ... [2023-11-19 04:11:34,055 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:11:33" (1/1) ... [2023-11-19 04:11:34,059 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:11:34,059 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:11:34,060 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:11:34,060 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:11:34,061 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:11:33" (1/1) ... [2023-11-19 04:11:34,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:11:34,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3de15e4e-0d24-4cc5-9451-f58d8a41c055/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:11:34,107 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3de15e4e-0d24-4cc5-9451-f58d8a41c055/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 04:11:34,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3de15e4e-0d24-4cc5-9451-f58d8a41c055/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 04:11:34,142 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 04:11:34,142 INFO L130 BoogieDeclarations]: Found specification of procedure thr [2023-11-19 04:11:34,143 INFO L138 BoogieDeclarations]: Found implementation of procedure thr [2023-11-19 04:11:34,143 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 04:11:34,143 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 04:11:34,143 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 04:11:34,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 04:11:34,143 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 04:11:34,144 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 04:11:34,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 04:11:34,144 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:11:34,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:11:34,146 WARN L210 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 04:11:34,286 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:11:34,289 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:11:34,488 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:11:34,555 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:11:34,559 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-19 04:11:34,564 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:11:34 BoogieIcfgContainer [2023-11-19 04:11:34,565 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:11:34,570 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 04:11:34,570 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 04:11:34,574 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 04:11:34,575 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:11:33" (1/3) ... [2023-11-19 04:11:34,576 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25321ba5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:11:34, skipping insertion in model container [2023-11-19 04:11:34,577 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:11:33" (2/3) ... [2023-11-19 04:11:34,579 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25321ba5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:11:34, skipping insertion in model container [2023-11-19 04:11:34,583 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:11:34" (3/3) ... [2023-11-19 04:11:34,585 INFO L112 eAbstractionObserver]: Analyzing ICFG sssc12-2.i [2023-11-19 04:11:34,607 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 04:11:34,608 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-19 04:11:34,608 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 04:11:34,719 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 04:11:34,764 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-19 04:11:34,791 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 87 places, 91 transitions, 186 flow [2023-11-19 04:11:34,801 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 87 places, 91 transitions, 186 flow [2023-11-19 04:11:34,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 87 places, 91 transitions, 186 flow [2023-11-19 04:11:34,877 INFO L124 PetriNetUnfolderBase]: 8/108 cut-off events. [2023-11-19 04:11:34,879 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 04:11:34,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112 conditions, 108 events. 8/108 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 150 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 58. Up to 4 conditions per place. [2023-11-19 04:11:34,887 INFO L119 LiptonReduction]: Number of co-enabled transitions 1560 [2023-11-19 04:11:38,701 INFO L134 LiptonReduction]: Checked pairs total: 1578 [2023-11-19 04:11:38,702 INFO L136 LiptonReduction]: Total number of compositions: 101 [2023-11-19 04:11:38,711 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 17 places, 15 transitions, 34 flow [2023-11-19 04:11:38,726 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 53 states, 31 states have (on average 3.032258064516129) internal successors, (94), 52 states have internal predecessors, (94), 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) [2023-11-19 04:11:38,745 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 04:11:38,753 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;@c2e900c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 04:11:38,753 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2023-11-19 04:11:38,755 INFO L276 IsEmpty]: Start isEmpty. Operand has 53 states, 31 states have (on average 3.032258064516129) internal successors, (94), 52 states have internal predecessors, (94), 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) [2023-11-19 04:11:38,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-19 04:11:38,760 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:11:38,761 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-19 04:11:38,761 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 7 more)] === [2023-11-19 04:11:38,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:11:38,767 INFO L85 PathProgramCache]: Analyzing trace with hash 13768, now seen corresponding path program 1 times [2023-11-19 04:11:38,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:11:38,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003657828] [2023-11-19 04:11:38,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:11:38,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:11:38,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:11:39,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:11:39,023 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:11:39,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003657828] [2023-11-19 04:11:39,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003657828] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:11:39,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:11:39,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 04:11:39,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616254016] [2023-11-19 04:11:39,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:11:39,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 04:11:39,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:11:39,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 04:11:39,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 04:11:39,098 INFO L87 Difference]: Start difference. First operand has 53 states, 31 states have (on average 3.032258064516129) internal successors, (94), 52 states have internal predecessors, (94), 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 2 states, 1 states have (on average 2.0) 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) [2023-11-19 04:11:39,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:11:39,157 INFO L93 Difference]: Finished difference Result 41 states and 71 transitions. [2023-11-19 04:11:39,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 04:11:39,160 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 2.0) 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 [2023-11-19 04:11:39,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:11:39,170 INFO L225 Difference]: With dead ends: 41 [2023-11-19 04:11:39,171 INFO L226 Difference]: Without dead ends: 41 [2023-11-19 04:11:39,173 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 04:11:39,180 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 04:11:39,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 04:11:39,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2023-11-19 04:11:39,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2023-11-19 04:11:39,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 27 states have (on average 2.6296296296296298) internal successors, (71), 40 states have internal predecessors, (71), 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) [2023-11-19 04:11:39,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 71 transitions. [2023-11-19 04:11:39,221 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 71 transitions. Word has length 2 [2023-11-19 04:11:39,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:11:39,222 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 71 transitions. [2023-11-19 04:11:39,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 2.0) 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) [2023-11-19 04:11:39,222 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 71 transitions. [2023-11-19 04:11:39,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-19 04:11:39,223 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:11:39,223 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-19 04:11:39,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 04:11:39,224 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 7 more)] === [2023-11-19 04:11:39,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:11:39,225 INFO L85 PathProgramCache]: Analyzing trace with hash 13755, now seen corresponding path program 1 times [2023-11-19 04:11:39,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:11:39,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318272867] [2023-11-19 04:11:39,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:11:39,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:11:39,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:11:39,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:11:39,388 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:11:39,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318272867] [2023-11-19 04:11:39,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318272867] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:11:39,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:11:39,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 04:11:39,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490753066] [2023-11-19 04:11:39,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:11:39,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:11:39,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:11:39,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:11:39,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:11:39,392 INFO L87 Difference]: Start difference. First operand 41 states and 71 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) [2023-11-19 04:11:39,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:11:39,417 INFO L93 Difference]: Finished difference Result 34 states and 58 transitions. [2023-11-19 04:11:39,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:11:39,418 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 [2023-11-19 04:11:39,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:11:39,419 INFO L225 Difference]: With dead ends: 34 [2023-11-19 04:11:39,420 INFO L226 Difference]: Without dead ends: 34 [2023-11-19 04:11:39,420 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 [2023-11-19 04:11:39,422 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 11 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 04:11:39,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 1 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 04:11:39,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2023-11-19 04:11:39,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2023-11-19 04:11:39,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 25 states have (on average 2.32) internal successors, (58), 33 states have internal predecessors, (58), 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) [2023-11-19 04:11:39,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 58 transitions. [2023-11-19 04:11:39,437 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 58 transitions. Word has length 2 [2023-11-19 04:11:39,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:11:39,437 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 58 transitions. [2023-11-19 04:11:39,437 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) [2023-11-19 04:11:39,438 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 58 transitions. [2023-11-19 04:11:39,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-19 04:11:39,438 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:11:39,438 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-19 04:11:39,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 04:11:39,438 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 7 more)] === [2023-11-19 04:11:39,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:11:39,439 INFO L85 PathProgramCache]: Analyzing trace with hash 13757, now seen corresponding path program 1 times [2023-11-19 04:11:39,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:11:39,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434013905] [2023-11-19 04:11:39,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:11:39,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:11:39,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:11:39,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:11:39,609 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:11:39,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434013905] [2023-11-19 04:11:39,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434013905] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:11:39,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:11:39,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 04:11:39,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682910107] [2023-11-19 04:11:39,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:11:39,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:11:39,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:11:39,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:11:39,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:11:39,613 INFO L87 Difference]: Start difference. First operand 34 states and 58 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) [2023-11-19 04:11:39,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:11:39,634 INFO L93 Difference]: Finished difference Result 27 states and 45 transitions. [2023-11-19 04:11:39,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:11:39,635 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 [2023-11-19 04:11:39,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:11:39,637 INFO L225 Difference]: With dead ends: 27 [2023-11-19 04:11:39,637 INFO L226 Difference]: Without dead ends: 27 [2023-11-19 04:11:39,638 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:11:39,642 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 10 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 04:11:39,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 1 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 04:11:39,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-11-19 04:11:39,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2023-11-19 04:11:39,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 23 states have (on average 1.9565217391304348) internal successors, (45), 26 states have internal predecessors, (45), 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) [2023-11-19 04:11:39,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 45 transitions. [2023-11-19 04:11:39,657 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 45 transitions. Word has length 2 [2023-11-19 04:11:39,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:11:39,657 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 45 transitions. [2023-11-19 04:11:39,657 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) [2023-11-19 04:11:39,657 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 45 transitions. [2023-11-19 04:11:39,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-19 04:11:39,658 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:11:39,658 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 04:11:39,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 04:11:39,659 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thrErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 7 more)] === [2023-11-19 04:11:39,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:11:39,661 INFO L85 PathProgramCache]: Analyzing trace with hash 410106055, now seen corresponding path program 1 times [2023-11-19 04:11:39,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:11:39,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734211420] [2023-11-19 04:11:39,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:11:39,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:11:39,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:11:39,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:11:39,939 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:11:39,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734211420] [2023-11-19 04:11:39,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734211420] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:11:39,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:11:39,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:11:39,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561717210] [2023-11-19 04:11:39,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:11:39,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 04:11:39,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:11:39,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 04:11:39,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 04:11:39,942 INFO L87 Difference]: Start difference. First operand 27 states and 45 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) 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) [2023-11-19 04:11:39,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:11:39,982 INFO L93 Difference]: Finished difference Result 43 states and 73 transitions. [2023-11-19 04:11:39,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 04:11:39,983 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) 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 [2023-11-19 04:11:39,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:11:39,984 INFO L225 Difference]: With dead ends: 43 [2023-11-19 04:11:39,984 INFO L226 Difference]: Without dead ends: 43 [2023-11-19 04:11:39,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 04:11:39,986 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 8 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 04:11:39,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 4 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 04:11:39,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2023-11-19 04:11:39,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 31. [2023-11-19 04:11:39,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 27 states have (on average 2.3703703703703702) internal successors, (64), 30 states have internal predecessors, (64), 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) [2023-11-19 04:11:39,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 64 transitions. [2023-11-19 04:11:39,993 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 64 transitions. Word has length 5 [2023-11-19 04:11:39,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:11:39,994 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 64 transitions. [2023-11-19 04:11:39,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) 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) [2023-11-19 04:11:39,994 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 64 transitions. [2023-11-19 04:11:39,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-19 04:11:39,995 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:11:39,995 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 04:11:39,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 04:11:39,996 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thrErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 7 more)] === [2023-11-19 04:11:39,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:11:39,996 INFO L85 PathProgramCache]: Analyzing trace with hash 410106061, now seen corresponding path program 1 times [2023-11-19 04:11:39,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:11:39,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116473064] [2023-11-19 04:11:39,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:11:39,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:11:40,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:11:40,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:11:40,088 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:11:40,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116473064] [2023-11-19 04:11:40,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116473064] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:11:40,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:11:40,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 04:11:40,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758049417] [2023-11-19 04:11:40,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:11:40,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:11:40,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:11:40,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:11:40,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:11:40,095 INFO L87 Difference]: Start difference. First operand 31 states and 64 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:11:40,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:11:40,112 INFO L93 Difference]: Finished difference Result 27 states and 53 transitions. [2023-11-19 04:11:40,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:11:40,112 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-19 04:11:40,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:11:40,115 INFO L225 Difference]: With dead ends: 27 [2023-11-19 04:11:40,116 INFO L226 Difference]: Without dead ends: 27 [2023-11-19 04:11:40,116 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 [2023-11-19 04:11:40,118 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 6 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 04:11:40,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 1 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 04:11:40,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-11-19 04:11:40,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2023-11-19 04:11:40,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 24 states have (on average 2.2083333333333335) internal successors, (53), 26 states have internal predecessors, (53), 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) [2023-11-19 04:11:40,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 53 transitions. [2023-11-19 04:11:40,133 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 53 transitions. Word has length 5 [2023-11-19 04:11:40,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:11:40,133 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 53 transitions. [2023-11-19 04:11:40,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:11:40,133 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 53 transitions. [2023-11-19 04:11:40,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-19 04:11:40,134 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:11:40,134 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 04:11:40,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 04:11:40,135 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thrErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 7 more)] === [2023-11-19 04:11:40,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:11:40,137 INFO L85 PathProgramCache]: Analyzing trace with hash 410106062, now seen corresponding path program 1 times [2023-11-19 04:11:40,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:11:40,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231746728] [2023-11-19 04:11:40,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:11:40,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:11:40,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 04:11:40,179 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 04:11:40,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 04:11:40,241 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-19 04:11:40,247 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 04:11:40,249 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location thrErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 10 remaining) [2023-11-19 04:11:40,250 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 10 remaining) [2023-11-19 04:11:40,251 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 10 remaining) [2023-11-19 04:11:40,251 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (6 of 10 remaining) [2023-11-19 04:11:40,252 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 10 remaining) [2023-11-19 04:11:40,252 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONMEMORY_LEAK (4 of 10 remaining) [2023-11-19 04:11:40,252 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 10 remaining) [2023-11-19 04:11:40,252 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 10 remaining) [2023-11-19 04:11:40,252 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 10 remaining) [2023-11-19 04:11:40,253 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 10 remaining) [2023-11-19 04:11:40,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 04:11:40,256 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-11-19 04:11:40,263 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-19 04:11:40,263 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 04:11:40,287 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre5 could not be translated [2023-11-19 04:11:40,296 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 04:11:40 BasicIcfg [2023-11-19 04:11:40,296 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 04:11:40,297 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 04:11:40,297 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 04:11:40,298 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 04:11:40,298 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:11:34" (3/4) ... [2023-11-19 04:11:40,300 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-19 04:11:40,301 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 04:11:40,302 INFO L158 Benchmark]: Toolchain (without parser) took 7190.83ms. Allocated memory was 144.7MB in the beginning and 176.2MB in the end (delta: 31.5MB). Free memory was 97.2MB in the beginning and 67.0MB in the end (delta: 30.1MB). Peak memory consumption was 62.4MB. Max. memory is 16.1GB. [2023-11-19 04:11:40,302 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 144.7MB. Free memory is still 116.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:11:40,303 INFO L158 Benchmark]: CACSL2BoogieTranslator took 801.82ms. Allocated memory is still 144.7MB. Free memory was 97.2MB in the beginning and 68.7MB in the end (delta: 28.4MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2023-11-19 04:11:40,303 INFO L158 Benchmark]: Boogie Procedure Inliner took 84.61ms. Allocated memory is still 144.7MB. Free memory was 68.7MB in the beginning and 113.4MB in the end (delta: -44.7MB). Peak memory consumption was 7.8MB. Max. memory is 16.1GB. [2023-11-19 04:11:40,304 INFO L158 Benchmark]: Boogie Preprocessor took 58.12ms. Allocated memory was 144.7MB in the beginning and 176.2MB in the end (delta: 31.5MB). Free memory was 113.4MB in the beginning and 147.8MB in the end (delta: -34.5MB). Peak memory consumption was 5.3MB. Max. memory is 16.1GB. [2023-11-19 04:11:40,305 INFO L158 Benchmark]: RCFGBuilder took 505.41ms. Allocated memory is still 176.2MB. Free memory was 147.8MB in the beginning and 131.1MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-19 04:11:40,305 INFO L158 Benchmark]: TraceAbstraction took 5726.56ms. Allocated memory is still 176.2MB. Free memory was 131.1MB in the beginning and 67.0MB in the end (delta: 64.0MB). Peak memory consumption was 61.9MB. Max. memory is 16.1GB. [2023-11-19 04:11:40,305 INFO L158 Benchmark]: Witness Printer took 4.45ms. Allocated memory is still 176.2MB. Free memory is still 67.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:11:40,308 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 144.7MB. Free memory is still 116.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 801.82ms. Allocated memory is still 144.7MB. Free memory was 97.2MB in the beginning and 68.7MB in the end (delta: 28.4MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 84.61ms. Allocated memory is still 144.7MB. Free memory was 68.7MB in the beginning and 113.4MB in the end (delta: -44.7MB). Peak memory consumption was 7.8MB. Max. memory is 16.1GB. * Boogie Preprocessor took 58.12ms. Allocated memory was 144.7MB in the beginning and 176.2MB in the end (delta: 31.5MB). Free memory was 113.4MB in the beginning and 147.8MB in the end (delta: -34.5MB). Peak memory consumption was 5.3MB. Max. memory is 16.1GB. * RCFGBuilder took 505.41ms. Allocated memory is still 176.2MB. Free memory was 147.8MB in the beginning and 131.1MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 5726.56ms. Allocated memory is still 176.2MB. Free memory was 131.1MB in the beginning and 67.0MB in the end (delta: 64.0MB). Peak memory consumption was 61.9MB. Max. memory is 16.1GB. * Witness Printer took 4.45ms. Allocated memory is still 176.2MB. Free memory is still 67.0MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre5 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.9s, 87 PlacesBefore, 17 PlacesAfterwards, 91 TransitionsBefore, 15 TransitionsAfterwards, 1560 CoEnabledTransitionPairs, 7 FixpointIterations, 27 TrivialSequentialCompositions, 52 ConcurrentSequentialCompositions, 5 TrivialYvCompositions, 11 ConcurrentYvCompositions, 6 ChoiceCompositions, 101 TotalNumberOfCompositions, 1578 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1481, independent: 1463, independent conditional: 0, independent unconditional: 1463, dependent: 18, dependent conditional: 0, dependent unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1022, independent: 1016, independent conditional: 0, independent unconditional: 1016, dependent: 6, dependent conditional: 0, dependent unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1022, independent: 1012, independent conditional: 0, independent unconditional: 1012, dependent: 10, dependent conditional: 0, dependent unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 10, independent: 4, independent conditional: 0, independent unconditional: 4, dependent: 6, dependent conditional: 0, dependent unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 55, independent: 20, independent conditional: 0, independent unconditional: 20, dependent: 35, dependent conditional: 0, dependent unconditional: 35, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1481, independent: 447, independent conditional: 0, independent unconditional: 447, dependent: 12, dependent conditional: 0, dependent unconditional: 12, unknown: 1022, unknown conditional: 0, unknown unconditional: 1022] , Statistics on independence cache: Total cache size (in pairs): 10, Positive cache size: 9, Positive conditional cache size: 0, Positive unconditional cache size: 9, Negative cache size: 1, Negative conditional cache size: 0, Negative unconditional cache size: 1, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: overapproximation of memtrack at line 991. Possible FailurePath: [L1005] 0 int *data; [L1006] 0 volatile int len; [L1007] 0 volatile int next; [L1008] 0 volatile int lock; [L1039] 0 pthread_t t; [L1040] 0 next = 0 [L1041] 0 lock = 0 [L1042] 0 len = __VERIFIER_nondet_int() [L1043] CALL 0 assume_abort_if_not(len > 0) [L994] COND FALSE 0 !(!cond) [L1043] RET 0 assume_abort_if_not(len > 0) [L1044] 0 data = malloc(sizeof(int) * len) [L1045] COND TRUE 0 1 [L1046] FCALL, FORK 0 pthread_create(&t, 0, thr, 0) VAL [data={-2:0}, len=1073741824, lock=0, next=0, t={3:0}] [L1022] 1 int c, end; [L1023] 1 c = 0 [L1024] 1 end = 0 [L1025] CALL 1 acquire() [L1011] CALL 1 assume_abort_if_not(lock == 0) [L994] COND FALSE 1 !(!cond) [L1011] RET 1 assume_abort_if_not(lock == 0) [L1012] 1 lock = 1 [L1025] RET 1 acquire() [L1026] COND TRUE 1 next + 10 <= len [L1027] 1 c = next [L1028] EXPR 1 end = next + 10 [L1028] 1 next = end = next + 10 [L1030] CALL 1 release() [L1017] CALL 1 assume_abort_if_not(lock == 1) [L994] COND FALSE 1 !(!cond) [L1017] RET 1 assume_abort_if_not(lock == 1) [L1018] 1 lock = 0 [L1030] RET 1 release() [L1031] COND TRUE 1 c < end [L1032] CALL 1 __VERIFIER_assert(0 <= c && c < len) [L997] COND FALSE 1 !(!(cond)) [L1032] RET 1 __VERIFIER_assert(0 <= c && c < len) [L1033] 1 data[c] = 0 - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1038]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1046]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 991]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 120 locations, 10 error locations. Started 1 CEGAR loops. OverallTime: 5.5s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 35 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 35 mSDsluCounter, 8 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 71 IncrementalHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 6 mSDtfsCounter, 71 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=53occurred in iteration=0, InterpolantAutomatonStates: 15, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 12 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 63 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-19 04:11:40,361 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3de15e4e-0d24-4cc5-9451-f58d8a41c055/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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_3de15e4e-0d24-4cc5-9451-f58d8a41c055/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3de15e4e-0d24-4cc5-9451-f58d8a41c055/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3de15e4e-0d24-4cc5-9451-f58d8a41c055/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3de15e4e-0d24-4cc5-9451-f58d8a41c055/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-lit/sssc12-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3de15e4e-0d24-4cc5-9451-f58d8a41c055/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3de15e4e-0d24-4cc5-9451-f58d8a41c055/bin/utaipan-verify-t7M7D8N6sZ --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 3f447624cefe078f3d1dfeed3af04dfcf2078828fba23b82e0579b17d6eb7f02 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:11:43,165 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:11:43,300 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3de15e4e-0d24-4cc5-9451-f58d8a41c055/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2023-11-19 04:11:43,309 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:11:43,310 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:11:43,355 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:11:43,356 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:11:43,357 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:11:43,358 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:11:43,363 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:11:43,364 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:11:43,364 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:11:43,365 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:11:43,367 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:11:43,367 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:11:43,368 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:11:43,369 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 04:11:43,369 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 04:11:43,370 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:11:43,372 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 04:11:43,372 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:11:43,373 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 04:11:43,374 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:11:43,374 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 04:11:43,375 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 04:11:43,375 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 04:11:43,376 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:11:43,376 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 04:11:43,377 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-19 04:11:43,377 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-19 04:11:43,379 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 04:11:43,379 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 04:11:43,380 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:11:43,380 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:11:43,381 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 04:11:43,381 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:11:43,382 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:11:43,383 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:11:43,383 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:11:43,384 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-19 04:11:43,384 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 04:11:43,385 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:11:43,385 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:11:43,385 INFO L153 SettingsManager]: * Logic for external solver=AUFBV 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_3de15e4e-0d24-4cc5-9451-f58d8a41c055/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3de15e4e-0d24-4cc5-9451-f58d8a41c055/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3f447624cefe078f3d1dfeed3af04dfcf2078828fba23b82e0579b17d6eb7f02 [2023-11-19 04:11:43,866 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:11:43,899 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:11:43,902 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:11:43,903 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:11:43,904 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:11:43,905 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3de15e4e-0d24-4cc5-9451-f58d8a41c055/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/pthread-lit/sssc12-2.i [2023-11-19 04:11:47,250 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:11:47,690 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:11:47,691 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3de15e4e-0d24-4cc5-9451-f58d8a41c055/sv-benchmarks/c/pthread-lit/sssc12-2.i [2023-11-19 04:11:47,735 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3de15e4e-0d24-4cc5-9451-f58d8a41c055/bin/utaipan-verify-t7M7D8N6sZ/data/015b9b82f/adfa371d5ffa49fba6e5fada7ce9889a/FLAGa93eabe9a [2023-11-19 04:11:47,758 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3de15e4e-0d24-4cc5-9451-f58d8a41c055/bin/utaipan-verify-t7M7D8N6sZ/data/015b9b82f/adfa371d5ffa49fba6e5fada7ce9889a [2023-11-19 04:11:47,765 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:11:47,767 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:11:47,770 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:11:47,771 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:11:47,780 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:11:47,781 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:11:47" (1/1) ... [2023-11-19 04:11:47,783 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5071fe09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:11:47, skipping insertion in model container [2023-11-19 04:11:47,783 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:11:47" (1/1) ... [2023-11-19 04:11:47,869 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:11:48,585 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:11:48,602 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:11:48,714 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:11:48,781 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:11:48,781 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:11:48,788 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:11:48,789 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:11:48 WrapperNode [2023-11-19 04:11:48,789 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:11:48,791 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:11:48,791 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:11:48,791 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:11:48,799 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:11:48" (1/1) ... [2023-11-19 04:11:48,821 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:11:48" (1/1) ... [2023-11-19 04:11:48,847 INFO L138 Inliner]: procedures = 278, calls = 24, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 85 [2023-11-19 04:11:48,847 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:11:48,848 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:11:48,848 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:11:48,849 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:11:48,858 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:11:48" (1/1) ... [2023-11-19 04:11:48,859 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:11:48" (1/1) ... [2023-11-19 04:11:48,863 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:11:48" (1/1) ... [2023-11-19 04:11:48,864 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:11:48" (1/1) ... [2023-11-19 04:11:48,873 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:11:48" (1/1) ... [2023-11-19 04:11:48,877 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:11:48" (1/1) ... [2023-11-19 04:11:48,881 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:11:48" (1/1) ... [2023-11-19 04:11:48,883 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:11:48" (1/1) ... [2023-11-19 04:11:48,887 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:11:48,888 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:11:48,889 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:11:48,889 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:11:48,890 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:11:48" (1/1) ... [2023-11-19 04:11:48,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:11:48,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3de15e4e-0d24-4cc5-9451-f58d8a41c055/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:11:48,940 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3de15e4e-0d24-4cc5-9451-f58d8a41c055/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 04:11:48,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3de15e4e-0d24-4cc5-9451-f58d8a41c055/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 04:11:48,998 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 04:11:48,999 INFO L130 BoogieDeclarations]: Found specification of procedure thr [2023-11-19 04:11:48,999 INFO L138 BoogieDeclarations]: Found implementation of procedure thr [2023-11-19 04:11:48,999 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 04:11:49,000 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 04:11:49,000 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-19 04:11:49,000 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-19 04:11:49,000 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 04:11:49,000 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 04:11:49,002 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 04:11:49,002 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:11:49,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:11:49,005 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 04:11:49,202 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:11:49,204 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:11:49,521 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:11:49,569 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:11:49,569 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-19 04:11:49,573 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:11:49 BoogieIcfgContainer [2023-11-19 04:11:49,573 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:11:49,576 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 04:11:49,576 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 04:11:49,579 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 04:11:49,580 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:11:47" (1/3) ... [2023-11-19 04:11:49,580 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f4437f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:11:49, skipping insertion in model container [2023-11-19 04:11:49,581 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:11:48" (2/3) ... [2023-11-19 04:11:49,581 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f4437f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:11:49, skipping insertion in model container [2023-11-19 04:11:49,585 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:11:49" (3/3) ... [2023-11-19 04:11:49,586 INFO L112 eAbstractionObserver]: Analyzing ICFG sssc12-2.i [2023-11-19 04:11:49,606 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 04:11:49,608 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-19 04:11:49,608 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 04:11:49,729 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 04:11:49,774 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-19 04:11:49,793 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 87 places, 91 transitions, 186 flow [2023-11-19 04:11:49,798 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 87 places, 91 transitions, 186 flow [2023-11-19 04:11:49,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 87 places, 91 transitions, 186 flow [2023-11-19 04:11:49,902 INFO L124 PetriNetUnfolderBase]: 8/108 cut-off events. [2023-11-19 04:11:49,902 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 04:11:49,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112 conditions, 108 events. 8/108 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 150 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 58. Up to 4 conditions per place. [2023-11-19 04:11:49,912 INFO L119 LiptonReduction]: Number of co-enabled transitions 1560 [2023-11-19 04:11:59,136 INFO L134 LiptonReduction]: Checked pairs total: 1621 [2023-11-19 04:11:59,137 INFO L136 LiptonReduction]: Total number of compositions: 106 [2023-11-19 04:11:59,161 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 17 places, 15 transitions, 34 flow [2023-11-19 04:11:59,180 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 53 states, 31 states have (on average 3.032258064516129) internal successors, (94), 52 states have internal predecessors, (94), 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) [2023-11-19 04:11:59,206 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 04:11:59,215 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;@299d824e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 04:11:59,216 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2023-11-19 04:11:59,219 INFO L276 IsEmpty]: Start isEmpty. Operand has 53 states, 31 states have (on average 3.032258064516129) internal successors, (94), 52 states have internal predecessors, (94), 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) [2023-11-19 04:11:59,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-19 04:11:59,226 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:11:59,227 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-19 04:11:59,228 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 7 more)] === [2023-11-19 04:11:59,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:11:59,240 INFO L85 PathProgramCache]: Analyzing trace with hash 13798, now seen corresponding path program 1 times [2023-11-19 04:11:59,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:11:59,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [700244346] [2023-11-19 04:11:59,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:11:59,256 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:11:59,256 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3de15e4e-0d24-4cc5-9451-f58d8a41c055/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:11:59,260 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3de15e4e-0d24-4cc5-9451-f58d8a41c055/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 04:11:59,272 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3de15e4e-0d24-4cc5-9451-f58d8a41c055/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-19 04:11:59,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:11:59,357 INFO L262 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-19 04:11:59,362 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:11:59,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:11:59,382 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:11:59,383 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:11:59,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [700244346] [2023-11-19 04:11:59,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [700244346] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:11:59,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:11:59,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 04:11:59,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84488924] [2023-11-19 04:11:59,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:11:59,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 04:11:59,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:11:59,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 04:11:59,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 04:11:59,424 INFO L87 Difference]: Start difference. First operand has 53 states, 31 states have (on average 3.032258064516129) internal successors, (94), 52 states have internal predecessors, (94), 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 2 states, 1 states have (on average 2.0) 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) [2023-11-19 04:11:59,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:11:59,546 INFO L93 Difference]: Finished difference Result 41 states and 71 transitions. [2023-11-19 04:11:59,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 04:11:59,550 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 2.0) 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 [2023-11-19 04:11:59,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:11:59,560 INFO L225 Difference]: With dead ends: 41 [2023-11-19 04:11:59,560 INFO L226 Difference]: Without dead ends: 41 [2023-11-19 04:11:59,561 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 04:11:59,567 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:11:59,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:11:59,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2023-11-19 04:11:59,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2023-11-19 04:11:59,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 27 states have (on average 2.6296296296296298) internal successors, (71), 40 states have internal predecessors, (71), 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) [2023-11-19 04:11:59,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 71 transitions. [2023-11-19 04:11:59,621 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 71 transitions. Word has length 2 [2023-11-19 04:11:59,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:11:59,622 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 71 transitions. [2023-11-19 04:11:59,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 2.0) 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) [2023-11-19 04:11:59,623 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 71 transitions. [2023-11-19 04:11:59,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-19 04:11:59,623 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:11:59,623 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-19 04:11:59,632 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3de15e4e-0d24-4cc5-9451-f58d8a41c055/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-11-19 04:11:59,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3de15e4e-0d24-4cc5-9451-f58d8a41c055/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:11:59,827 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 7 more)] === [2023-11-19 04:11:59,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:11:59,827 INFO L85 PathProgramCache]: Analyzing trace with hash 13786, now seen corresponding path program 1 times [2023-11-19 04:11:59,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:11:59,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1592853638] [2023-11-19 04:11:59,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:11:59,829 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:11:59,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3de15e4e-0d24-4cc5-9451-f58d8a41c055/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:11:59,834 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3de15e4e-0d24-4cc5-9451-f58d8a41c055/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 04:11:59,860 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3de15e4e-0d24-4cc5-9451-f58d8a41c055/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-19 04:11:59,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:11:59,931 INFO L262 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 04:11:59,932 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:12:00,018 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-19 04:12:00,019 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2023-11-19 04:12:00,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:12:00,068 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:12:00,069 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:12:00,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1592853638] [2023-11-19 04:12:00,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1592853638] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:12:00,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:12:00,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 04:12:00,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556009053] [2023-11-19 04:12:00,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:12:00,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:12:00,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:12:00,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:12:00,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:12:00,073 INFO L87 Difference]: Start difference. First operand 41 states and 71 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) [2023-11-19 04:12:00,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:12:00,146 INFO L93 Difference]: Finished difference Result 34 states and 58 transitions. [2023-11-19 04:12:00,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:12:00,148 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 [2023-11-19 04:12:00,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:12:00,149 INFO L225 Difference]: With dead ends: 34 [2023-11-19 04:12:00,150 INFO L226 Difference]: Without dead ends: 34 [2023-11-19 04:12:00,150 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 [2023-11-19 04:12:00,152 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 11 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:12:00,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 1 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:12:00,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2023-11-19 04:12:00,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2023-11-19 04:12:00,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 25 states have (on average 2.32) internal successors, (58), 33 states have internal predecessors, (58), 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) [2023-11-19 04:12:00,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 58 transitions. [2023-11-19 04:12:00,161 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 58 transitions. Word has length 2 [2023-11-19 04:12:00,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:12:00,161 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 58 transitions. [2023-11-19 04:12:00,162 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) [2023-11-19 04:12:00,162 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 58 transitions. [2023-11-19 04:12:00,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-19 04:12:00,163 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:12:00,163 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-19 04:12:00,176 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3de15e4e-0d24-4cc5-9451-f58d8a41c055/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-11-19 04:12:00,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3de15e4e-0d24-4cc5-9451-f58d8a41c055/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:12:00,370 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 7 more)] === [2023-11-19 04:12:00,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:12:00,371 INFO L85 PathProgramCache]: Analyzing trace with hash 13788, now seen corresponding path program 1 times [2023-11-19 04:12:00,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:12:00,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [244322624] [2023-11-19 04:12:00,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:12:00,372 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:12:00,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3de15e4e-0d24-4cc5-9451-f58d8a41c055/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:12:00,374 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3de15e4e-0d24-4cc5-9451-f58d8a41c055/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 04:12:00,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3de15e4e-0d24-4cc5-9451-f58d8a41c055/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-19 04:12:00,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:12:00,446 INFO L262 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 04:12:00,448 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:12:00,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:12:00,477 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2023-11-19 04:12:00,486 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-11-19 04:12:00,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:12:00,510 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:12:00,511 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:12:00,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [244322624] [2023-11-19 04:12:00,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [244322624] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:12:00,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:12:00,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 04:12:00,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110487077] [2023-11-19 04:12:00,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:12:00,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:12:00,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:12:00,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:12:00,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:12:00,536 INFO L87 Difference]: Start difference. First operand 34 states and 58 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) [2023-11-19 04:12:00,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:12:00,608 INFO L93 Difference]: Finished difference Result 27 states and 45 transitions. [2023-11-19 04:12:00,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:12:00,611 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 [2023-11-19 04:12:00,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:12:00,612 INFO L225 Difference]: With dead ends: 27 [2023-11-19 04:12:00,612 INFO L226 Difference]: Without dead ends: 27 [2023-11-19 04:12:00,613 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 [2023-11-19 04:12:00,614 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 10 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:12:00,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 1 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:12:00,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-11-19 04:12:00,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2023-11-19 04:12:00,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 23 states have (on average 1.9565217391304348) internal successors, (45), 26 states have internal predecessors, (45), 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) [2023-11-19 04:12:00,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 45 transitions. [2023-11-19 04:12:00,634 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 45 transitions. Word has length 2 [2023-11-19 04:12:00,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:12:00,635 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 45 transitions. [2023-11-19 04:12:00,635 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) [2023-11-19 04:12:00,635 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 45 transitions. [2023-11-19 04:12:00,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-19 04:12:00,636 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:12:00,637 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 04:12:00,650 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3de15e4e-0d24-4cc5-9451-f58d8a41c055/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-11-19 04:12:00,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3de15e4e-0d24-4cc5-9451-f58d8a41c055/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:12:00,840 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thrErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 7 more)] === [2023-11-19 04:12:00,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:12:00,841 INFO L85 PathProgramCache]: Analyzing trace with hash 411029806, now seen corresponding path program 1 times [2023-11-19 04:12:00,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:12:00,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [628130486] [2023-11-19 04:12:00,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:12:00,842 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:12:00,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3de15e4e-0d24-4cc5-9451-f58d8a41c055/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:12:00,845 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3de15e4e-0d24-4cc5-9451-f58d8a41c055/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 04:12:00,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3de15e4e-0d24-4cc5-9451-f58d8a41c055/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-11-19 04:12:00,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:12:00,956 INFO L262 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 04:12:00,958 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:12:00,980 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-19 04:12:01,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:12:01,001 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-19 04:12:01,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:12:01,020 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:12:01,021 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:12:01,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [628130486] [2023-11-19 04:12:01,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [628130486] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:12:01,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:12:01,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 04:12:01,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253313981] [2023-11-19 04:12:01,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:12:01,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:12:01,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:12:01,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:12:01,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:12:01,026 INFO L87 Difference]: Start difference. First operand 27 states and 45 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:12:01,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:12:01,086 INFO L93 Difference]: Finished difference Result 23 states and 38 transitions. [2023-11-19 04:12:01,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:12:01,090 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-19 04:12:01,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:12:01,091 INFO L225 Difference]: With dead ends: 23 [2023-11-19 04:12:01,091 INFO L226 Difference]: Without dead ends: 23 [2023-11-19 04:12:01,092 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:12:01,093 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 6 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:12:01,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 1 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:12:01,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-11-19 04:12:01,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2023-11-19 04:12:01,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 20 states have (on average 1.9) internal successors, (38), 22 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:12:01,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 38 transitions. [2023-11-19 04:12:01,099 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 38 transitions. Word has length 5 [2023-11-19 04:12:01,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:12:01,102 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 38 transitions. [2023-11-19 04:12:01,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:12:01,102 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 38 transitions. [2023-11-19 04:12:01,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-19 04:12:01,103 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:12:01,103 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 04:12:01,120 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3de15e4e-0d24-4cc5-9451-f58d8a41c055/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-11-19 04:12:01,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3de15e4e-0d24-4cc5-9451-f58d8a41c055/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:12:01,310 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thrErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 7 more)] === [2023-11-19 04:12:01,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:12:01,310 INFO L85 PathProgramCache]: Analyzing trace with hash 411029791, now seen corresponding path program 1 times [2023-11-19 04:12:01,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:12:01,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [79930131] [2023-11-19 04:12:01,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:12:01,312 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:12:01,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3de15e4e-0d24-4cc5-9451-f58d8a41c055/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:12:01,313 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3de15e4e-0d24-4cc5-9451-f58d8a41c055/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 04:12:01,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3de15e4e-0d24-4cc5-9451-f58d8a41c055/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-11-19 04:12:01,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:12:01,404 INFO L262 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 04:12:01,406 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:12:01,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:12:01,647 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:12:01,647 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:12:01,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [79930131] [2023-11-19 04:12:01,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [79930131] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:12:01,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:12:01,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:12:01,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826944117] [2023-11-19 04:12:01,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:12:01,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 04:12:01,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:12:01,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 04:12:01,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 04:12:01,658 INFO L87 Difference]: Start difference. First operand 23 states and 38 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) 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) [2023-11-19 04:12:01,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:12:01,785 INFO L93 Difference]: Finished difference Result 35 states and 59 transitions. [2023-11-19 04:12:01,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 04:12:01,788 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) 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 [2023-11-19 04:12:01,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:12:01,789 INFO L225 Difference]: With dead ends: 35 [2023-11-19 04:12:01,789 INFO L226 Difference]: Without dead ends: 35 [2023-11-19 04:12:01,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 04:12:01,791 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 7 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:12:01,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 4 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:12:01,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-11-19 04:12:01,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 27. [2023-11-19 04:12:01,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 24 states have (on average 2.2083333333333335) internal successors, (53), 26 states have internal predecessors, (53), 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) [2023-11-19 04:12:01,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 53 transitions. [2023-11-19 04:12:01,810 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 53 transitions. Word has length 5 [2023-11-19 04:12:01,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:12:01,811 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 53 transitions. [2023-11-19 04:12:01,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) 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) [2023-11-19 04:12:01,812 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 53 transitions. [2023-11-19 04:12:01,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-19 04:12:01,813 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:12:01,813 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 04:12:01,825 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3de15e4e-0d24-4cc5-9451-f58d8a41c055/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-11-19 04:12:02,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3de15e4e-0d24-4cc5-9451-f58d8a41c055/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:12:02,024 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thrErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 7 more)] === [2023-11-19 04:12:02,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:12:02,025 INFO L85 PathProgramCache]: Analyzing trace with hash 411029807, now seen corresponding path program 1 times [2023-11-19 04:12:02,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:12:02,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1264501519] [2023-11-19 04:12:02,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:12:02,025 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:12:02,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3de15e4e-0d24-4cc5-9451-f58d8a41c055/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:12:02,027 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3de15e4e-0d24-4cc5-9451-f58d8a41c055/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 04:12:02,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3de15e4e-0d24-4cc5-9451-f58d8a41c055/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-11-19 04:12:02,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 04:12:02,110 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 04:12:02,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 04:12:02,178 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2023-11-19 04:12:02,178 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 04:12:02,180 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location thrErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 10 remaining) [2023-11-19 04:12:02,182 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 10 remaining) [2023-11-19 04:12:02,183 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 10 remaining) [2023-11-19 04:12:02,183 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (6 of 10 remaining) [2023-11-19 04:12:02,183 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 10 remaining) [2023-11-19 04:12:02,183 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONMEMORY_LEAK (4 of 10 remaining) [2023-11-19 04:12:02,184 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 10 remaining) [2023-11-19 04:12:02,184 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 10 remaining) [2023-11-19 04:12:02,184 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 10 remaining) [2023-11-19 04:12:02,184 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 10 remaining) [2023-11-19 04:12:02,193 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3de15e4e-0d24-4cc5-9451-f58d8a41c055/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-11-19 04:12:02,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3de15e4e-0d24-4cc5-9451-f58d8a41c055/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:12:02,387 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-11-19 04:12:02,392 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-19 04:12:02,393 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 04:12:02,409 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre5 could not be translated [2023-11-19 04:12:02,417 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 04:12:02 BasicIcfg [2023-11-19 04:12:02,417 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 04:12:02,418 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 04:12:02,418 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 04:12:02,418 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 04:12:02,419 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:11:49" (3/4) ... [2023-11-19 04:12:02,421 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-19 04:12:02,422 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 04:12:02,422 INFO L158 Benchmark]: Toolchain (without parser) took 14655.85ms. Allocated memory was 81.8MB in the beginning and 98.6MB in the end (delta: 16.8MB). Free memory was 56.3MB in the beginning and 58.4MB in the end (delta: -2.1MB). Peak memory consumption was 14.9MB. Max. memory is 16.1GB. [2023-11-19 04:12:02,422 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 56.6MB. Free memory was 32.8MB in the beginning and 32.7MB in the end (delta: 92.4kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:12:02,423 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1019.59ms. Allocated memory is still 81.8MB. Free memory was 56.1MB in the beginning and 44.6MB in the end (delta: 11.6MB). Peak memory consumption was 17.6MB. Max. memory is 16.1GB. [2023-11-19 04:12:02,423 INFO L158 Benchmark]: Boogie Procedure Inliner took 56.96ms. Allocated memory is still 81.8MB. Free memory was 44.6MB in the beginning and 42.2MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 04:12:02,424 INFO L158 Benchmark]: Boogie Preprocessor took 39.41ms. Allocated memory is still 81.8MB. Free memory was 42.2MB in the beginning and 40.4MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 04:12:02,424 INFO L158 Benchmark]: RCFGBuilder took 685.13ms. Allocated memory is still 81.8MB. Free memory was 40.4MB in the beginning and 46.5MB in the end (delta: -6.1MB). Peak memory consumption was 9.2MB. Max. memory is 16.1GB. [2023-11-19 04:12:02,425 INFO L158 Benchmark]: TraceAbstraction took 12841.73ms. Allocated memory was 81.8MB in the beginning and 98.6MB in the end (delta: 16.8MB). Free memory was 45.7MB in the beginning and 59.0MB in the end (delta: -13.3MB). Peak memory consumption was 2.8MB. Max. memory is 16.1GB. [2023-11-19 04:12:02,425 INFO L158 Benchmark]: Witness Printer took 3.90ms. Allocated memory is still 98.6MB. Free memory is still 58.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:12:02,427 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 56.6MB. Free memory was 32.8MB in the beginning and 32.7MB in the end (delta: 92.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1019.59ms. Allocated memory is still 81.8MB. Free memory was 56.1MB in the beginning and 44.6MB in the end (delta: 11.6MB). Peak memory consumption was 17.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 56.96ms. Allocated memory is still 81.8MB. Free memory was 44.6MB in the beginning and 42.2MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 39.41ms. Allocated memory is still 81.8MB. Free memory was 42.2MB in the beginning and 40.4MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 685.13ms. Allocated memory is still 81.8MB. Free memory was 40.4MB in the beginning and 46.5MB in the end (delta: -6.1MB). Peak memory consumption was 9.2MB. Max. memory is 16.1GB. * TraceAbstraction took 12841.73ms. Allocated memory was 81.8MB in the beginning and 98.6MB in the end (delta: 16.8MB). Free memory was 45.7MB in the beginning and 59.0MB in the end (delta: -13.3MB). Peak memory consumption was 2.8MB. Max. memory is 16.1GB. * Witness Printer took 3.90ms. Allocated memory is still 98.6MB. Free memory is still 58.4MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre5 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 9.3s, 87 PlacesBefore, 17 PlacesAfterwards, 91 TransitionsBefore, 15 TransitionsAfterwards, 1560 CoEnabledTransitionPairs, 6 FixpointIterations, 28 TrivialSequentialCompositions, 56 ConcurrentSequentialCompositions, 5 TrivialYvCompositions, 11 ConcurrentYvCompositions, 6 ChoiceCompositions, 106 TotalNumberOfCompositions, 1621 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1528, independent: 1512, independent conditional: 0, independent unconditional: 1512, dependent: 16, dependent conditional: 0, dependent unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1026, independent: 1020, independent conditional: 0, independent unconditional: 1020, dependent: 6, dependent conditional: 0, dependent unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1026, independent: 1016, independent conditional: 0, independent unconditional: 1016, dependent: 10, dependent conditional: 0, dependent unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 10, independent: 4, independent conditional: 0, independent unconditional: 4, dependent: 6, dependent conditional: 0, dependent unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 158, independent: 21, independent conditional: 0, independent unconditional: 21, dependent: 137, dependent conditional: 0, dependent unconditional: 137, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1528, independent: 492, independent conditional: 0, independent unconditional: 492, dependent: 10, dependent conditional: 0, dependent unconditional: 10, unknown: 1026, unknown conditional: 0, unknown unconditional: 1026] , Statistics on independence cache: Total cache size (in pairs): 11, Positive cache size: 10, Positive conditional cache size: 0, Positive unconditional cache size: 10, Negative cache size: 1, Negative conditional cache size: 0, Negative unconditional cache size: 1, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: overapproximation of memtrack at line 991. Possible FailurePath: [L1005] 0 int *data; [L1006] 0 volatile int len; [L1007] 0 volatile int next; [L1008] 0 volatile int lock; [L1039] 0 pthread_t t; [L1040] 0 next = 0 [L1041] 0 lock = 0 [L1042] 0 len = __VERIFIER_nondet_int() [L1043] CALL 0 assume_abort_if_not(len > 0) [L994] COND FALSE 0 !(!cond) [L1043] RET 0 assume_abort_if_not(len > 0) [L1044] 0 data = malloc(sizeof(int) * len) [L1045] COND TRUE 0 1 [L1046] FCALL, FORK 0 pthread_create(&t, 0, thr, 0) VAL [data={3:0}, len=1073741824, lock=0, next=0, t={15:0}] [L1022] 1 int c, end; [L1023] 1 c = 0 [L1024] 1 end = 0 [L1025] CALL 1 acquire() [L1011] CALL 1 assume_abort_if_not(lock == 0) [L994] COND FALSE 1 !(!cond) [L1011] RET 1 assume_abort_if_not(lock == 0) [L1012] 1 lock = 1 [L1025] RET 1 acquire() [L1026] COND TRUE 1 next + 10 <= len [L1027] 1 c = next [L1028] EXPR 1 end = next + 10 [L1028] 1 next = end = next + 10 [L1030] CALL 1 release() [L1017] CALL 1 assume_abort_if_not(lock == 1) [L994] COND FALSE 1 !(!cond) [L1017] RET 1 assume_abort_if_not(lock == 1) [L1018] 1 lock = 0 [L1030] RET 1 release() [L1031] COND TRUE 1 c < end [L1032] CALL 1 __VERIFIER_assert(0 <= c && c < len) [L997] COND FALSE 1 !(!(cond)) [L1032] RET 1 __VERIFIER_assert(0 <= c && c < len) [L1033] 1 data[c] = 0 - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1038]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1046]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 991]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 120 locations, 10 error locations. Started 1 CEGAR loops. OverallTime: 12.6s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 9.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 34 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 34 mSDsluCounter, 8 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 68 IncrementalHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 6 mSDtfsCounter, 68 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=53occurred in iteration=0, InterpolantAutomatonStates: 15, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 8 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 11 ConstructedInterpolants, 1 QuantifiedInterpolants, 101 SizeOfPredicates, 9 NumberOfNonLiveVariables, 177 ConjunctsInSsa, 21 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-19 04:12:02,462 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3de15e4e-0d24-4cc5-9451-f58d8a41c055/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample