./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-regression/volatile_alias.c_1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3d88e1a-8cdf-42c5-b423-eb2692827358/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3d88e1a-8cdf-42c5-b423-eb2692827358/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3d88e1a-8cdf-42c5-b423-eb2692827358/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3d88e1a-8cdf-42c5-b423-eb2692827358/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-regression/volatile_alias.c_1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3d88e1a-8cdf-42c5-b423-eb2692827358/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3d88e1a-8cdf-42c5-b423-eb2692827358/bin/uautomizer-verify-aQ6SnzHsRB --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f1bb79a65ae985e12740836541686d88e393fdc93f4f86744adfbdfdcbfcd51e --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 20:00:56,547 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 20:00:56,608 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3d88e1a-8cdf-42c5-b423-eb2692827358/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-27 20:00:56,613 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 20:00:56,614 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 20:00:56,639 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 20:00:56,640 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 20:00:56,640 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 20:00:56,640 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 20:00:56,640 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 20:00:56,641 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 20:00:56,641 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 20:00:56,641 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 20:00:56,641 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 20:00:56,641 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 20:00:56,642 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 20:00:56,642 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 20:00:56,642 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 20:00:56,642 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 20:00:56,642 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 20:00:56,642 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-27 20:00:56,642 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-27 20:00:56,642 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-27 20:00:56,643 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 20:00:56,643 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-27 20:00:56,643 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-27 20:00:56,643 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 20:00:56,643 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 20:00:56,643 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 20:00:56,643 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 20:00:56,643 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:00:56,643 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:00:56,644 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:00:56,644 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:00:56,644 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 20:00:56,644 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:00:56,644 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:00:56,644 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:00:56,644 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:00:56,645 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 20:00:56,645 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 20:00:56,645 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 20:00:56,645 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 20:00:56,645 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 20:00:56,645 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 20:00:56,645 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 20:00:56,645 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 20:00:56,645 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_f3d88e1a-8cdf-42c5-b423-eb2692827358/bin/uautomizer-verify-aQ6SnzHsRB 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 -> Automizer 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 -> f1bb79a65ae985e12740836541686d88e393fdc93f4f86744adfbdfdcbfcd51e [2024-11-27 20:00:56,979 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 20:00:56,994 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 20:00:57,000 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 20:00:57,002 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 20:00:57,002 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 20:00:57,003 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3d88e1a-8cdf-42c5-b423-eb2692827358/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/ldv-regression/volatile_alias.c_1.i [2024-11-27 20:01:00,130 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3d88e1a-8cdf-42c5-b423-eb2692827358/bin/uautomizer-verify-aQ6SnzHsRB/data/d316cfc95/258269dc0ed74d03b392415cfa14006c/FLAG80fcefb60 [2024-11-27 20:01:00,377 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 20:01:00,378 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3d88e1a-8cdf-42c5-b423-eb2692827358/sv-benchmarks/c/ldv-regression/volatile_alias.c_1.i [2024-11-27 20:01:00,387 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3d88e1a-8cdf-42c5-b423-eb2692827358/bin/uautomizer-verify-aQ6SnzHsRB/data/d316cfc95/258269dc0ed74d03b392415cfa14006c/FLAG80fcefb60 [2024-11-27 20:01:00,405 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3d88e1a-8cdf-42c5-b423-eb2692827358/bin/uautomizer-verify-aQ6SnzHsRB/data/d316cfc95/258269dc0ed74d03b392415cfa14006c [2024-11-27 20:01:00,407 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 20:01:00,409 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 20:01:00,410 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 20:01:00,410 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 20:01:00,414 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 20:01:00,416 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:01:00" (1/1) ... [2024-11-27 20:01:00,417 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bfaaabc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:01:00, skipping insertion in model container [2024-11-27 20:01:00,419 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:01:00" (1/1) ... [2024-11-27 20:01:00,436 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 20:01:00,612 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:01:00,626 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 20:01:00,641 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:01:00,656 INFO L204 MainTranslator]: Completed translation [2024-11-27 20:01:00,656 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:01:00 WrapperNode [2024-11-27 20:01:00,657 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 20:01:00,658 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 20:01:00,658 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 20:01:00,658 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 20:01:00,673 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:01:00" (1/1) ... [2024-11-27 20:01:00,679 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:01:00" (1/1) ... [2024-11-27 20:01:00,701 INFO L138 Inliner]: procedures = 12, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 30 [2024-11-27 20:01:00,703 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 20:01:00,704 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 20:01:00,704 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 20:01:00,704 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 20:01:00,713 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:01:00" (1/1) ... [2024-11-27 20:01:00,714 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:01:00" (1/1) ... [2024-11-27 20:01:00,717 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:01:00" (1/1) ... [2024-11-27 20:01:00,731 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1]. The 1 writes are split as follows [0, 1]. [2024-11-27 20:01:00,731 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:01:00" (1/1) ... [2024-11-27 20:01:00,731 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:01:00" (1/1) ... [2024-11-27 20:01:00,738 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:01:00" (1/1) ... [2024-11-27 20:01:00,743 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:01:00" (1/1) ... [2024-11-27 20:01:00,745 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:01:00" (1/1) ... [2024-11-27 20:01:00,747 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:01:00" (1/1) ... [2024-11-27 20:01:00,748 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:01:00" (1/1) ... [2024-11-27 20:01:00,750 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 20:01:00,752 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 20:01:00,754 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 20:01:00,754 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 20:01:00,755 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:01:00" (1/1) ... [2024-11-27 20:01:00,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:01:00,779 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3d88e1a-8cdf-42c5-b423-eb2692827358/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:01:00,798 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3d88e1a-8cdf-42c5-b423-eb2692827358/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 20:01:00,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3d88e1a-8cdf-42c5-b423-eb2692827358/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 20:01:00,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-27 20:01:00,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-27 20:01:00,837 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 20:01:00,837 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 20:01:00,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 20:01:00,837 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-27 20:01:00,837 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-27 20:01:00,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 20:01:00,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-27 20:01:00,837 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-27 20:01:00,837 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-27 20:01:00,929 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 20:01:00,932 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 20:01:01,086 INFO L? ?]: Removed 17 outVars from TransFormulas that were not future-live. [2024-11-27 20:01:01,087 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 20:01:01,097 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 20:01:01,098 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-27 20:01:01,098 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:01:01 BoogieIcfgContainer [2024-11-27 20:01:01,098 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 20:01:01,101 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 20:01:01,101 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 20:01:01,107 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 20:01:01,107 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 08:01:00" (1/3) ... [2024-11-27 20:01:01,109 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@368da603 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:01:01, skipping insertion in model container [2024-11-27 20:01:01,109 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:01:00" (2/3) ... [2024-11-27 20:01:01,111 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@368da603 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:01:01, skipping insertion in model container [2024-11-27 20:01:01,111 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:01:01" (3/3) ... [2024-11-27 20:01:01,113 INFO L128 eAbstractionObserver]: Analyzing ICFG volatile_alias.c_1.i [2024-11-27 20:01:01,133 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 20:01:01,135 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG volatile_alias.c_1.i that has 1 procedures, 22 locations, 1 initial locations, 0 loop locations, and 8 error locations. [2024-11-27 20:01:01,187 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 20:01:01,206 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, 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;@154bfa57, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 20:01:01,207 INFO L334 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-11-27 20:01:01,212 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 21 states have internal predecessors, (22), 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) [2024-11-27 20:01:01,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-27 20:01:01,219 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:01:01,219 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-27 20:01:01,220 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-27 20:01:01,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:01:01,224 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2024-11-27 20:01:01,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:01:01,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68886549] [2024-11-27 20:01:01,231 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:01:01,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:01:01,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:01:01,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:01:01,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:01:01,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68886549] [2024-11-27 20:01:01,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68886549] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:01:01,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:01:01,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 20:01:01,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127789372] [2024-11-27 20:01:01,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:01:01,431 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:01:01,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:01:01,465 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:01:01,466 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:01:01,468 INFO L87 Difference]: Start difference. First operand has 22 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 21 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) [2024-11-27 20:01:01,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:01:01,511 INFO L93 Difference]: Finished difference Result 19 states and 18 transitions. [2024-11-27 20:01:01,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:01:01,513 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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 3 [2024-11-27 20:01:01,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:01:01,524 INFO L225 Difference]: With dead ends: 19 [2024-11-27 20:01:01,524 INFO L226 Difference]: Without dead ends: 17 [2024-11-27 20:01:01,526 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:01:01,529 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 10 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:01:01,529 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 12 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:01:01,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2024-11-27 20:01:01,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2024-11-27 20:01:01,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 16 states have internal predecessors, (16), 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) [2024-11-27 20:01:01,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 16 transitions. [2024-11-27 20:01:01,564 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 16 transitions. Word has length 3 [2024-11-27 20:01:01,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:01:01,564 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 16 transitions. [2024-11-27 20:01:01,564 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) [2024-11-27 20:01:01,564 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 16 transitions. [2024-11-27 20:01:01,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-27 20:01:01,565 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:01:01,565 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-27 20:01:01,565 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-27 20:01:01,565 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-27 20:01:01,566 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:01:01,566 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2024-11-27 20:01:01,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:01:01,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293895176] [2024-11-27 20:01:01,566 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:01:01,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:01:01,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:01:01,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:01:01,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:01:01,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293895176] [2024-11-27 20:01:01,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293895176] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:01:01,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:01:01,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 20:01:01,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957584905] [2024-11-27 20:01:01,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:01:01,719 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:01:01,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:01:01,720 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:01:01,720 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:01:01,720 INFO L87 Difference]: Start difference. First operand 17 states and 16 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) [2024-11-27 20:01:01,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:01:01,742 INFO L93 Difference]: Finished difference Result 15 states and 14 transitions. [2024-11-27 20:01:01,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:01:01,743 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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 3 [2024-11-27 20:01:01,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:01:01,743 INFO L225 Difference]: With dead ends: 15 [2024-11-27 20:01:01,743 INFO L226 Difference]: Without dead ends: 15 [2024-11-27 20:01:01,743 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:01:01,744 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 1 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:01:01,745 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 19 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:01:01,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2024-11-27 20:01:01,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2024-11-27 20:01:01,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 14 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:01:01,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 14 transitions. [2024-11-27 20:01:01,747 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 14 transitions. Word has length 3 [2024-11-27 20:01:01,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:01:01,748 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 14 transitions. [2024-11-27 20:01:01,748 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) [2024-11-27 20:01:01,748 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 14 transitions. [2024-11-27 20:01:01,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-27 20:01:01,748 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:01:01,748 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-27 20:01:01,749 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-27 20:01:01,749 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-27 20:01:01,749 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:01:01,750 INFO L85 PathProgramCache]: Analyzing trace with hash 889446152, now seen corresponding path program 1 times [2024-11-27 20:01:01,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:01:01,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044678370] [2024-11-27 20:01:01,750 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:01:01,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:01:01,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:01:01,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:01:01,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:01:01,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044678370] [2024-11-27 20:01:01,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044678370] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:01:01,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:01:01,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 20:01:01,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214255943] [2024-11-27 20:01:01,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:01:01,931 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:01:01,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:01:01,931 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:01:01,932 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:01:01,932 INFO L87 Difference]: Start difference. First operand 15 states and 14 transitions. Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 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) [2024-11-27 20:01:01,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:01:01,974 INFO L93 Difference]: Finished difference Result 14 states and 13 transitions. [2024-11-27 20:01:01,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:01:01,975 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 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 6 [2024-11-27 20:01:01,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:01:01,975 INFO L225 Difference]: With dead ends: 14 [2024-11-27 20:01:01,975 INFO L226 Difference]: Without dead ends: 14 [2024-11-27 20:01:01,975 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:01:01,976 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 4 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:01:01,976 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 17 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:01:01,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2024-11-27 20:01:01,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2024-11-27 20:01:01,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 13 states have internal predecessors, (13), 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) [2024-11-27 20:01:01,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 13 transitions. [2024-11-27 20:01:01,981 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 13 transitions. Word has length 6 [2024-11-27 20:01:01,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:01:01,981 INFO L471 AbstractCegarLoop]: Abstraction has 14 states and 13 transitions. [2024-11-27 20:01:01,981 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 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) [2024-11-27 20:01:01,982 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 13 transitions. [2024-11-27 20:01:01,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-27 20:01:01,982 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:01:01,982 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-27 20:01:01,982 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-27 20:01:01,983 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-27 20:01:01,987 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:01:01,987 INFO L85 PathProgramCache]: Analyzing trace with hash 889446153, now seen corresponding path program 1 times [2024-11-27 20:01:01,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:01:01,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341670699] [2024-11-27 20:01:01,988 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:01:01,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:01:02,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:01:02,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:01:02,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:01:02,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341670699] [2024-11-27 20:01:02,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341670699] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:01:02,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:01:02,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 20:01:02,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648730549] [2024-11-27 20:01:02,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:01:02,128 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:01:02,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:01:02,128 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:01:02,129 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:01:02,129 INFO L87 Difference]: Start difference. First operand 14 states and 13 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2024-11-27 20:01:02,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:01:02,145 INFO L93 Difference]: Finished difference Result 13 states and 12 transitions. [2024-11-27 20:01:02,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:01:02,146 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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 6 [2024-11-27 20:01:02,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:01:02,147 INFO L225 Difference]: With dead ends: 13 [2024-11-27 20:01:02,147 INFO L226 Difference]: Without dead ends: 13 [2024-11-27 20:01:02,147 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:01:02,148 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:01:02,148 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 15 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:01:02,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2024-11-27 20:01:02,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2024-11-27 20:01:02,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 12 states have internal predecessors, (12), 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) [2024-11-27 20:01:02,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 12 transitions. [2024-11-27 20:01:02,154 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 12 transitions. Word has length 6 [2024-11-27 20:01:02,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:01:02,154 INFO L471 AbstractCegarLoop]: Abstraction has 13 states and 12 transitions. [2024-11-27 20:01:02,154 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2024-11-27 20:01:02,154 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 12 transitions. [2024-11-27 20:01:02,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-27 20:01:02,154 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:01:02,155 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:01:02,155 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-27 20:01:02,155 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-27 20:01:02,159 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:01:02,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1837058322, now seen corresponding path program 1 times [2024-11-27 20:01:02,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:01:02,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493524226] [2024-11-27 20:01:02,159 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:01:02,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:01:02,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:01:02,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:01:02,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:01:02,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493524226] [2024-11-27 20:01:02,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493524226] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:01:02,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:01:02,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:01:02,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163963173] [2024-11-27 20:01:02,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:01:02,327 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:01:02,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:01:02,328 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:01:02,328 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:01:02,328 INFO L87 Difference]: Start difference. First operand 13 states and 12 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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) [2024-11-27 20:01:02,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:01:02,359 INFO L93 Difference]: Finished difference Result 12 states and 11 transitions. [2024-11-27 20:01:02,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:01:02,364 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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 9 [2024-11-27 20:01:02,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:01:02,364 INFO L225 Difference]: With dead ends: 12 [2024-11-27 20:01:02,364 INFO L226 Difference]: Without dead ends: 10 [2024-11-27 20:01:02,365 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:01:02,365 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 3 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 12 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 [2024-11-27 20:01:02,366 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 12 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:01:02,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2024-11-27 20:01:02,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2024-11-27 20:01:02,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.0) internal successors, (9), 9 states have internal predecessors, (9), 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) [2024-11-27 20:01:02,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 9 transitions. [2024-11-27 20:01:02,370 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 9 transitions. Word has length 9 [2024-11-27 20:01:02,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:01:02,370 INFO L471 AbstractCegarLoop]: Abstraction has 10 states and 9 transitions. [2024-11-27 20:01:02,371 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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) [2024-11-27 20:01:02,371 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 9 transitions. [2024-11-27 20:01:02,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-27 20:01:02,371 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:01:02,371 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:01:02,371 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-27 20:01:02,371 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-27 20:01:02,372 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:01:02,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1837050377, now seen corresponding path program 1 times [2024-11-27 20:01:02,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:01:02,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172040166] [2024-11-27 20:01:02,372 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:01:02,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:01:02,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:01:02,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:01:02,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:01:02,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172040166] [2024-11-27 20:01:02,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172040166] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:01:02,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:01:02,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 20:01:02,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346593607] [2024-11-27 20:01:02,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:01:02,556 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 20:01:02,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:01:02,556 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 20:01:02,556 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:01:02,556 INFO L87 Difference]: Start difference. First operand 10 states and 9 transitions. Second operand has 6 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 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) [2024-11-27 20:01:02,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:01:02,601 INFO L93 Difference]: Finished difference Result 7 states and 6 transitions. [2024-11-27 20:01:02,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 20:01:02,602 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 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 9 [2024-11-27 20:01:02,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:01:02,602 INFO L225 Difference]: With dead ends: 7 [2024-11-27 20:01:02,602 INFO L226 Difference]: Without dead ends: 0 [2024-11-27 20:01:02,603 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:01:02,603 INFO L435 NwaCegarLoop]: 3 mSDtfsCounter, 1 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:01:02,604 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 9 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:01:02,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-27 20:01:02,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-27 20:01:02,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:01:02,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-27 20:01:02,605 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2024-11-27 20:01:02,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:01:02,607 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-27 20:01:02,607 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 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) [2024-11-27 20:01:02,607 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-27 20:01:02,608 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-27 20:01:02,610 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 8 remaining) [2024-11-27 20:01:02,611 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 8 remaining) [2024-11-27 20:01:02,611 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 8 remaining) [2024-11-27 20:01:02,611 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 8 remaining) [2024-11-27 20:01:02,611 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 8 remaining) [2024-11-27 20:01:02,611 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 8 remaining) [2024-11-27 20:01:02,611 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK (1 of 8 remaining) [2024-11-27 20:01:02,611 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK (0 of 8 remaining) [2024-11-27 20:01:02,612 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-27 20:01:02,616 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2024-11-27 20:01:02,618 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-27 20:01:02,623 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.11 08:01:02 BoogieIcfgContainer [2024-11-27 20:01:02,623 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-27 20:01:02,624 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-27 20:01:02,624 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-27 20:01:02,624 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-27 20:01:02,626 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:01:01" (3/4) ... [2024-11-27 20:01:02,628 INFO L146 WitnessPrinter]: Generating witness for correct program [2024-11-27 20:01:02,635 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2024-11-27 20:01:02,635 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2024-11-27 20:01:02,636 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-27 20:01:02,636 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-27 20:01:02,720 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3d88e1a-8cdf-42c5-b423-eb2692827358/bin/uautomizer-verify-aQ6SnzHsRB/witness.graphml [2024-11-27 20:01:02,721 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3d88e1a-8cdf-42c5-b423-eb2692827358/bin/uautomizer-verify-aQ6SnzHsRB/witness.yml [2024-11-27 20:01:02,721 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-27 20:01:02,725 INFO L158 Benchmark]: Toolchain (without parser) took 2313.01ms. Allocated memory is still 142.6MB. Free memory was 117.4MB in the beginning and 91.5MB in the end (delta: 25.9MB). Peak memory consumption was 20.8MB. Max. memory is 16.1GB. [2024-11-27 20:01:02,725 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 117.4MB. Free memory is still 73.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 20:01:02,726 INFO L158 Benchmark]: CACSL2BoogieTranslator took 247.29ms. Allocated memory is still 142.6MB. Free memory was 117.2MB in the beginning and 106.8MB in the end (delta: 10.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-27 20:01:02,726 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.26ms. Allocated memory is still 142.6MB. Free memory was 106.8MB in the beginning and 105.9MB in the end (delta: 928.0kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 20:01:02,726 INFO L158 Benchmark]: Boogie Preprocessor took 47.06ms. Allocated memory is still 142.6MB. Free memory was 105.9MB in the beginning and 104.7MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 20:01:02,728 INFO L158 Benchmark]: RCFGBuilder took 346.79ms. Allocated memory is still 142.6MB. Free memory was 104.7MB in the beginning and 94.5MB in the end (delta: 10.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-27 20:01:02,728 INFO L158 Benchmark]: TraceAbstraction took 1521.90ms. Allocated memory is still 142.6MB. Free memory was 94.1MB in the beginning and 96.0MB in the end (delta: -1.9MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 20:01:02,728 INFO L158 Benchmark]: Witness Printer took 97.31ms. Allocated memory is still 142.6MB. Free memory was 96.0MB in the beginning and 91.5MB in the end (delta: 4.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 20:01:02,730 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 117.4MB. Free memory is still 73.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 247.29ms. Allocated memory is still 142.6MB. Free memory was 117.2MB in the beginning and 106.8MB in the end (delta: 10.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.26ms. Allocated memory is still 142.6MB. Free memory was 106.8MB in the beginning and 105.9MB in the end (delta: 928.0kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 47.06ms. Allocated memory is still 142.6MB. Free memory was 105.9MB in the beginning and 104.7MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 346.79ms. Allocated memory is still 142.6MB. Free memory was 104.7MB in the beginning and 94.5MB in the end (delta: 10.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 1521.90ms. Allocated memory is still 142.6MB. Free memory was 94.1MB in the beginning and 96.0MB in the end (delta: -1.9MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 97.31ms. Allocated memory is still 142.6MB. Free memory was 96.0MB in the beginning and 91.5MB in the end (delta: 4.5MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 3]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 18]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 22 locations, 8 error locations. Started 1 CEGAR loops. OverallTime: 1.4s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 19 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 19 mSDsluCounter, 84 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 33 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 65 IncrementalHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 51 mSDtfsCounter, 65 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=0, InterpolantAutomatonStates: 22, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 30 ConstructedInterpolants, 0 QuantifiedInterpolants, 166 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-27 20:01:02,752 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3d88e1a-8cdf-42c5-b423-eb2692827358/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE