./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe016_tso.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fd7969-72a5-4c58-8a55-b42d6f074416/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fd7969-72a5-4c58-8a55-b42d6f074416/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fd7969-72a5-4c58-8a55-b42d6f074416/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fd7969-72a5-4c58-8a55-b42d6f074416/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe016_tso.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fd7969-72a5-4c58-8a55-b42d6f074416/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fd7969-72a5-4c58-8a55-b42d6f074416/bin/utaipan-WLngWcDbfI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 01a2c96cfabf5ea27d44ac8a8fb1ac0f39d36a0a ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:30:18,484 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:30:18,493 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:30:18,538 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:30:18,539 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:30:18,545 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:30:18,548 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:30:18,553 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:30:18,555 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:30:18,558 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:30:18,560 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:30:18,562 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:30:18,563 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:30:18,569 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:30:18,571 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:30:18,573 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:30:18,575 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:30:18,579 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:30:18,582 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:30:18,590 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:30:18,593 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:30:18,594 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:30:18,598 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:30:18,599 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:30:18,609 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:30:18,610 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:30:18,610 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:30:18,612 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:30:18,613 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:30:18,614 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:30:18,615 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:30:18,616 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:30:18,618 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:30:18,619 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:30:18,622 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:30:18,622 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:30:18,623 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:30:18,623 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:30:18,623 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:30:18,625 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:30:18,625 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:30:18,628 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fd7969-72a5-4c58-8a55-b42d6f074416/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:30:18,675 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:30:18,675 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:30:18,676 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:30:18,677 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:30:18,677 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:30:18,677 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:30:18,677 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:30:18,684 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:30:18,684 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:30:18,684 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:30:18,685 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:30:18,686 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:30:18,686 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:30:18,686 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:30:18,686 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:30:18,687 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:30:18,687 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:30:18,688 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:30:18,688 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:30:18,688 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:30:18,688 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:30:18,688 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:30:18,689 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:30:18,689 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:30:18,689 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:30:18,689 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:30:18,690 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:30:18,690 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:30:18,690 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:30:18,690 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:30:18,690 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:30:18,691 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:30:18,691 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:30:18,691 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:30:18,692 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:30:18,692 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:30:18,692 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:30:18,692 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:30:18,692 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:30:18,693 INFO L138 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_d2fd7969-72a5-4c58-8a55-b42d6f074416/bin/utaipan-WLngWcDbfI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fd7969-72a5-4c58-8a55-b42d6f074416/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 01a2c96cfabf5ea27d44ac8a8fb1ac0f39d36a0a [2021-10-11 02:30:19,018 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:30:19,047 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:30:19,050 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:30:19,051 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:30:19,055 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:30:19,056 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fd7969-72a5-4c58-8a55-b42d6f074416/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/pthread-wmm/safe016_tso.oepc.i [2021-10-11 02:30:19,136 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fd7969-72a5-4c58-8a55-b42d6f074416/bin/utaipan-WLngWcDbfI/data/59db92db8/4c7f8a360f414e43a2c4cbfd26b734d1/FLAG3071f6d65 [2021-10-11 02:30:19,796 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:30:19,797 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fd7969-72a5-4c58-8a55-b42d6f074416/sv-benchmarks/c/pthread-wmm/safe016_tso.oepc.i [2021-10-11 02:30:19,819 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fd7969-72a5-4c58-8a55-b42d6f074416/bin/utaipan-WLngWcDbfI/data/59db92db8/4c7f8a360f414e43a2c4cbfd26b734d1/FLAG3071f6d65 [2021-10-11 02:30:20,023 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fd7969-72a5-4c58-8a55-b42d6f074416/bin/utaipan-WLngWcDbfI/data/59db92db8/4c7f8a360f414e43a2c4cbfd26b734d1 [2021-10-11 02:30:20,026 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:30:20,028 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:30:20,030 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:30:20,030 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:30:20,034 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:30:20,035 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:30:20" (1/1) ... [2021-10-11 02:30:20,037 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c47c1f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:20, skipping insertion in model container [2021-10-11 02:30:20,037 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:30:20" (1/1) ... [2021-10-11 02:30:20,046 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:30:20,091 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:30:20,340 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fd7969-72a5-4c58-8a55-b42d6f074416/sv-benchmarks/c/pthread-wmm/safe016_tso.oepc.i[950,963] [2021-10-11 02:30:20,559 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:30:20,569 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:30:20,584 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fd7969-72a5-4c58-8a55-b42d6f074416/sv-benchmarks/c/pthread-wmm/safe016_tso.oepc.i[950,963] [2021-10-11 02:30:20,631 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:30:20,734 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:30:20,736 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:20 WrapperNode [2021-10-11 02:30:20,736 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:30:20,738 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:30:20,738 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:30:20,738 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:30:20,746 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:20" (1/1) ... [2021-10-11 02:30:20,787 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:20" (1/1) ... [2021-10-11 02:30:20,822 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:30:20,823 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:30:20,823 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:30:20,823 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:30:20,833 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:20" (1/1) ... [2021-10-11 02:30:20,834 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:20" (1/1) ... [2021-10-11 02:30:20,837 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:20" (1/1) ... [2021-10-11 02:30:20,837 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:20" (1/1) ... [2021-10-11 02:30:20,845 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:20" (1/1) ... [2021-10-11 02:30:20,847 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:20" (1/1) ... [2021-10-11 02:30:20,850 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:20" (1/1) ... [2021-10-11 02:30:20,854 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:30:20,855 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:30:20,855 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:30:20,855 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:30:20,865 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:20" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fd7969-72a5-4c58-8a55-b42d6f074416/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:30:20,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-11 02:30:20,954 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-11 02:30:20,955 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:30:20,955 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-11 02:30:20,955 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-10-11 02:30:20,955 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-10-11 02:30:20,955 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-10-11 02:30:20,956 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-10-11 02:30:20,956 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-10-11 02:30:20,956 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-10-11 02:30:20,956 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2021-10-11 02:30:20,956 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2021-10-11 02:30:20,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:30:20,957 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-11 02:30:20,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:30:20,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:30:20,959 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-11 02:30:21,379 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:30:21,380 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-11 02:30:21,381 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:30:21 BoogieIcfgContainer [2021-10-11 02:30:21,382 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:30:21,383 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:30:21,383 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:30:21,387 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:30:21,387 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:30:20" (1/3) ... [2021-10-11 02:30:21,388 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e76f3e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:30:21, skipping insertion in model container [2021-10-11 02:30:21,388 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:20" (2/3) ... [2021-10-11 02:30:21,388 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e76f3e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:30:21, skipping insertion in model container [2021-10-11 02:30:21,388 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:30:21" (3/3) ... [2021-10-11 02:30:21,390 INFO L111 eAbstractionObserver]: Analyzing ICFG safe016_tso.oepc.i [2021-10-11 02:30:21,403 WARN L169 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-11 02:30:21,404 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:30:21,410 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:30:21,411 INFO L354 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-11 02:30:21,453 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:30:21,453 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:30:21,453 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:30:21,453 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:30:21,454 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:30:21,454 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:30:21,454 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:30:21,454 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:30:21,455 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:30:21,455 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:30:21,455 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:30:21,455 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:30:21,456 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:30:21,457 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:30:21,457 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:30:21,457 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:30:21,457 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:30:21,458 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:30:21,458 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:30:21,458 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:30:21,459 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:30:21,460 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:30:21,460 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:30:21,460 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:30:21,468 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:30:21,468 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:30:21,468 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:30:21,468 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:30:21,469 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:30:21,469 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:30:21,469 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:30:21,470 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:30:21,471 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:30:21,472 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:30:21,472 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:30:21,472 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:30:21,472 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:30:21,473 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:30:21,473 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:30:21,477 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:30:21,478 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:30:21,478 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:30:21,478 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:30:21,478 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:30:21,479 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:30:21,479 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:30:21,479 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:30:21,480 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:30:21,483 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:30:21,483 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:30:21,483 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:30:21,484 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:30:21,490 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:30:21,490 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:30:21,490 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:30:21,491 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:30:21,495 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:30:21,495 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:30:21,495 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:30:21,495 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:30:21,506 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:30:21,507 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:30:21,507 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:30:21,507 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:30:21,513 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-10-11 02:30:21,523 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-10-11 02:30:21,539 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:30:21,539 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:30:21,540 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:30:21,540 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:30:21,540 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:30:21,540 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:30:21,540 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:30:21,540 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:30:21,552 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-11 02:30:21,554 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 96 places, 85 transitions, 190 flow [2021-10-11 02:30:21,557 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 96 places, 85 transitions, 190 flow [2021-10-11 02:30:21,559 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 96 places, 85 transitions, 190 flow [2021-10-11 02:30:21,601 INFO L129 PetriNetUnfolder]: 2/81 cut-off events. [2021-10-11 02:30:21,601 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-11 02:30:21,605 INFO L84 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 81 events. 2/81 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 64 event pairs, 0 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2021-10-11 02:30:21,609 INFO L116 LiptonReduction]: Number of co-enabled transitions 1866 [2021-10-11 02:30:24,064 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 48 [2021-10-11 02:30:24,216 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 48 [2021-10-11 02:30:24,624 WARN L197 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2021-10-11 02:30:24,932 WARN L197 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2021-10-11 02:30:25,055 INFO L131 LiptonReduction]: Checked pairs total: 3411 [2021-10-11 02:30:25,056 INFO L133 LiptonReduction]: Total number of compositions: 70 [2021-10-11 02:30:25,061 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 39 places, 27 transitions, 74 flow [2021-10-11 02:30:25,117 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 850 states. [2021-10-11 02:30:25,119 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states. [2021-10-11 02:30:25,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-11 02:30:25,127 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:30:25,128 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:30:25,128 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:30:25,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:30:25,133 INFO L82 PathProgramCache]: Analyzing trace with hash -975438877, now seen corresponding path program 1 times [2021-10-11 02:30:25,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:30:25,143 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139779627] [2021-10-11 02:30:25,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:30:25,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:30:25,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:30:25,328 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139779627] [2021-10-11 02:30:25,329 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:30:25,330 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:30:25,331 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977928181] [2021-10-11 02:30:25,336 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-10-11 02:30:25,336 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:30:25,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-11 02:30:25,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 02:30:25,358 INFO L87 Difference]: Start difference. First operand 850 states. Second operand 2 states. [2021-10-11 02:30:25,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:30:25,433 INFO L93 Difference]: Finished difference Result 850 states and 2994 transitions. [2021-10-11 02:30:25,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-11 02:30:25,435 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2021-10-11 02:30:25,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:30:25,460 INFO L225 Difference]: With dead ends: 850 [2021-10-11 02:30:25,460 INFO L226 Difference]: Without dead ends: 706 [2021-10-11 02:30:25,462 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 02:30:25,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2021-10-11 02:30:25,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 706. [2021-10-11 02:30:25,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 706 states. [2021-10-11 02:30:25,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 2442 transitions. [2021-10-11 02:30:25,608 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 2442 transitions. Word has length 10 [2021-10-11 02:30:25,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:30:25,609 INFO L481 AbstractCegarLoop]: Abstraction has 706 states and 2442 transitions. [2021-10-11 02:30:25,609 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-10-11 02:30:25,609 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 2442 transitions. [2021-10-11 02:30:25,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-11 02:30:25,615 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:30:25,615 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:30:25,615 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:30:25,616 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:30:25,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:30:25,621 INFO L82 PathProgramCache]: Analyzing trace with hash -173841252, now seen corresponding path program 1 times [2021-10-11 02:30:25,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:30:25,621 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279737384] [2021-10-11 02:30:25,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:30:25,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:30:25,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:30:25,798 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279737384] [2021-10-11 02:30:25,798 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:30:25,798 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:30:25,798 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591545905] [2021-10-11 02:30:25,799 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:30:25,800 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:30:25,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:30:25,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:30:25,801 INFO L87 Difference]: Start difference. First operand 706 states and 2442 transitions. Second operand 4 states. [2021-10-11 02:30:25,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:30:25,880 INFO L93 Difference]: Finished difference Result 1412 states and 4631 transitions. [2021-10-11 02:30:25,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:30:25,881 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2021-10-11 02:30:25,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:30:25,893 INFO L225 Difference]: With dead ends: 1412 [2021-10-11 02:30:25,895 INFO L226 Difference]: Without dead ends: 1104 [2021-10-11 02:30:25,896 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:30:25,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1104 states. [2021-10-11 02:30:25,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1104 to 904. [2021-10-11 02:30:25,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 904 states. [2021-10-11 02:30:25,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 3004 transitions. [2021-10-11 02:30:25,957 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 3004 transitions. Word has length 11 [2021-10-11 02:30:25,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:30:25,957 INFO L481 AbstractCegarLoop]: Abstraction has 904 states and 3004 transitions. [2021-10-11 02:30:25,957 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:30:25,958 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 3004 transitions. [2021-10-11 02:30:25,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-11 02:30:25,964 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:30:25,964 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:30:25,964 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:30:25,965 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:30:25,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:30:25,965 INFO L82 PathProgramCache]: Analyzing trace with hash -892982348, now seen corresponding path program 1 times [2021-10-11 02:30:25,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:30:25,966 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830945837] [2021-10-11 02:30:25,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:30:26,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:30:26,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:30:26,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830945837] [2021-10-11 02:30:26,151 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:30:26,151 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:30:26,151 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282407963] [2021-10-11 02:30:26,152 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:30:26,152 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:30:26,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:30:26,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:30:26,153 INFO L87 Difference]: Start difference. First operand 904 states and 3004 transitions. Second operand 5 states. [2021-10-11 02:30:26,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:30:26,263 INFO L93 Difference]: Finished difference Result 1245 states and 3917 transitions. [2021-10-11 02:30:26,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 02:30:26,263 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2021-10-11 02:30:26,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:30:26,273 INFO L225 Difference]: With dead ends: 1245 [2021-10-11 02:30:26,274 INFO L226 Difference]: Without dead ends: 1014 [2021-10-11 02:30:26,274 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:30:26,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1014 states. [2021-10-11 02:30:26,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1014 to 806. [2021-10-11 02:30:26,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 806 states. [2021-10-11 02:30:26,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 2638 transitions. [2021-10-11 02:30:26,343 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 2638 transitions. Word has length 12 [2021-10-11 02:30:26,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:30:26,343 INFO L481 AbstractCegarLoop]: Abstraction has 806 states and 2638 transitions. [2021-10-11 02:30:26,343 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:30:26,344 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 2638 transitions. [2021-10-11 02:30:26,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-11 02:30:26,345 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:30:26,346 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:30:26,348 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 02:30:26,349 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:30:26,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:30:26,350 INFO L82 PathProgramCache]: Analyzing trace with hash -1094137873, now seen corresponding path program 1 times [2021-10-11 02:30:26,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:30:26,351 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993567112] [2021-10-11 02:30:26,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:30:26,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:30:26,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:30:26,479 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993567112] [2021-10-11 02:30:26,479 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:30:26,479 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:30:26,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061689362] [2021-10-11 02:30:26,485 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:30:26,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:30:26,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:30:26,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:30:26,488 INFO L87 Difference]: Start difference. First operand 806 states and 2638 transitions. Second operand 5 states. [2021-10-11 02:30:26,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:30:26,580 INFO L93 Difference]: Finished difference Result 1094 states and 3416 transitions. [2021-10-11 02:30:26,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 02:30:26,581 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2021-10-11 02:30:26,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:30:26,590 INFO L225 Difference]: With dead ends: 1094 [2021-10-11 02:30:26,591 INFO L226 Difference]: Without dead ends: 934 [2021-10-11 02:30:26,591 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:30:26,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 934 states. [2021-10-11 02:30:26,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 934 to 710. [2021-10-11 02:30:26,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 710 states. [2021-10-11 02:30:26,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 710 states to 710 states and 2290 transitions. [2021-10-11 02:30:26,627 INFO L78 Accepts]: Start accepts. Automaton has 710 states and 2290 transitions. Word has length 12 [2021-10-11 02:30:26,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:30:26,627 INFO L481 AbstractCegarLoop]: Abstraction has 710 states and 2290 transitions. [2021-10-11 02:30:26,628 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:30:26,628 INFO L276 IsEmpty]: Start isEmpty. Operand 710 states and 2290 transitions. [2021-10-11 02:30:26,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-11 02:30:26,629 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:30:26,629 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:30:26,630 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 02:30:26,630 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:30:26,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:30:26,630 INFO L82 PathProgramCache]: Analyzing trace with hash -1912675369, now seen corresponding path program 1 times [2021-10-11 02:30:26,630 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:30:26,631 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554778007] [2021-10-11 02:30:26,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:30:26,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:30:26,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:30:26,692 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554778007] [2021-10-11 02:30:26,692 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:30:26,692 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:30:26,692 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817728720] [2021-10-11 02:30:26,692 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:30:26,693 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:30:26,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:30:26,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:30:26,694 INFO L87 Difference]: Start difference. First operand 710 states and 2290 transitions. Second operand 5 states. [2021-10-11 02:30:26,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:30:26,778 INFO L93 Difference]: Finished difference Result 1024 states and 3137 transitions. [2021-10-11 02:30:26,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 02:30:26,778 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2021-10-11 02:30:26,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:30:26,791 INFO L225 Difference]: With dead ends: 1024 [2021-10-11 02:30:26,791 INFO L226 Difference]: Without dead ends: 874 [2021-10-11 02:30:26,791 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:30:26,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 874 states. [2021-10-11 02:30:26,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 874 to 666. [2021-10-11 02:30:26,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 666 states. [2021-10-11 02:30:26,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 2118 transitions. [2021-10-11 02:30:26,824 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 2118 transitions. Word has length 13 [2021-10-11 02:30:26,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:30:26,824 INFO L481 AbstractCegarLoop]: Abstraction has 666 states and 2118 transitions. [2021-10-11 02:30:26,824 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:30:26,825 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 2118 transitions. [2021-10-11 02:30:26,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-11 02:30:26,826 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:30:26,826 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:30:26,827 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-11 02:30:26,827 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:30:26,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:30:26,827 INFO L82 PathProgramCache]: Analyzing trace with hash -1163214657, now seen corresponding path program 1 times [2021-10-11 02:30:26,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:30:26,828 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692955193] [2021-10-11 02:30:26,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:30:26,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:30:26,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:30:26,889 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692955193] [2021-10-11 02:30:26,889 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:30:26,889 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:30:26,890 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203911606] [2021-10-11 02:30:26,890 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:30:26,890 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:30:26,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:30:26,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:30:26,891 INFO L87 Difference]: Start difference. First operand 666 states and 2118 transitions. Second operand 5 states. [2021-10-11 02:30:26,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:30:26,977 INFO L93 Difference]: Finished difference Result 1050 states and 3172 transitions. [2021-10-11 02:30:26,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 02:30:26,978 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2021-10-11 02:30:26,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:30:26,985 INFO L225 Difference]: With dead ends: 1050 [2021-10-11 02:30:26,986 INFO L226 Difference]: Without dead ends: 802 [2021-10-11 02:30:26,987 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:30:26,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 802 states. [2021-10-11 02:30:27,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 802 to 586. [2021-10-11 02:30:27,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 586 states. [2021-10-11 02:30:27,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 1786 transitions. [2021-10-11 02:30:27,035 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 1786 transitions. Word has length 14 [2021-10-11 02:30:27,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:30:27,035 INFO L481 AbstractCegarLoop]: Abstraction has 586 states and 1786 transitions. [2021-10-11 02:30:27,036 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:30:27,036 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 1786 transitions. [2021-10-11 02:30:27,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-11 02:30:27,038 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:30:27,038 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:30:27,038 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-11 02:30:27,038 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:30:27,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:30:27,039 INFO L82 PathProgramCache]: Analyzing trace with hash -2014475768, now seen corresponding path program 1 times [2021-10-11 02:30:27,039 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:30:27,040 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589591065] [2021-10-11 02:30:27,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:30:27,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:30:27,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:30:27,140 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589591065] [2021-10-11 02:30:27,140 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:30:27,140 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:30:27,142 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3275412] [2021-10-11 02:30:27,146 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 02:30:27,147 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:30:27,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 02:30:27,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:30:27,149 INFO L87 Difference]: Start difference. First operand 586 states and 1786 transitions. Second operand 6 states. [2021-10-11 02:30:27,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:30:27,216 INFO L93 Difference]: Finished difference Result 990 states and 2964 transitions. [2021-10-11 02:30:27,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 02:30:27,216 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2021-10-11 02:30:27,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:30:27,222 INFO L225 Difference]: With dead ends: 990 [2021-10-11 02:30:27,222 INFO L226 Difference]: Without dead ends: 570 [2021-10-11 02:30:27,222 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-10-11 02:30:27,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2021-10-11 02:30:27,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 442. [2021-10-11 02:30:27,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 442 states. [2021-10-11 02:30:27,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 1340 transitions. [2021-10-11 02:30:27,243 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 1340 transitions. Word has length 14 [2021-10-11 02:30:27,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:30:27,243 INFO L481 AbstractCegarLoop]: Abstraction has 442 states and 1340 transitions. [2021-10-11 02:30:27,243 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 02:30:27,243 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 1340 transitions. [2021-10-11 02:30:27,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-11 02:30:27,245 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:30:27,245 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:30:27,245 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-11 02:30:27,245 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:30:27,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:30:27,246 INFO L82 PathProgramCache]: Analyzing trace with hash -1683713572, now seen corresponding path program 2 times [2021-10-11 02:30:27,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:30:27,246 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817978692] [2021-10-11 02:30:27,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:30:27,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:30:27,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:30:27,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817978692] [2021-10-11 02:30:27,340 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:30:27,340 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:30:27,340 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158001405] [2021-10-11 02:30:27,341 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:30:27,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:30:27,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:30:27,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:30:27,342 INFO L87 Difference]: Start difference. First operand 442 states and 1340 transitions. Second operand 5 states. [2021-10-11 02:30:27,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:30:27,402 INFO L93 Difference]: Finished difference Result 626 states and 1856 transitions. [2021-10-11 02:30:27,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 02:30:27,402 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2021-10-11 02:30:27,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:30:27,408 INFO L225 Difference]: With dead ends: 626 [2021-10-11 02:30:27,408 INFO L226 Difference]: Without dead ends: 570 [2021-10-11 02:30:27,409 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:30:27,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2021-10-11 02:30:27,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 418. [2021-10-11 02:30:27,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 418 states. [2021-10-11 02:30:27,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 1252 transitions. [2021-10-11 02:30:27,427 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 1252 transitions. Word has length 14 [2021-10-11 02:30:27,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:30:27,428 INFO L481 AbstractCegarLoop]: Abstraction has 418 states and 1252 transitions. [2021-10-11 02:30:27,428 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:30:27,428 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 1252 transitions. [2021-10-11 02:30:27,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-11 02:30:27,429 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:30:27,430 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:30:27,430 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-11 02:30:27,430 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:30:27,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:30:27,431 INFO L82 PathProgramCache]: Analyzing trace with hash -672340700, now seen corresponding path program 1 times [2021-10-11 02:30:27,431 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:30:27,435 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571112968] [2021-10-11 02:30:27,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:30:27,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:30:27,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:30:27,517 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571112968] [2021-10-11 02:30:27,517 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:30:27,518 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:30:27,518 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796859104] [2021-10-11 02:30:27,519 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:30:27,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:30:27,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:30:27,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:30:27,520 INFO L87 Difference]: Start difference. First operand 418 states and 1252 transitions. Second operand 5 states. [2021-10-11 02:30:27,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:30:27,582 INFO L93 Difference]: Finished difference Result 686 states and 1964 transitions. [2021-10-11 02:30:27,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 02:30:27,583 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2021-10-11 02:30:27,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:30:27,587 INFO L225 Difference]: With dead ends: 686 [2021-10-11 02:30:27,587 INFO L226 Difference]: Without dead ends: 514 [2021-10-11 02:30:27,588 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:30:27,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2021-10-11 02:30:27,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 394. [2021-10-11 02:30:27,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 394 states. [2021-10-11 02:30:27,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 1140 transitions. [2021-10-11 02:30:27,605 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 1140 transitions. Word has length 15 [2021-10-11 02:30:27,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:30:27,606 INFO L481 AbstractCegarLoop]: Abstraction has 394 states and 1140 transitions. [2021-10-11 02:30:27,606 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:30:27,606 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 1140 transitions. [2021-10-11 02:30:27,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-11 02:30:27,607 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:30:27,607 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:30:27,608 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-11 02:30:27,608 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:30:27,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:30:27,610 INFO L82 PathProgramCache]: Analyzing trace with hash -671268224, now seen corresponding path program 1 times [2021-10-11 02:30:27,610 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:30:27,610 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144262741] [2021-10-11 02:30:27,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:30:27,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:30:27,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:30:27,662 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144262741] [2021-10-11 02:30:27,663 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:30:27,663 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:30:27,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651296415] [2021-10-11 02:30:27,663 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:30:27,664 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:30:27,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:30:27,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:30:27,664 INFO L87 Difference]: Start difference. First operand 394 states and 1140 transitions. Second operand 3 states. [2021-10-11 02:30:27,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:30:27,677 INFO L93 Difference]: Finished difference Result 358 states and 974 transitions. [2021-10-11 02:30:27,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:30:27,678 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2021-10-11 02:30:27,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:30:27,681 INFO L225 Difference]: With dead ends: 358 [2021-10-11 02:30:27,681 INFO L226 Difference]: Without dead ends: 358 [2021-10-11 02:30:27,682 INFO L677 BasicCegarLoop]: 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 [2021-10-11 02:30:27,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2021-10-11 02:30:27,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 358. [2021-10-11 02:30:27,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 358 states. [2021-10-11 02:30:27,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 974 transitions. [2021-10-11 02:30:27,695 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 974 transitions. Word has length 15 [2021-10-11 02:30:27,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:30:27,696 INFO L481 AbstractCegarLoop]: Abstraction has 358 states and 974 transitions. [2021-10-11 02:30:27,696 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:30:27,696 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 974 transitions. [2021-10-11 02:30:27,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-11 02:30:27,697 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:30:27,697 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:30:27,697 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-11 02:30:27,698 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:30:27,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:30:27,698 INFO L82 PathProgramCache]: Analyzing trace with hash 1195890947, now seen corresponding path program 1 times [2021-10-11 02:30:27,698 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:30:27,699 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896521678] [2021-10-11 02:30:27,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:30:27,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:30:27,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:30:27,754 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896521678] [2021-10-11 02:30:27,754 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:30:27,755 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:30:27,755 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638284715] [2021-10-11 02:30:27,755 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:30:27,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:30:27,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:30:27,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:30:27,756 INFO L87 Difference]: Start difference. First operand 358 states and 974 transitions. Second operand 4 states. [2021-10-11 02:30:27,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:30:27,780 INFO L93 Difference]: Finished difference Result 282 states and 692 transitions. [2021-10-11 02:30:27,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:30:27,781 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2021-10-11 02:30:27,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:30:27,785 INFO L225 Difference]: With dead ends: 282 [2021-10-11 02:30:27,785 INFO L226 Difference]: Without dead ends: 282 [2021-10-11 02:30:27,786 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:30:27,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2021-10-11 02:30:27,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 282. [2021-10-11 02:30:27,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 282 states. [2021-10-11 02:30:27,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 692 transitions. [2021-10-11 02:30:27,797 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 692 transitions. Word has length 16 [2021-10-11 02:30:27,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:30:27,797 INFO L481 AbstractCegarLoop]: Abstraction has 282 states and 692 transitions. [2021-10-11 02:30:27,797 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:30:27,797 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 692 transitions. [2021-10-11 02:30:27,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-11 02:30:27,798 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:30:27,798 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:30:27,799 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-11 02:30:27,799 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:30:27,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:30:27,802 INFO L82 PathProgramCache]: Analyzing trace with hash 852842, now seen corresponding path program 1 times [2021-10-11 02:30:27,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:30:27,802 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151832270] [2021-10-11 02:30:27,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:30:27,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:30:27,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:30:27,869 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151832270] [2021-10-11 02:30:27,869 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:30:27,869 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:30:27,869 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142696599] [2021-10-11 02:30:27,869 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:30:27,870 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:30:27,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:30:27,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:30:27,871 INFO L87 Difference]: Start difference. First operand 282 states and 692 transitions. Second operand 5 states. [2021-10-11 02:30:27,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:30:27,910 INFO L93 Difference]: Finished difference Result 221 states and 521 transitions. [2021-10-11 02:30:27,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:30:27,911 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2021-10-11 02:30:27,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:30:27,913 INFO L225 Difference]: With dead ends: 221 [2021-10-11 02:30:27,914 INFO L226 Difference]: Without dead ends: 205 [2021-10-11 02:30:27,914 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:30:27,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2021-10-11 02:30:27,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2021-10-11 02:30:27,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2021-10-11 02:30:27,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 477 transitions. [2021-10-11 02:30:27,922 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 477 transitions. Word has length 17 [2021-10-11 02:30:27,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:30:27,922 INFO L481 AbstractCegarLoop]: Abstraction has 205 states and 477 transitions. [2021-10-11 02:30:27,922 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:30:27,922 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 477 transitions. [2021-10-11 02:30:27,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-11 02:30:27,923 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:30:27,923 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:30:27,924 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-11 02:30:27,924 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:30:27,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:30:27,924 INFO L82 PathProgramCache]: Analyzing trace with hash 2041241983, now seen corresponding path program 1 times [2021-10-11 02:30:27,925 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:30:27,925 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036298233] [2021-10-11 02:30:27,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:30:27,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:30:27,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:30:27,982 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036298233] [2021-10-11 02:30:27,982 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:30:27,982 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:30:27,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026690939] [2021-10-11 02:30:27,983 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:30:27,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:30:27,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:30:27,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:30:27,989 INFO L87 Difference]: Start difference. First operand 205 states and 477 transitions. Second operand 5 states. [2021-10-11 02:30:28,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:30:28,030 INFO L93 Difference]: Finished difference Result 258 states and 580 transitions. [2021-10-11 02:30:28,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 02:30:28,031 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2021-10-11 02:30:28,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:30:28,032 INFO L225 Difference]: With dead ends: 258 [2021-10-11 02:30:28,032 INFO L226 Difference]: Without dead ends: 154 [2021-10-11 02:30:28,033 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:30:28,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2021-10-11 02:30:28,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 150. [2021-10-11 02:30:28,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2021-10-11 02:30:28,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 316 transitions. [2021-10-11 02:30:28,039 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 316 transitions. Word has length 19 [2021-10-11 02:30:28,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:30:28,039 INFO L481 AbstractCegarLoop]: Abstraction has 150 states and 316 transitions. [2021-10-11 02:30:28,039 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:30:28,039 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 316 transitions. [2021-10-11 02:30:28,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-11 02:30:28,040 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:30:28,040 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:30:28,041 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-11 02:30:28,041 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:30:28,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:30:28,041 INFO L82 PathProgramCache]: Analyzing trace with hash 1152877885, now seen corresponding path program 2 times [2021-10-11 02:30:28,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:30:28,042 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617930937] [2021-10-11 02:30:28,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:30:28,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:30:28,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:30:28,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617930937] [2021-10-11 02:30:28,137 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:30:28,137 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-11 02:30:28,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596448873] [2021-10-11 02:30:28,138 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 02:30:28,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:30:28,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 02:30:28,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:30:28,139 INFO L87 Difference]: Start difference. First operand 150 states and 316 transitions. Second operand 6 states. [2021-10-11 02:30:28,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:30:28,180 INFO L93 Difference]: Finished difference Result 129 states and 276 transitions. [2021-10-11 02:30:28,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 02:30:28,181 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2021-10-11 02:30:28,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:30:28,182 INFO L225 Difference]: With dead ends: 129 [2021-10-11 02:30:28,182 INFO L226 Difference]: Without dead ends: 53 [2021-10-11 02:30:28,183 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:30:28,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-10-11 02:30:28,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2021-10-11 02:30:28,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2021-10-11 02:30:28,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 96 transitions. [2021-10-11 02:30:28,186 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 96 transitions. Word has length 19 [2021-10-11 02:30:28,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:30:28,186 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 96 transitions. [2021-10-11 02:30:28,186 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 02:30:28,186 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 96 transitions. [2021-10-11 02:30:28,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-11 02:30:28,187 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:30:28,187 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:30:28,187 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-10-11 02:30:28,187 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:30:28,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:30:28,188 INFO L82 PathProgramCache]: Analyzing trace with hash 1281872009, now seen corresponding path program 1 times [2021-10-11 02:30:28,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:30:28,188 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788961672] [2021-10-11 02:30:28,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:30:28,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:30:28,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:30:28,262 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788961672] [2021-10-11 02:30:28,262 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:30:28,262 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:30:28,263 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118347778] [2021-10-11 02:30:28,263 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 02:30:28,263 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:30:28,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 02:30:28,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:30:28,264 INFO L87 Difference]: Start difference. First operand 53 states and 96 transitions. Second operand 6 states. [2021-10-11 02:30:28,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:30:28,298 INFO L93 Difference]: Finished difference Result 52 states and 95 transitions. [2021-10-11 02:30:28,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:30:28,298 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2021-10-11 02:30:28,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:30:28,299 INFO L225 Difference]: With dead ends: 52 [2021-10-11 02:30:28,299 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:30:28,301 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-10-11 02:30:28,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:30:28,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:30:28,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:30:28,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:30:28,302 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2021-10-11 02:30:28,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:30:28,302 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:30:28,302 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 02:30:28,302 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:30:28,302 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:30:28,303 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-10-11 02:30:28,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:30:28 BasicIcfg [2021-10-11 02:30:28,306 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:30:28,307 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:30:28,307 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:30:28,307 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:30:28,308 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:30:21" (3/4) ... [2021-10-11 02:30:28,311 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:30:28,318 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-10-11 02:30:28,318 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-10-11 02:30:28,318 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2021-10-11 02:30:28,318 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2021-10-11 02:30:28,325 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2021-10-11 02:30:28,325 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-11 02:30:28,325 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:30:28,326 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:30:28,370 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fd7969-72a5-4c58-8a55-b42d6f074416/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:30:28,371 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:30:28,372 INFO L168 Benchmark]: Toolchain (without parser) took 8343.66 ms. Allocated memory was 100.7 MB in the beginning and 176.2 MB in the end (delta: 75.5 MB). Free memory was 66.3 MB in the beginning and 66.6 MB in the end (delta: -246.2 kB). Peak memory consumption was 75.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:30:28,372 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 100.7 MB. Free memory was 56.0 MB in the beginning and 55.9 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:30:28,373 INFO L168 Benchmark]: CACSL2BoogieTranslator took 706.97 ms. Allocated memory is still 100.7 MB. Free memory was 66.3 MB in the beginning and 55.4 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:30:28,373 INFO L168 Benchmark]: Boogie Procedure Inliner took 84.56 ms. Allocated memory is still 100.7 MB. Free memory was 55.4 MB in the beginning and 53.6 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:30:28,373 INFO L168 Benchmark]: Boogie Preprocessor took 31.41 ms. Allocated memory is still 100.7 MB. Free memory was 53.3 MB in the beginning and 52.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:30:28,374 INFO L168 Benchmark]: RCFGBuilder took 526.83 ms. Allocated memory is still 100.7 MB. Free memory was 52.0 MB in the beginning and 66.2 MB in the end (delta: -14.2 MB). Peak memory consumption was 16.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:30:28,374 INFO L168 Benchmark]: TraceAbstraction took 6923.21 ms. Allocated memory was 100.7 MB in the beginning and 176.2 MB in the end (delta: 75.5 MB). Free memory was 65.9 MB in the beginning and 68.7 MB in the end (delta: -2.7 MB). Peak memory consumption was 73.8 MB. Max. memory is 16.1 GB. [2021-10-11 02:30:28,375 INFO L168 Benchmark]: Witness Printer took 63.86 ms. Allocated memory is still 176.2 MB. Free memory was 68.7 MB in the beginning and 66.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:30:28,377 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 100.7 MB. Free memory was 56.0 MB in the beginning and 55.9 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 706.97 ms. Allocated memory is still 100.7 MB. Free memory was 66.3 MB in the beginning and 55.4 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 84.56 ms. Allocated memory is still 100.7 MB. Free memory was 55.4 MB in the beginning and 53.6 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 31.41 ms. Allocated memory is still 100.7 MB. Free memory was 53.3 MB in the beginning and 52.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 526.83 ms. Allocated memory is still 100.7 MB. Free memory was 52.0 MB in the beginning and 66.2 MB in the end (delta: -14.2 MB). Peak memory consumption was 16.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6923.21 ms. Allocated memory was 100.7 MB in the beginning and 176.2 MB in the end (delta: 75.5 MB). Free memory was 65.9 MB in the beginning and 68.7 MB in the end (delta: -2.7 MB). Peak memory consumption was 73.8 MB. Max. memory is 16.1 GB. * Witness Printer took 63.86 ms. Allocated memory is still 176.2 MB. Free memory was 68.7 MB in the beginning and 66.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1211 VarBasedMoverChecksPositive, 49 VarBasedMoverChecksNegative, 10 SemBasedMoverChecksPositive, 39 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 114 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.4s, 96 PlacesBefore, 39 PlacesAfterwards, 85 TransitionsBefore, 27 TransitionsAfterwards, 1866 CoEnabledTransitionPairs, 5 FixpointIterations, 17 TrivialSequentialCompositions, 45 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 1 ChoiceCompositions, 70 TotalNumberOfCompositions, 3411 MoverChecksTotal - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 84 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.7s, OverallIterations: 15, TraceHistogramMax: 1, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.5s, HoareTripleCheckerStatistics: 411 SDtfs, 461 SDslu, 715 SDs, 0 SdLazy, 276 SolverSat, 62 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 71 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=904occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 15 MinimizatonAttempts, 1460 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 222 NumberOfCodeBlocks, 222 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 207 ConstructedInterpolants, 0 QuantifiedInterpolants, 13381 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 15 InterpolantComputations, 15 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 proved your program to be correct! Received shutdown request...