./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/thin000_pso.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 997cd7c3 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-wmm/thin000_pso.oepc.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4d03eab5d7eb3076e43fdbc822f0c202dd7957a2 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-997cd7c-m [2021-09-22 14:53:16,460 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-09-22 14:53:16,462 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-09-22 14:53:16,502 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-09-22 14:53:16,502 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-09-22 14:53:16,506 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-09-22 14:53:16,507 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-09-22 14:53:16,512 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-09-22 14:53:16,515 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-09-22 14:53:16,519 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-09-22 14:53:16,520 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-09-22 14:53:16,524 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-09-22 14:53:16,524 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-09-22 14:53:16,526 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-09-22 14:53:16,528 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-09-22 14:53:16,531 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-09-22 14:53:16,532 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-09-22 14:53:16,535 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-09-22 14:53:16,538 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-09-22 14:53:16,543 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-09-22 14:53:16,544 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-09-22 14:53:16,545 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-09-22 14:53:16,547 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-09-22 14:53:16,548 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-09-22 14:53:16,554 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-09-22 14:53:16,554 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-09-22 14:53:16,555 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-09-22 14:53:16,562 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-09-22 14:53:16,562 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-09-22 14:53:16,563 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-09-22 14:53:16,563 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-09-22 14:53:16,564 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-09-22 14:53:16,569 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-09-22 14:53:16,570 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-09-22 14:53:16,571 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-09-22 14:53:16,572 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-09-22 14:53:16,572 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-09-22 14:53:16,573 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-09-22 14:53:16,573 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-09-22 14:53:16,574 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-09-22 14:53:16,575 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-09-22 14:53:16,579 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-09-22 14:53:16,614 INFO L113 SettingsManager]: Loading preferences was successful [2021-09-22 14:53:16,615 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-09-22 14:53:16,616 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-09-22 14:53:16,616 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-09-22 14:53:16,618 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-09-22 14:53:16,618 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-09-22 14:53:16,618 INFO L138 SettingsManager]: * Use SBE=true [2021-09-22 14:53:16,619 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-09-22 14:53:16,619 INFO L138 SettingsManager]: * sizeof long=4 [2021-09-22 14:53:16,619 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-09-22 14:53:16,620 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-09-22 14:53:16,620 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-09-22 14:53:16,620 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-09-22 14:53:16,621 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-09-22 14:53:16,621 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-09-22 14:53:16,621 INFO L138 SettingsManager]: * sizeof long double=12 [2021-09-22 14:53:16,621 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-09-22 14:53:16,621 INFO L138 SettingsManager]: * Use constant arrays=true [2021-09-22 14:53:16,622 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-09-22 14:53:16,622 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-09-22 14:53:16,622 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-09-22 14:53:16,622 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-09-22 14:53:16,622 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-09-22 14:53:16,623 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-09-22 14:53:16,623 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-09-22 14:53:16,623 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-09-22 14:53:16,623 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-09-22 14:53:16,623 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-09-22 14:53:16,624 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-09-22 14:53:16,624 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-09-22 14:53:16,624 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4d03eab5d7eb3076e43fdbc822f0c202dd7957a2 [2021-09-22 14:53:16,924 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-09-22 14:53:16,941 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-09-22 14:53:16,944 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-09-22 14:53:16,945 INFO L271 PluginConnector]: Initializing CDTParser... [2021-09-22 14:53:16,946 INFO L275 PluginConnector]: CDTParser initialized [2021-09-22 14:53:16,947 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/thin000_pso.oepc.i [2021-09-22 14:53:17,021 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e49de7a9/2b80bcb9c3304406af4ca51a2078f0d3/FLAGfd5fed560 [2021-09-22 14:53:17,561 INFO L306 CDTParser]: Found 1 translation units. [2021-09-22 14:53:17,562 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/thin000_pso.oepc.i [2021-09-22 14:53:17,578 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e49de7a9/2b80bcb9c3304406af4ca51a2078f0d3/FLAGfd5fed560 [2021-09-22 14:53:18,028 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e49de7a9/2b80bcb9c3304406af4ca51a2078f0d3 [2021-09-22 14:53:18,031 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-09-22 14:53:18,032 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-09-22 14:53:18,033 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-09-22 14:53:18,033 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-09-22 14:53:18,039 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-09-22 14:53:18,040 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.09 02:53:18" (1/1) ... [2021-09-22 14:53:18,041 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fe8db44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:53:18, skipping insertion in model container [2021-09-22 14:53:18,041 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.09 02:53:18" (1/1) ... [2021-09-22 14:53:18,046 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-09-22 14:53:18,091 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-09-22 14:53:18,239 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/thin000_pso.oepc.i[950,963] [2021-09-22 14:53:18,341 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-09-22 14:53:18,347 INFO L203 MainTranslator]: Completed pre-run [2021-09-22 14:53:18,357 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/thin000_pso.oepc.i[950,963] [2021-09-22 14:53:18,387 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-09-22 14:53:18,414 INFO L208 MainTranslator]: Completed translation [2021-09-22 14:53:18,415 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:53:18 WrapperNode [2021-09-22 14:53:18,415 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-09-22 14:53:18,416 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-09-22 14:53:18,416 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-09-22 14:53:18,416 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-09-22 14:53:18,422 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:53:18" (1/1) ... [2021-09-22 14:53:18,433 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:53:18" (1/1) ... [2021-09-22 14:53:18,450 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-09-22 14:53:18,450 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-09-22 14:53:18,451 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-09-22 14:53:18,451 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-09-22 14:53:18,457 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:53:18" (1/1) ... [2021-09-22 14:53:18,457 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:53:18" (1/1) ... [2021-09-22 14:53:18,459 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:53:18" (1/1) ... [2021-09-22 14:53:18,460 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:53:18" (1/1) ... [2021-09-22 14:53:18,464 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:53:18" (1/1) ... [2021-09-22 14:53:18,465 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:53:18" (1/1) ... [2021-09-22 14:53:18,466 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:53:18" (1/1) ... [2021-09-22 14:53:18,468 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-09-22 14:53:18,469 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-09-22 14:53:18,469 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-09-22 14:53:18,469 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-09-22 14:53:18,470 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:53:18" (1/1) ... [2021-09-22 14:53:18,475 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-09-22 14:53:18,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-09-22 14:53:18,506 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-09-22 14:53:18,529 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-09-22 14:53:18,556 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-09-22 14:53:18,556 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-09-22 14:53:18,557 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-09-22 14:53:18,557 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-09-22 14:53:18,557 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-09-22 14:53:18,557 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-09-22 14:53:18,558 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-09-22 14:53:18,558 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-09-22 14:53:18,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-09-22 14:53:18,558 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-09-22 14:53:18,558 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-09-22 14:53:18,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-09-22 14:53:18,560 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-09-22 14:53:18,807 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-09-22 14:53:18,808 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-09-22 14:53:18,810 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.09 02:53:18 BoogieIcfgContainer [2021-09-22 14:53:18,810 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-09-22 14:53:18,811 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-09-22 14:53:18,812 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-09-22 14:53:18,814 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-09-22 14:53:18,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.09 02:53:18" (1/3) ... [2021-09-22 14:53:18,815 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@130381d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.09 02:53:18, skipping insertion in model container [2021-09-22 14:53:18,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.09 02:53:18" (2/3) ... [2021-09-22 14:53:18,816 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@130381d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.09 02:53:18, skipping insertion in model container [2021-09-22 14:53:18,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.09 02:53:18" (3/3) ... [2021-09-22 14:53:18,817 INFO L111 eAbstractionObserver]: Analyzing ICFG thin000_pso.oepc.i [2021-09-22 14:53:18,838 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-09-22 14:53:18,845 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-09-22 14:53:18,846 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-09-22 14:53:18,846 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-09-22 14:53:18,892 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:53:18,892 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:53:18,892 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:53:18,893 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:53:18,893 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:53:18,894 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:53:18,895 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:53:18,895 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:53:18,896 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:53:18,897 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:53:18,897 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:53:18,897 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:53:18,898 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:53:18,898 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:53:18,898 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:53:18,898 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:53:18,899 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:53:18,899 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:53:18,899 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:53:18,899 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:53:18,900 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:53:18,901 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:53:18,901 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:53:18,901 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:53:18,904 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:53:18,905 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:53:18,905 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:53:18,906 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:53:18,915 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:53:18,915 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:53:18,916 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:53:18,916 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-09-22 14:53:18,926 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-09-22 14:53:18,971 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-09-22 14:53:18,982 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-09-22 14:53:18,982 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-09-22 14:53:19,006 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-09-22 14:53:19,017 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 72 places, 67 transitions, 144 flow [2021-09-22 14:53:19,020 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 72 places, 67 transitions, 144 flow [2021-09-22 14:53:19,021 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 72 places, 67 transitions, 144 flow [2021-09-22 14:53:19,080 INFO L129 PetriNetUnfolder]: 2/65 cut-off events. [2021-09-22 14:53:19,080 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-09-22 14:53:19,084 INFO L84 FinitePrefix]: Finished finitePrefix Result has 72 conditions, 65 events. 2/65 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 36 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2021-09-22 14:53:19,087 INFO L116 LiptonReduction]: Number of co-enabled transitions 756 [2021-09-22 14:53:21,211 INFO L131 LiptonReduction]: Checked pairs total: 1496 [2021-09-22 14:53:21,212 INFO L133 LiptonReduction]: Total number of compositions: 62 [2021-09-22 14:53:21,219 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 22 places, 15 transitions, 40 flow [2021-09-22 14:53:21,229 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 58 states, 57 states have (on average 2.1052631578947367) internal successors, (120), 57 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-09-22 14:53:21,231 INFO L276 IsEmpty]: Start isEmpty. Operand has 58 states, 57 states have (on average 2.1052631578947367) internal successors, (120), 57 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-09-22 14:53:21,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-09-22 14:53:21,236 INFO L504 BasicCegarLoop]: Found error trace [2021-09-22 14:53:21,236 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-09-22 14:53:21,237 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-09-22 14:53:21,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-09-22 14:53:21,240 INFO L82 PathProgramCache]: Analyzing trace with hash -1311866131, now seen corresponding path program 1 times [2021-09-22 14:53:21,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-09-22 14:53:21,246 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875328822] [2021-09-22 14:53:21,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-09-22 14:53:21,247 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-09-22 14:53:21,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-09-22 14:53:21,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:53:21,479 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-09-22 14:53:21,479 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875328822] [2021-09-22 14:53:21,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875328822] provided 1 perfect and 0 imperfect interpolant sequences [2021-09-22 14:53:21,480 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-09-22 14:53:21,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-09-22 14:53:21,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793919016] [2021-09-22 14:53:21,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-09-22 14:53:21,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-09-22 14:53:21,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-09-22 14:53:21,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-09-22 14:53:21,510 INFO L87 Difference]: Start difference. First operand has 58 states, 57 states have (on average 2.1052631578947367) internal successors, (120), 57 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-09-22 14:53:21,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-09-22 14:53:21,527 INFO L93 Difference]: Finished difference Result 57 states and 117 transitions. [2021-09-22 14:53:21,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-09-22 14:53:21,529 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-09-22 14:53:21,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-09-22 14:53:21,535 INFO L225 Difference]: With dead ends: 57 [2021-09-22 14:53:21,536 INFO L226 Difference]: Without dead ends: 57 [2021-09-22 14:53:21,537 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-09-22 14:53:21,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-09-22 14:53:21,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2021-09-22 14:53:21,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 2.0892857142857144) internal successors, (117), 56 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-09-22 14:53:21,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 117 transitions. [2021-09-22 14:53:21,566 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 117 transitions. Word has length 6 [2021-09-22 14:53:21,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-09-22 14:53:21,566 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 117 transitions. [2021-09-22 14:53:21,566 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-09-22 14:53:21,567 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 117 transitions. [2021-09-22 14:53:21,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-09-22 14:53:21,567 INFO L504 BasicCegarLoop]: Found error trace [2021-09-22 14:53:21,567 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-09-22 14:53:21,568 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-09-22 14:53:21,568 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-09-22 14:53:21,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-09-22 14:53:21,569 INFO L82 PathProgramCache]: Analyzing trace with hash -2031139743, now seen corresponding path program 1 times [2021-09-22 14:53:21,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-09-22 14:53:21,569 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452005514] [2021-09-22 14:53:21,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-09-22 14:53:21,569 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-09-22 14:53:21,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-09-22 14:53:21,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:53:21,685 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-09-22 14:53:21,685 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452005514] [2021-09-22 14:53:21,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452005514] provided 1 perfect and 0 imperfect interpolant sequences [2021-09-22 14:53:21,685 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-09-22 14:53:21,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-09-22 14:53:21,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627509600] [2021-09-22 14:53:21,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-09-22 14:53:21,688 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-09-22 14:53:21,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-09-22 14:53:21,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-09-22 14:53:21,692 INFO L87 Difference]: Start difference. First operand 57 states and 117 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-09-22 14:53:21,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-09-22 14:53:21,711 INFO L93 Difference]: Finished difference Result 81 states and 154 transitions. [2021-09-22 14:53:21,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-09-22 14:53:21,711 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-09-22 14:53:21,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-09-22 14:53:21,712 INFO L225 Difference]: With dead ends: 81 [2021-09-22 14:53:21,712 INFO L226 Difference]: Without dead ends: 63 [2021-09-22 14:53:21,713 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.5ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-09-22 14:53:21,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-09-22 14:53:21,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 54. [2021-09-22 14:53:21,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 2.018867924528302) internal successors, (107), 53 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-09-22 14:53:21,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 107 transitions. [2021-09-22 14:53:21,719 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 107 transitions. Word has length 7 [2021-09-22 14:53:21,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-09-22 14:53:21,720 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 107 transitions. [2021-09-22 14:53:21,720 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-09-22 14:53:21,720 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 107 transitions. [2021-09-22 14:53:21,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-09-22 14:53:21,721 INFO L504 BasicCegarLoop]: Found error trace [2021-09-22 14:53:21,721 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-09-22 14:53:21,721 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-09-22 14:53:21,721 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-09-22 14:53:21,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-09-22 14:53:21,722 INFO L82 PathProgramCache]: Analyzing trace with hash -2013166160, now seen corresponding path program 1 times [2021-09-22 14:53:21,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-09-22 14:53:21,722 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044028580] [2021-09-22 14:53:21,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-09-22 14:53:21,723 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-09-22 14:53:21,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-09-22 14:53:21,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:53:21,768 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-09-22 14:53:21,768 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044028580] [2021-09-22 14:53:21,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044028580] provided 1 perfect and 0 imperfect interpolant sequences [2021-09-22 14:53:21,768 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-09-22 14:53:21,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-09-22 14:53:21,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637944336] [2021-09-22 14:53:21,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-09-22 14:53:21,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-09-22 14:53:21,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-09-22 14:53:21,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-09-22 14:53:21,770 INFO L87 Difference]: Start difference. First operand 54 states and 107 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-09-22 14:53:21,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-09-22 14:53:21,779 INFO L93 Difference]: Finished difference Result 51 states and 99 transitions. [2021-09-22 14:53:21,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-09-22 14:53:21,779 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-09-22 14:53:21,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-09-22 14:53:21,780 INFO L225 Difference]: With dead ends: 51 [2021-09-22 14:53:21,780 INFO L226 Difference]: Without dead ends: 51 [2021-09-22 14:53:21,781 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.4ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-09-22 14:53:21,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-09-22 14:53:21,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2021-09-22 14:53:21,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.98) internal successors, (99), 50 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-09-22 14:53:21,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 99 transitions. [2021-09-22 14:53:21,786 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 99 transitions. Word has length 7 [2021-09-22 14:53:21,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-09-22 14:53:21,786 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 99 transitions. [2021-09-22 14:53:21,786 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-09-22 14:53:21,787 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 99 transitions. [2021-09-22 14:53:21,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-09-22 14:53:21,787 INFO L504 BasicCegarLoop]: Found error trace [2021-09-22 14:53:21,787 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-09-22 14:53:21,788 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-09-22 14:53:21,788 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-09-22 14:53:21,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-09-22 14:53:21,788 INFO L82 PathProgramCache]: Analyzing trace with hash 1459155644, now seen corresponding path program 1 times [2021-09-22 14:53:21,789 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-09-22 14:53:21,789 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751569147] [2021-09-22 14:53:21,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-09-22 14:53:21,789 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-09-22 14:53:21,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-09-22 14:53:21,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:53:21,842 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-09-22 14:53:21,843 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751569147] [2021-09-22 14:53:21,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751569147] provided 1 perfect and 0 imperfect interpolant sequences [2021-09-22 14:53:21,843 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-09-22 14:53:21,843 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-09-22 14:53:21,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660801197] [2021-09-22 14:53:21,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-09-22 14:53:21,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-09-22 14:53:21,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-09-22 14:53:21,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-09-22 14:53:21,845 INFO L87 Difference]: Start difference. First operand 51 states and 99 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-09-22 14:53:21,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-09-22 14:53:21,862 INFO L93 Difference]: Finished difference Result 66 states and 124 transitions. [2021-09-22 14:53:21,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-09-22 14:53:21,863 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-09-22 14:53:21,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-09-22 14:53:21,863 INFO L225 Difference]: With dead ends: 66 [2021-09-22 14:53:21,864 INFO L226 Difference]: Without dead ends: 48 [2021-09-22 14:53:21,864 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.4ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-09-22 14:53:21,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-09-22 14:53:21,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2021-09-22 14:53:21,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.8936170212765957) internal successors, (89), 47 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-09-22 14:53:21,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 89 transitions. [2021-09-22 14:53:21,869 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 89 transitions. Word has length 8 [2021-09-22 14:53:21,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-09-22 14:53:21,869 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 89 transitions. [2021-09-22 14:53:21,869 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-09-22 14:53:21,870 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 89 transitions. [2021-09-22 14:53:21,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-09-22 14:53:21,870 INFO L504 BasicCegarLoop]: Found error trace [2021-09-22 14:53:21,870 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-09-22 14:53:21,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-09-22 14:53:21,871 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-09-22 14:53:21,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-09-22 14:53:21,871 INFO L82 PathProgramCache]: Analyzing trace with hash 581783128, now seen corresponding path program 1 times [2021-09-22 14:53:21,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-09-22 14:53:21,872 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591663078] [2021-09-22 14:53:21,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-09-22 14:53:21,872 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-09-22 14:53:21,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-09-22 14:53:21,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:53:21,950 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-09-22 14:53:21,950 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591663078] [2021-09-22 14:53:21,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591663078] provided 1 perfect and 0 imperfect interpolant sequences [2021-09-22 14:53:21,950 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-09-22 14:53:21,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-09-22 14:53:21,951 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56740773] [2021-09-22 14:53:21,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-09-22 14:53:21,951 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-09-22 14:53:21,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-09-22 14:53:21,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-09-22 14:53:21,957 INFO L87 Difference]: Start difference. First operand 48 states and 89 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-09-22 14:53:21,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-09-22 14:53:21,972 INFO L93 Difference]: Finished difference Result 54 states and 96 transitions. [2021-09-22 14:53:21,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-09-22 14:53:21,972 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-09-22 14:53:21,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-09-22 14:53:21,973 INFO L225 Difference]: With dead ends: 54 [2021-09-22 14:53:21,973 INFO L226 Difference]: Without dead ends: 30 [2021-09-22 14:53:21,973 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.7ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-09-22 14:53:21,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-09-22 14:53:21,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-09-22 14:53:21,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.7586206896551724) internal successors, (51), 29 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-09-22 14:53:21,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 51 transitions. [2021-09-22 14:53:21,978 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 51 transitions. Word has length 9 [2021-09-22 14:53:21,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-09-22 14:53:21,979 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 51 transitions. [2021-09-22 14:53:21,979 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-09-22 14:53:21,980 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 51 transitions. [2021-09-22 14:53:21,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-09-22 14:53:21,980 INFO L504 BasicCegarLoop]: Found error trace [2021-09-22 14:53:21,981 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-09-22 14:53:21,981 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-09-22 14:53:21,981 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-09-22 14:53:21,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-09-22 14:53:21,982 INFO L82 PathProgramCache]: Analyzing trace with hash -1918583086, now seen corresponding path program 1 times [2021-09-22 14:53:21,982 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-09-22 14:53:21,982 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739715224] [2021-09-22 14:53:21,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-09-22 14:53:21,982 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-09-22 14:53:21,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-09-22 14:53:22,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-09-22 14:53:22,026 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-09-22 14:53:22,027 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739715224] [2021-09-22 14:53:22,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739715224] provided 1 perfect and 0 imperfect interpolant sequences [2021-09-22 14:53:22,027 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-09-22 14:53:22,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-09-22 14:53:22,027 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168288809] [2021-09-22 14:53:22,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-09-22 14:53:22,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-09-22 14:53:22,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-09-22 14:53:22,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-09-22 14:53:22,029 INFO L87 Difference]: Start difference. First operand 30 states and 51 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-09-22 14:53:22,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-09-22 14:53:22,037 INFO L93 Difference]: Finished difference Result 24 states and 38 transitions. [2021-09-22 14:53:22,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-09-22 14:53:22,037 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-09-22 14:53:22,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-09-22 14:53:22,038 INFO L225 Difference]: With dead ends: 24 [2021-09-22 14:53:22,038 INFO L226 Difference]: Without dead ends: 0 [2021-09-22 14:53:22,038 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.9ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-09-22 14:53:22,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-09-22 14:53:22,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-09-22 14:53:22,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-09-22 14:53:22,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-09-22 14:53:22,039 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2021-09-22 14:53:22,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-09-22 14:53:22,039 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-09-22 14:53:22,040 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-09-22 14:53:22,040 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-09-22 14:53:22,040 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-09-22 14:53:22,042 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-09-22 14:53:22,042 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-09-22 14:53:22,043 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-09-22 14:53:22,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-09-22 14:53:22,046 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-09-22 14:53:22,046 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-09-22 14:53:22,047 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.09 02:53:22 BasicIcfg [2021-09-22 14:53:22,048 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-09-22 14:53:22,048 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-09-22 14:53:22,048 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-09-22 14:53:22,052 INFO L275 PluginConnector]: Witness Printer initialized [2021-09-22 14:53:22,053 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.09 02:53:18" (3/4) ... [2021-09-22 14:53:22,055 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-09-22 14:53:22,060 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-09-22 14:53:22,063 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-09-22 14:53:22,067 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2021-09-22 14:53:22,067 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-09-22 14:53:22,067 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-09-22 14:53:22,067 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-09-22 14:53:22,105 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-09-22 14:53:22,105 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-09-22 14:53:22,107 INFO L168 Benchmark]: Toolchain (without parser) took 4074.13 ms. Allocated memory was 60.8 MB in the beginning and 88.1 MB in the end (delta: 27.3 MB). Free memory was 37.9 MB in the beginning and 43.7 MB in the end (delta: -5.8 MB). Peak memory consumption was 22.8 MB. Max. memory is 16.1 GB. [2021-09-22 14:53:22,107 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 60.8 MB. Free memory was 41.6 MB in the beginning and 41.6 MB in the end (delta: 28.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-09-22 14:53:22,109 INFO L168 Benchmark]: CACSL2BoogieTranslator took 382.18 ms. Allocated memory is still 60.8 MB. Free memory was 37.6 MB in the beginning and 34.4 MB in the end (delta: 3.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-09-22 14:53:22,110 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.10 ms. Allocated memory is still 60.8 MB. Free memory was 34.4 MB in the beginning and 32.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-09-22 14:53:22,111 INFO L168 Benchmark]: Boogie Preprocessor took 18.11 ms. Allocated memory is still 60.8 MB. Free memory was 32.3 MB in the beginning and 31.0 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-09-22 14:53:22,112 INFO L168 Benchmark]: RCFGBuilder took 340.78 ms. Allocated memory was 60.8 MB in the beginning and 73.4 MB in the end (delta: 12.6 MB). Free memory was 31.0 MB in the beginning and 47.7 MB in the end (delta: -16.6 MB). Peak memory consumption was 10.0 MB. Max. memory is 16.1 GB. [2021-09-22 14:53:22,113 INFO L168 Benchmark]: TraceAbstraction took 3236.27 ms. Allocated memory was 73.4 MB in the beginning and 88.1 MB in the end (delta: 14.7 MB). Free memory was 47.2 MB in the beginning and 46.5 MB in the end (delta: 702.2 kB). Peak memory consumption was 13.5 MB. Max. memory is 16.1 GB. [2021-09-22 14:53:22,113 INFO L168 Benchmark]: Witness Printer took 57.33 ms. Allocated memory is still 88.1 MB. Free memory was 46.5 MB in the beginning and 43.7 MB in the end (delta: 2.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-09-22 14:53:22,114 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 60.8 MB. Free memory was 41.6 MB in the beginning and 41.6 MB in the end (delta: 28.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 382.18 ms. Allocated memory is still 60.8 MB. Free memory was 37.6 MB in the beginning and 34.4 MB in the end (delta: 3.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 34.10 ms. Allocated memory is still 60.8 MB. Free memory was 34.4 MB in the beginning and 32.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 18.11 ms. Allocated memory is still 60.8 MB. Free memory was 32.3 MB in the beginning and 31.0 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 340.78 ms. Allocated memory was 60.8 MB in the beginning and 73.4 MB in the end (delta: 12.6 MB). Free memory was 31.0 MB in the beginning and 47.7 MB in the end (delta: -16.6 MB). Peak memory consumption was 10.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3236.27 ms. Allocated memory was 73.4 MB in the beginning and 88.1 MB in the end (delta: 14.7 MB). Free memory was 47.2 MB in the beginning and 46.5 MB in the end (delta: 702.2 kB). Peak memory consumption was 13.5 MB. Max. memory is 16.1 GB. * Witness Printer took 57.33 ms. Allocated memory is still 88.1 MB. Free memory was 46.5 MB in the beginning and 43.7 MB in the end (delta: 2.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2192.0ms, 72 PlacesBefore, 22 PlacesAfterwards, 67 TransitionsBefore, 15 TransitionsAfterwards, 756 CoEnabledTransitionPairs, 6 FixpointIterations, 19 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 2 ChoiceCompositions, 62 TotalNumberOfCompositions, 1496 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 955, positive: 882, positive conditional: 0, positive unconditional: 882, negative: 73, negative conditional: 0, negative unconditional: 73, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 537, positive: 514, positive conditional: 0, positive unconditional: 514, negative: 23, negative conditional: 0, negative unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 537, positive: 511, positive conditional: 0, positive unconditional: 511, negative: 26, negative conditional: 0, negative unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 26, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 23, negative conditional: 0, negative unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 71, positive: 11, positive conditional: 0, positive unconditional: 11, negative: 59, negative conditional: 0, negative unconditional: 59, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 955, positive: 368, positive conditional: 0, positive unconditional: 368, negative: 50, negative conditional: 0, negative unconditional: 50, unknown: 537, unknown conditional: 0, unknown unconditional: 537] , Statistics on independence cache: Total cache size (in pairs): 41, Positive cache size: 33, Positive conditional cache size: 0, Positive unconditional cache size: 33, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 82 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 3076.3ms, OverallIterations: 6, TraceHistogramMax: 1, EmptinessCheckTime: 9.1ms, AutomataDifference: 132.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 2247.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 72 SDtfs, 78 SDslu, 66 SDs, 0 SdLazy, 30 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 28.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 65.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=58occurred in iteration=0, InterpolantAutomatonStates: 24, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 38.6ms AutomataMinimizationTime, 6 MinimizatonAttempts, 9 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 12.2ms SsaConstructionTime, 116.0ms SatisfiabilityAnalysisTime, 358.6ms InterpolantComputationTime, 46 NumberOfCodeBlocks, 46 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 40 ConstructedInterpolants, 0 QuantifiedInterpolants, 222 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-09-22 14:53:22,143 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...