./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe027_pso.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 20ed64ec 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/safe027_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 e252dc11a493b86cf95223e578e74371b6c05709 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-26 14:41:06,122 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-26 14:41:06,124 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-26 14:41:06,157 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-26 14:41:06,160 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-26 14:41:06,163 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-26 14:41:06,164 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-26 14:41:06,169 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-26 14:41:06,171 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-26 14:41:06,177 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-26 14:41:06,178 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-26 14:41:06,380 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-26 14:41:06,380 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-26 14:41:06,381 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-26 14:41:06,382 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-26 14:41:06,383 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-26 14:41:06,383 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-26 14:41:06,384 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-26 14:41:06,385 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-26 14:41:06,386 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-26 14:41:06,387 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-26 14:41:06,387 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-26 14:41:06,388 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-26 14:41:06,389 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-26 14:41:06,390 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-26 14:41:06,390 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-26 14:41:06,391 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-26 14:41:06,391 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-26 14:41:06,391 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-26 14:41:06,392 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-26 14:41:06,392 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-26 14:41:06,393 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-26 14:41:06,393 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-26 14:41:06,394 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-26 14:41:06,394 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-26 14:41:06,395 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-26 14:41:06,395 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-26 14:41:06,395 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-26 14:41:06,396 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-26 14:41:06,396 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-26 14:41:06,397 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-26 14:41:06,402 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-26 14:41:06,424 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-26 14:41:06,428 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-26 14:41:06,428 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-26 14:41:06,429 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-26 14:41:06,429 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-26 14:41:06,430 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-26 14:41:06,430 INFO L138 SettingsManager]: * Use SBE=true [2021-08-26 14:41:06,430 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-26 14:41:06,431 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-26 14:41:06,431 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-26 14:41:06,431 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-26 14:41:06,431 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-26 14:41:06,432 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-26 14:41:06,432 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-26 14:41:06,432 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-26 14:41:06,432 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-26 14:41:06,432 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-26 14:41:06,432 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-26 14:41:06,433 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-26 14:41:06,433 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-26 14:41:06,433 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-26 14:41:06,433 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-26 14:41:06,433 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 14:41:06,433 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-26 14:41:06,433 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-26 14:41:06,434 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-26 14:41:06,434 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-26 14:41:06,434 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-26 14:41:06,434 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-26 14:41:06,434 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-26 14:41:06,434 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e252dc11a493b86cf95223e578e74371b6c05709 [2021-08-26 14:41:06,681 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-26 14:41:06,699 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-26 14:41:06,701 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-26 14:41:06,702 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-26 14:41:06,702 INFO L275 PluginConnector]: CDTParser initialized [2021-08-26 14:41:06,703 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe027_pso.oepc.i [2021-08-26 14:41:06,751 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7243a072f/3a4c346a84c64f0a8e93014b9492ef1e/FLAG44dbd8773 [2021-08-26 14:41:07,180 INFO L306 CDTParser]: Found 1 translation units. [2021-08-26 14:41:07,181 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe027_pso.oepc.i [2021-08-26 14:41:07,189 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7243a072f/3a4c346a84c64f0a8e93014b9492ef1e/FLAG44dbd8773 [2021-08-26 14:41:07,198 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7243a072f/3a4c346a84c64f0a8e93014b9492ef1e [2021-08-26 14:41:07,200 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-26 14:41:07,201 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-26 14:41:07,202 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-26 14:41:07,202 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-26 14:41:07,204 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-26 14:41:07,205 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 02:41:07" (1/1) ... [2021-08-26 14:41:07,205 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ee74b98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:41:07, skipping insertion in model container [2021-08-26 14:41:07,206 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 02:41:07" (1/1) ... [2021-08-26 14:41:07,210 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-26 14:41:07,237 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-26 14:41:07,340 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/safe027_pso.oepc.i[950,963] [2021-08-26 14:41:07,452 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 14:41:07,461 INFO L203 MainTranslator]: Completed pre-run [2021-08-26 14:41:07,472 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/safe027_pso.oepc.i[950,963] [2021-08-26 14:41:07,520 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 14:41:07,548 INFO L208 MainTranslator]: Completed translation [2021-08-26 14:41:07,548 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:41:07 WrapperNode [2021-08-26 14:41:07,549 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-26 14:41:07,549 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-26 14:41:07,550 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-26 14:41:07,550 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-26 14:41:07,557 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:41:07" (1/1) ... [2021-08-26 14:41:07,583 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:41:07" (1/1) ... [2021-08-26 14:41:07,605 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-26 14:41:07,606 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-26 14:41:07,606 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-26 14:41:07,606 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-26 14:41:07,612 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:41:07" (1/1) ... [2021-08-26 14:41:07,612 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:41:07" (1/1) ... [2021-08-26 14:41:07,614 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:41:07" (1/1) ... [2021-08-26 14:41:07,614 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:41:07" (1/1) ... [2021-08-26 14:41:07,617 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:41:07" (1/1) ... [2021-08-26 14:41:07,624 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:41:07" (1/1) ... [2021-08-26 14:41:07,630 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:41:07" (1/1) ... [2021-08-26 14:41:07,631 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-26 14:41:07,632 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-26 14:41:07,632 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-26 14:41:07,632 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-26 14:41:07,636 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:41:07" (1/1) ... [2021-08-26 14:41:07,640 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 14:41:07,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 14:41:07,653 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) [2021-08-26 14:41:07,657 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 [2021-08-26 14:41:07,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-26 14:41:07,682 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-08-26 14:41:07,689 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-26 14:41:07,689 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-26 14:41:07,689 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-08-26 14:41:07,689 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-08-26 14:41:07,689 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-08-26 14:41:07,689 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-08-26 14:41:07,689 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-08-26 14:41:07,689 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-08-26 14:41:07,689 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2021-08-26 14:41:07,689 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2021-08-26 14:41:07,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-26 14:41:07,690 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-08-26 14:41:07,690 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-26 14:41:07,690 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-26 14:41:07,691 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-08-26 14:41:08,035 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-26 14:41:08,035 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-08-26 14:41:08,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 02:41:08 BoogieIcfgContainer [2021-08-26 14:41:08,037 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-26 14:41:08,038 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-26 14:41:08,038 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-26 14:41:08,040 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-26 14:41:08,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 02:41:07" (1/3) ... [2021-08-26 14:41:08,041 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ec7e43c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 02:41:08, skipping insertion in model container [2021-08-26 14:41:08,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 02:41:07" (2/3) ... [2021-08-26 14:41:08,041 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ec7e43c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 02:41:08, skipping insertion in model container [2021-08-26 14:41:08,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 02:41:08" (3/3) ... [2021-08-26 14:41:08,042 INFO L111 eAbstractionObserver]: Analyzing ICFG safe027_pso.oepc.i [2021-08-26 14:41:08,045 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-08-26 14:41:08,047 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-26 14:41:08,047 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-26 14:41:08,047 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-26 14:41:08,082 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:41:08,082 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:41:08,083 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:41:08,083 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:41:08,083 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:41:08,083 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:41:08,083 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:41:08,083 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:41:08,084 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:41:08,084 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:41:08,084 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:41:08,085 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:41:08,085 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:41:08,085 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:41:08,085 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:41:08,086 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:41:08,086 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:41:08,086 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:41:08,086 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:41:08,086 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:41:08,087 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:41:08,087 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:41:08,087 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:41:08,088 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:41:08,088 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:41:08,089 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:41:08,089 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:41:08,089 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:41:08,090 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:41:08,090 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:41:08,090 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:41:08,090 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:41:08,090 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:41:08,091 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:41:08,091 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:41:08,091 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:41:08,091 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:41:08,091 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:41:08,091 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:41:08,092 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:41:08,092 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:41:08,092 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:41:08,092 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:41:08,093 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:41:08,093 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:41:08,093 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:41:08,093 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:41:08,093 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:41:08,096 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:41:08,096 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:41:08,096 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:41:08,097 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:41:08,102 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:41:08,102 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:41:08,102 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:41:08,102 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:41:08,105 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:41:08,105 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:41:08,105 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:41:08,105 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:41:08,107 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:41:08,108 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:41:08,108 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:41:08,108 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-26 14:41:08,110 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-08-26 14:41:08,146 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-26 14:41:08,155 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 [2021-08-26 14:41:08,155 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-08-26 14:41:08,170 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-08-26 14:41:08,187 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 110 places, 99 transitions, 218 flow [2021-08-26 14:41:08,190 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 110 places, 99 transitions, 218 flow [2021-08-26 14:41:08,191 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 110 places, 99 transitions, 218 flow [2021-08-26 14:41:08,240 INFO L129 PetriNetUnfolder]: 2/95 cut-off events. [2021-08-26 14:41:08,240 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-26 14:41:08,243 INFO L84 FinitePrefix]: Finished finitePrefix Result has 108 conditions, 95 events. 2/95 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 52 event pairs, 0 based on Foata normal form. 0/92 useless extension candidates. Maximal degree in co-relation 78. Up to 2 conditions per place. [2021-08-26 14:41:08,246 INFO L116 LiptonReduction]: Number of co-enabled transitions 2114 [2021-08-26 14:41:10,942 INFO L131 LiptonReduction]: Checked pairs total: 3680 [2021-08-26 14:41:10,942 INFO L133 LiptonReduction]: Total number of compositions: 84 [2021-08-26 14:41:10,947 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 38 places, 25 transitions, 70 flow [2021-08-26 14:41:10,974 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 562 states, 561 states have (on average 3.3689839572192515) internal successors, (1890), 561 states have internal predecessors, (1890), 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) [2021-08-26 14:41:10,977 INFO L276 IsEmpty]: Start isEmpty. Operand has 562 states, 561 states have (on average 3.3689839572192515) internal successors, (1890), 561 states have internal predecessors, (1890), 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) [2021-08-26 14:41:10,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-26 14:41:10,982 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 14:41:10,982 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 14:41:10,982 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-26 14:41:10,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 14:41:10,986 INFO L82 PathProgramCache]: Analyzing trace with hash 1925802684, now seen corresponding path program 1 times [2021-08-26 14:41:10,991 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 14:41:10,991 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070288036] [2021-08-26 14:41:10,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 14:41:10,992 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 14:41:11,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 14:41:11,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 14:41:11,138 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 14:41:11,138 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070288036] [2021-08-26 14:41:11,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070288036] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 14:41:11,139 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 14:41:11,139 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-08-26 14:41:11,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973113444] [2021-08-26 14:41:11,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-26 14:41:11,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 14:41:11,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-26 14:41:11,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 14:41:11,160 INFO L87 Difference]: Start difference. First operand has 562 states, 561 states have (on average 3.3689839572192515) internal successors, (1890), 561 states have internal predecessors, (1890), 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 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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) [2021-08-26 14:41:11,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 14:41:11,199 INFO L93 Difference]: Finished difference Result 526 states and 1743 transitions. [2021-08-26 14:41:11,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-26 14:41:11,201 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 10 [2021-08-26 14:41:11,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 14:41:11,218 INFO L225 Difference]: With dead ends: 526 [2021-08-26 14:41:11,218 INFO L226 Difference]: Without dead ends: 526 [2021-08-26 14:41:11,219 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 14:41:11,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2021-08-26 14:41:11,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 526. [2021-08-26 14:41:11,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 525 states have (on average 3.32) internal successors, (1743), 525 states have internal predecessors, (1743), 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) [2021-08-26 14:41:11,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 1743 transitions. [2021-08-26 14:41:11,271 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 1743 transitions. Word has length 10 [2021-08-26 14:41:11,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 14:41:11,271 INFO L470 AbstractCegarLoop]: Abstraction has 526 states and 1743 transitions. [2021-08-26 14:41:11,272 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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) [2021-08-26 14:41:11,272 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 1743 transitions. [2021-08-26 14:41:11,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-08-26 14:41:11,273 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 14:41:11,273 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 14:41:11,273 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-26 14:41:11,274 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-26 14:41:11,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 14:41:11,274 INFO L82 PathProgramCache]: Analyzing trace with hash -429659901, now seen corresponding path program 1 times [2021-08-26 14:41:11,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 14:41:11,275 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312328835] [2021-08-26 14:41:11,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 14:41:11,275 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 14:41:11,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 14:41:11,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 14:41:11,336 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 14:41:11,336 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312328835] [2021-08-26 14:41:11,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312328835] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 14:41:11,336 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 14:41:11,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-26 14:41:11,337 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713144805] [2021-08-26 14:41:11,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-26 14:41:11,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 14:41:11,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-26 14:41:11,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-26 14:41:11,338 INFO L87 Difference]: Start difference. First operand 526 states and 1743 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:41:11,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 14:41:11,363 INFO L93 Difference]: Finished difference Result 634 states and 2040 transitions. [2021-08-26 14:41:11,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-26 14:41:11,364 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-08-26 14:41:11,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 14:41:11,366 INFO L225 Difference]: With dead ends: 634 [2021-08-26 14:41:11,366 INFO L226 Difference]: Without dead ends: 322 [2021-08-26 14:41:11,367 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.0ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-26 14:41:11,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2021-08-26 14:41:11,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 322. [2021-08-26 14:41:11,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 321 states have (on average 3.1401869158878504) internal successors, (1008), 321 states have internal predecessors, (1008), 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) [2021-08-26 14:41:11,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 1008 transitions. [2021-08-26 14:41:11,378 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 1008 transitions. Word has length 11 [2021-08-26 14:41:11,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 14:41:11,378 INFO L470 AbstractCegarLoop]: Abstraction has 322 states and 1008 transitions. [2021-08-26 14:41:11,378 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:41:11,378 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 1008 transitions. [2021-08-26 14:41:11,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-26 14:41:11,379 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 14:41:11,379 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 14:41:11,380 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-26 14:41:11,380 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-26 14:41:11,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 14:41:11,380 INFO L82 PathProgramCache]: Analyzing trace with hash -435539107, now seen corresponding path program 1 times [2021-08-26 14:41:11,381 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 14:41:11,381 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146676065] [2021-08-26 14:41:11,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 14:41:11,381 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 14:41:11,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 14:41:11,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 14:41:11,439 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 14:41:11,439 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146676065] [2021-08-26 14:41:11,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146676065] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 14:41:11,439 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 14:41:11,439 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-08-26 14:41:11,440 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630692081] [2021-08-26 14:41:11,440 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-26 14:41:11,440 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 14:41:11,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-26 14:41:11,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 14:41:11,441 INFO L87 Difference]: Start difference. First operand 322 states and 1008 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:41:11,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 14:41:11,445 INFO L93 Difference]: Finished difference Result 304 states and 939 transitions. [2021-08-26 14:41:11,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-26 14:41:11,446 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-08-26 14:41:11,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 14:41:11,448 INFO L225 Difference]: With dead ends: 304 [2021-08-26 14:41:11,448 INFO L226 Difference]: Without dead ends: 304 [2021-08-26 14:41:11,448 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 14:41:11,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2021-08-26 14:41:11,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 304. [2021-08-26 14:41:11,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 303 states have (on average 3.099009900990099) internal successors, (939), 303 states have internal predecessors, (939), 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) [2021-08-26 14:41:11,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 939 transitions. [2021-08-26 14:41:11,457 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 939 transitions. Word has length 12 [2021-08-26 14:41:11,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 14:41:11,457 INFO L470 AbstractCegarLoop]: Abstraction has 304 states and 939 transitions. [2021-08-26 14:41:11,458 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:41:11,458 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 939 transitions. [2021-08-26 14:41:11,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-08-26 14:41:11,459 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 14:41:11,459 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 14:41:11,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-26 14:41:11,459 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-26 14:41:11,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 14:41:11,460 INFO L82 PathProgramCache]: Analyzing trace with hash -333007795, now seen corresponding path program 1 times [2021-08-26 14:41:11,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 14:41:11,460 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447289540] [2021-08-26 14:41:11,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 14:41:11,461 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 14:41:11,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 14:41:11,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 14:41:11,521 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 14:41:11,522 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447289540] [2021-08-26 14:41:11,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447289540] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 14:41:11,523 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 14:41:11,523 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-26 14:41:11,523 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916145081] [2021-08-26 14:41:11,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-26 14:41:11,524 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 14:41:11,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-26 14:41:11,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-26 14:41:11,530 INFO L87 Difference]: Start difference. First operand 304 states and 939 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:41:11,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 14:41:11,557 INFO L93 Difference]: Finished difference Result 406 states and 1208 transitions. [2021-08-26 14:41:11,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-26 14:41:11,558 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-08-26 14:41:11,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 14:41:11,559 INFO L225 Difference]: With dead ends: 406 [2021-08-26 14:41:11,559 INFO L226 Difference]: Without dead ends: 226 [2021-08-26 14:41:11,559 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.8ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-08-26 14:41:11,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2021-08-26 14:41:11,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2021-08-26 14:41:11,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 225 states have (on average 2.8933333333333335) internal successors, (651), 225 states have internal predecessors, (651), 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) [2021-08-26 14:41:11,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 651 transitions. [2021-08-26 14:41:11,565 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 651 transitions. Word has length 13 [2021-08-26 14:41:11,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 14:41:11,565 INFO L470 AbstractCegarLoop]: Abstraction has 226 states and 651 transitions. [2021-08-26 14:41:11,565 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:41:11,565 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 651 transitions. [2021-08-26 14:41:11,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-08-26 14:41:11,568 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 14:41:11,568 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 14:41:11,569 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-26 14:41:11,569 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-26 14:41:11,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 14:41:11,572 INFO L82 PathProgramCache]: Analyzing trace with hash -1941284929, now seen corresponding path program 1 times [2021-08-26 14:41:11,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 14:41:11,573 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940176942] [2021-08-26 14:41:11,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 14:41:11,573 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 14:41:11,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 14:41:11,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 14:41:11,654 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 14:41:11,654 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940176942] [2021-08-26 14:41:11,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940176942] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 14:41:11,654 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 14:41:11,654 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-26 14:41:11,654 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18927301] [2021-08-26 14:41:11,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-26 14:41:11,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 14:41:11,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-26 14:41:11,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-26 14:41:11,655 INFO L87 Difference]: Start difference. First operand 226 states and 651 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:41:11,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 14:41:11,677 INFO L93 Difference]: Finished difference Result 287 states and 773 transitions. [2021-08-26 14:41:11,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-26 14:41:11,678 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-08-26 14:41:11,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 14:41:11,679 INFO L225 Difference]: With dead ends: 287 [2021-08-26 14:41:11,679 INFO L226 Difference]: Without dead ends: 206 [2021-08-26 14:41:11,679 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.0ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-26 14:41:11,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2021-08-26 14:41:11,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2021-08-26 14:41:11,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 205 states have (on average 2.726829268292683) internal successors, (559), 205 states have internal predecessors, (559), 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) [2021-08-26 14:41:11,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 559 transitions. [2021-08-26 14:41:11,684 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 559 transitions. Word has length 14 [2021-08-26 14:41:11,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 14:41:11,684 INFO L470 AbstractCegarLoop]: Abstraction has 206 states and 559 transitions. [2021-08-26 14:41:11,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:41:11,684 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 559 transitions. [2021-08-26 14:41:11,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-08-26 14:41:11,685 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 14:41:11,685 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 14:41:11,685 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-26 14:41:11,685 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-26 14:41:11,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 14:41:11,685 INFO L82 PathProgramCache]: Analyzing trace with hash -279322964, now seen corresponding path program 1 times [2021-08-26 14:41:11,686 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 14:41:11,686 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076906302] [2021-08-26 14:41:11,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 14:41:11,686 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 14:41:11,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 14:41:11,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 14:41:11,739 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 14:41:11,739 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076906302] [2021-08-26 14:41:11,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076906302] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 14:41:11,740 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 14:41:11,740 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-26 14:41:11,740 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678172202] [2021-08-26 14:41:11,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-26 14:41:11,740 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 14:41:11,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-26 14:41:11,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-26 14:41:11,741 INFO L87 Difference]: Start difference. First operand 206 states and 559 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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) [2021-08-26 14:41:11,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 14:41:11,776 INFO L93 Difference]: Finished difference Result 227 states and 565 transitions. [2021-08-26 14:41:11,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-26 14:41:11,777 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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 15 [2021-08-26 14:41:11,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 14:41:11,777 INFO L225 Difference]: With dead ends: 227 [2021-08-26 14:41:11,778 INFO L226 Difference]: Without dead ends: 162 [2021-08-26 14:41:11,778 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 10.7ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-08-26 14:41:11,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2021-08-26 14:41:11,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2021-08-26 14:41:11,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 161 states have (on average 2.4285714285714284) internal successors, (391), 161 states have internal predecessors, (391), 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) [2021-08-26 14:41:11,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 391 transitions. [2021-08-26 14:41:11,781 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 391 transitions. Word has length 15 [2021-08-26 14:41:11,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 14:41:11,781 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 391 transitions. [2021-08-26 14:41:11,782 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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) [2021-08-26 14:41:11,782 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 391 transitions. [2021-08-26 14:41:11,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-08-26 14:41:11,782 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 14:41:11,782 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 14:41:11,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-26 14:41:11,783 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-26 14:41:11,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 14:41:11,783 INFO L82 PathProgramCache]: Analyzing trace with hash -955300022, now seen corresponding path program 1 times [2021-08-26 14:41:11,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 14:41:11,783 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480334503] [2021-08-26 14:41:11,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 14:41:11,784 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 14:41:11,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 14:41:11,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 14:41:11,825 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 14:41:11,825 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480334503] [2021-08-26 14:41:11,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480334503] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 14:41:11,825 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 14:41:11,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-26 14:41:11,825 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077139653] [2021-08-26 14:41:11,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-26 14:41:11,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 14:41:11,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-26 14:41:11,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-08-26 14:41:11,827 INFO L87 Difference]: Start difference. First operand 162 states and 391 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:41:11,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 14:41:11,858 INFO L93 Difference]: Finished difference Result 158 states and 360 transitions. [2021-08-26 14:41:11,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-26 14:41:11,860 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-08-26 14:41:11,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 14:41:11,861 INFO L225 Difference]: With dead ends: 158 [2021-08-26 14:41:11,861 INFO L226 Difference]: Without dead ends: 125 [2021-08-26 14:41:11,861 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 13.9ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-08-26 14:41:11,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-08-26 14:41:11,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2021-08-26 14:41:11,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 124 states have (on average 2.274193548387097) internal successors, (282), 124 states have internal predecessors, (282), 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) [2021-08-26 14:41:11,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 282 transitions. [2021-08-26 14:41:11,864 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 282 transitions. Word has length 16 [2021-08-26 14:41:11,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 14:41:11,864 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 282 transitions. [2021-08-26 14:41:11,864 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 14:41:11,864 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 282 transitions. [2021-08-26 14:41:11,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-08-26 14:41:11,865 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 14:41:11,865 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 14:41:11,865 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-26 14:41:11,865 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-26 14:41:11,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 14:41:11,865 INFO L82 PathProgramCache]: Analyzing trace with hash -1965763280, now seen corresponding path program 1 times [2021-08-26 14:41:11,866 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 14:41:11,866 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768201574] [2021-08-26 14:41:11,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 14:41:11,866 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 14:41:11,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 14:41:11,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 14:41:11,911 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 14:41:11,911 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768201574] [2021-08-26 14:41:11,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768201574] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 14:41:11,911 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 14:41:11,911 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-26 14:41:11,911 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497756945] [2021-08-26 14:41:11,911 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-26 14:41:11,911 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 14:41:11,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-26 14:41:11,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-26 14:41:11,912 INFO L87 Difference]: Start difference. First operand 125 states and 282 transitions. Second operand has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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) [2021-08-26 14:41:11,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 14:41:11,958 INFO L93 Difference]: Finished difference Result 120 states and 270 transitions. [2021-08-26 14:41:11,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-26 14:41:11,959 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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 18 [2021-08-26 14:41:11,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 14:41:11,959 INFO L225 Difference]: With dead ends: 120 [2021-08-26 14:41:11,960 INFO L226 Difference]: Without dead ends: 111 [2021-08-26 14:41:11,960 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 19.4ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-08-26 14:41:11,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-08-26 14:41:11,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2021-08-26 14:41:11,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 110 states have (on average 2.309090909090909) internal successors, (254), 110 states have internal predecessors, (254), 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) [2021-08-26 14:41:11,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 254 transitions. [2021-08-26 14:41:11,962 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 254 transitions. Word has length 18 [2021-08-26 14:41:11,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 14:41:11,962 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 254 transitions. [2021-08-26 14:41:11,963 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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) [2021-08-26 14:41:11,963 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 254 transitions. [2021-08-26 14:41:11,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-08-26 14:41:11,963 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 14:41:11,963 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 14:41:11,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-26 14:41:11,964 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-26 14:41:11,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 14:41:11,964 INFO L82 PathProgramCache]: Analyzing trace with hash 621276387, now seen corresponding path program 1 times [2021-08-26 14:41:11,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 14:41:11,966 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323302806] [2021-08-26 14:41:11,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 14:41:11,966 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 14:41:11,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 14:41:12,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 14:41:12,016 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 14:41:12,018 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323302806] [2021-08-26 14:41:12,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323302806] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 14:41:12,019 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 14:41:12,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-26 14:41:12,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706754231] [2021-08-26 14:41:12,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-26 14:41:12,020 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 14:41:12,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-26 14:41:12,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-26 14:41:12,021 INFO L87 Difference]: Start difference. First operand 111 states and 254 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 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) [2021-08-26 14:41:12,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 14:41:12,031 INFO L93 Difference]: Finished difference Result 144 states and 327 transitions. [2021-08-26 14:41:12,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-26 14:41:12,032 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 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 20 [2021-08-26 14:41:12,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 14:41:12,032 INFO L225 Difference]: With dead ends: 144 [2021-08-26 14:41:12,032 INFO L226 Difference]: Without dead ends: 71 [2021-08-26 14:41:12,033 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.9ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-26 14:41:12,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-08-26 14:41:12,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2021-08-26 14:41:12,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 2.0428571428571427) internal successors, (143), 70 states have internal predecessors, (143), 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) [2021-08-26 14:41:12,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 143 transitions. [2021-08-26 14:41:12,034 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 143 transitions. Word has length 20 [2021-08-26 14:41:12,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 14:41:12,036 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 143 transitions. [2021-08-26 14:41:12,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 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) [2021-08-26 14:41:12,036 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 143 transitions. [2021-08-26 14:41:12,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-08-26 14:41:12,036 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 14:41:12,036 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 14:41:12,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-08-26 14:41:12,037 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-26 14:41:12,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 14:41:12,037 INFO L82 PathProgramCache]: Analyzing trace with hash 685908083, now seen corresponding path program 2 times [2021-08-26 14:41:12,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 14:41:12,037 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134335336] [2021-08-26 14:41:12,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 14:41:12,037 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 14:41:12,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 14:41:12,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 14:41:12,082 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 14:41:12,084 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134335336] [2021-08-26 14:41:12,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134335336] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 14:41:12,084 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 14:41:12,084 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-26 14:41:12,084 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587678642] [2021-08-26 14:41:12,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-26 14:41:12,085 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 14:41:12,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-26 14:41:12,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-26 14:41:12,087 INFO L87 Difference]: Start difference. First operand 71 states and 143 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 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) [2021-08-26 14:41:12,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 14:41:12,096 INFO L93 Difference]: Finished difference Result 70 states and 142 transitions. [2021-08-26 14:41:12,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-26 14:41:12,097 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 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 20 [2021-08-26 14:41:12,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 14:41:12,097 INFO L225 Difference]: With dead ends: 70 [2021-08-26 14:41:12,097 INFO L226 Difference]: Without dead ends: 0 [2021-08-26 14:41:12,097 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.9ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-26 14:41:12,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-26 14:41:12,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-26 14:41:12,098 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) [2021-08-26 14:41:12,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-26 14:41:12,098 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2021-08-26 14:41:12,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 14:41:12,098 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-26 14:41:12,098 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 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) [2021-08-26 14:41:12,098 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-26 14:41:12,099 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-26 14:41:12,100 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 14:41:12,100 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-08-26 14:41:12,101 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-08-26 14:41:12,101 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-08-26 14:41:12,101 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATION [2021-08-26 14:41:12,101 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-08-26 14:41:12,103 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-08-26 14:41:12,103 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-26 14:41:12,105 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 02:41:12 BasicIcfg [2021-08-26 14:41:12,105 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-26 14:41:12,106 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-26 14:41:12,106 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-26 14:41:12,106 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-26 14:41:12,106 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 02:41:08" (3/4) ... [2021-08-26 14:41:12,108 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-26 14:41:12,112 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-08-26 14:41:12,112 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-08-26 14:41:12,112 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2021-08-26 14:41:12,113 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2021-08-26 14:41:12,115 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2021-08-26 14:41:12,115 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-08-26 14:41:12,115 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-26 14:41:12,115 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-26 14:41:12,133 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-26 14:41:12,134 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-26 14:41:12,135 INFO L168 Benchmark]: Toolchain (without parser) took 4933.47 ms. Allocated memory was 54.5 MB in the beginning and 144.7 MB in the end (delta: 90.2 MB). Free memory was 30.3 MB in the beginning and 106.8 MB in the end (delta: -76.5 MB). Peak memory consumption was 13.3 MB. Max. memory is 16.1 GB. [2021-08-26 14:41:12,135 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 54.5 MB. Free memory was 37.1 MB in the beginning and 37.1 MB in the end (delta: 36.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 14:41:12,135 INFO L168 Benchmark]: CACSL2BoogieTranslator took 347.06 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 30.1 MB in the beginning and 41.1 MB in the end (delta: -11.0 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. [2021-08-26 14:41:12,135 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.91 ms. Allocated memory is still 67.1 MB. Free memory was 41.1 MB in the beginning and 39.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 14:41:12,136 INFO L168 Benchmark]: Boogie Preprocessor took 25.65 ms. Allocated memory is still 67.1 MB. Free memory was 39.1 MB in the beginning and 37.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 14:41:12,136 INFO L168 Benchmark]: RCFGBuilder took 404.96 ms. Allocated memory is still 67.1 MB. Free memory was 37.6 MB in the beginning and 44.2 MB in the end (delta: -6.6 MB). Peak memory consumption was 13.9 MB. Max. memory is 16.1 GB. [2021-08-26 14:41:12,136 INFO L168 Benchmark]: TraceAbstraction took 4067.30 ms. Allocated memory was 67.1 MB in the beginning and 144.7 MB in the end (delta: 77.6 MB). Free memory was 43.7 MB in the beginning and 109.9 MB in the end (delta: -66.3 MB). Peak memory consumption was 12.2 MB. Max. memory is 16.1 GB. [2021-08-26 14:41:12,136 INFO L168 Benchmark]: Witness Printer took 28.14 ms. Allocated memory is still 144.7 MB. Free memory was 109.9 MB in the beginning and 106.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 14:41:12,138 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 54.5 MB. Free memory was 37.1 MB in the beginning and 37.1 MB in the end (delta: 36.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 347.06 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 30.1 MB in the beginning and 41.1 MB in the end (delta: -11.0 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 55.91 ms. Allocated memory is still 67.1 MB. Free memory was 41.1 MB in the beginning and 39.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 25.65 ms. Allocated memory is still 67.1 MB. Free memory was 39.1 MB in the beginning and 37.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 404.96 ms. Allocated memory is still 67.1 MB. Free memory was 37.6 MB in the beginning and 44.2 MB in the end (delta: -6.6 MB). Peak memory consumption was 13.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4067.30 ms. Allocated memory was 67.1 MB in the beginning and 144.7 MB in the end (delta: 77.6 MB). Free memory was 43.7 MB in the beginning and 109.9 MB in the end (delta: -66.3 MB). Peak memory consumption was 12.2 MB. Max. memory is 16.1 GB. * Witness Printer took 28.14 ms. Allocated memory is still 144.7 MB. Free memory was 109.9 MB in the beginning and 106.8 MB in the end (delta: 3.1 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 Lipton Reduction Statistics: ReductionTime: 2752.4ms, 110 PlacesBefore, 38 PlacesAfterwards, 99 TransitionsBefore, 25 TransitionsAfterwards, 2114 CoEnabledTransitionPairs, 6 FixpointIterations, 21 TrivialSequentialCompositions, 54 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 2 ChoiceCompositions, 84 TotalNumberOfCompositions, 3680 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2006, positive: 1907, positive conditional: 0, positive unconditional: 1907, negative: 99, negative conditional: 0, negative unconditional: 99, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1341, positive: 1303, positive conditional: 0, positive unconditional: 1303, negative: 38, negative conditional: 0, negative unconditional: 38, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1341, positive: 1291, positive conditional: 0, positive unconditional: 1291, negative: 50, negative conditional: 0, negative unconditional: 50, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 50, positive: 12, positive conditional: 0, positive unconditional: 12, negative: 38, negative conditional: 0, negative unconditional: 38, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 73, positive: 26, positive conditional: 0, positive unconditional: 26, negative: 47, negative conditional: 0, negative unconditional: 47, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2006, positive: 604, positive conditional: 0, positive unconditional: 604, negative: 61, negative conditional: 0, negative unconditional: 61, unknown: 1341, unknown conditional: 0, unknown unconditional: 1341] , Statistics on independence cache: Total cache size (in pairs): 74, Positive cache size: 61, Positive conditional cache size: 0, Positive unconditional cache size: 61, Negative cache size: 13, Negative conditional cache size: 0, Negative unconditional cache size: 13 - 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 9 procedures, 128 locations, 5 error locations. Started 1 CEGAR loops. OverallTime: 3957.7ms, OverallIterations: 10, TraceHistogramMax: 1, EmptinessCheckTime: 16.0ms, AutomataDifference: 310.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 2819.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 209 SDtfs, 259 SDslu, 318 SDs, 0 SdLazy, 179 SolverSat, 48 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 110.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 35 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 92.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=562occurred in iteration=0, InterpolantAutomatonStates: 48, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 82.7ms AutomataMinimizationTime, 10 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 17.0ms SsaConstructionTime, 140.9ms SatisfiabilityAnalysisTime, 405.5ms InterpolantComputationTime, 149 NumberOfCodeBlocks, 149 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 139 ConstructedInterpolants, 0 QuantifiedInterpolants, 477 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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! [2021-08-26 14:41:12,163 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...