./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe016_pso.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 96f16385 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/safe016_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 d652d9f3fdf88a4a943ccd902b0488ac0eab24b5 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-96f1638 [2020-12-02 12:08:31,263 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-02 12:08:31,268 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-02 12:08:31,304 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-02 12:08:31,305 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-02 12:08:31,306 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-02 12:08:31,308 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-02 12:08:31,311 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-02 12:08:31,313 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-02 12:08:31,315 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-02 12:08:31,316 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-02 12:08:31,318 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-02 12:08:31,318 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-02 12:08:31,320 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-02 12:08:31,321 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-02 12:08:31,323 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-02 12:08:31,324 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-02 12:08:31,326 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-02 12:08:31,328 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-02 12:08:31,331 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-02 12:08:31,333 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-02 12:08:31,335 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-02 12:08:31,340 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-02 12:08:31,341 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-02 12:08:31,348 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-02 12:08:31,350 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-02 12:08:31,351 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-02 12:08:31,353 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-02 12:08:31,355 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-02 12:08:31,357 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-02 12:08:31,357 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-02 12:08:31,358 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-02 12:08:31,360 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-02 12:08:31,365 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-02 12:08:31,366 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-02 12:08:31,376 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-02 12:08:31,380 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-02 12:08:31,380 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-02 12:08:31,381 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-02 12:08:31,384 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-02 12:08:31,385 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-02 12:08:31,386 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-02 12:08:31,436 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-02 12:08:31,437 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-02 12:08:31,438 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-02 12:08:31,439 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-02 12:08:31,439 INFO L138 SettingsManager]: * Use SBE=true [2020-12-02 12:08:31,439 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-02 12:08:31,440 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-02 12:08:31,440 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-02 12:08:31,440 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-02 12:08:31,441 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-02 12:08:31,441 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-02 12:08:31,441 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-02 12:08:31,441 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-02 12:08:31,441 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-02 12:08:31,442 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-02 12:08:31,442 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-02 12:08:31,442 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-02 12:08:31,442 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-02 12:08:31,443 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-02 12:08:31,443 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-02 12:08:31,443 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-02 12:08:31,443 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-02 12:08:31,444 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-02 12:08:31,444 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-02 12:08:31,444 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-02 12:08:31,445 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-02 12:08:31,445 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-02 12:08:31,445 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-02 12:08:31,445 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-02 12:08:31,446 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d652d9f3fdf88a4a943ccd902b0488ac0eab24b5 [2020-12-02 12:08:31,860 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-02 12:08:31,891 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-02 12:08:31,894 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-02 12:08:31,896 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-02 12:08:31,897 INFO L275 PluginConnector]: CDTParser initialized [2020-12-02 12:08:31,898 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe016_pso.oepc.i [2020-12-02 12:08:31,990 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f69070cf5/f25a7728885f40479ce863668b4c2434/FLAG622a2a62f [2020-12-02 12:08:32,691 INFO L306 CDTParser]: Found 1 translation units. [2020-12-02 12:08:32,694 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe016_pso.oepc.i [2020-12-02 12:08:32,720 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f69070cf5/f25a7728885f40479ce863668b4c2434/FLAG622a2a62f [2020-12-02 12:08:32,971 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f69070cf5/f25a7728885f40479ce863668b4c2434 [2020-12-02 12:08:32,978 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-02 12:08:32,980 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-02 12:08:32,982 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-02 12:08:32,983 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-02 12:08:32,988 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-02 12:08:32,990 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:08:32" (1/1) ... [2020-12-02 12:08:33,000 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d8cdbe6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:08:32, skipping insertion in model container [2020-12-02 12:08:33,001 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:08:32" (1/1) ... [2020-12-02 12:08:33,010 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-02 12:08:33,104 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-02 12:08:33,265 WARN L226 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/safe016_pso.oepc.i[950,963] [2020-12-02 12:08:33,513 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-02 12:08:33,546 INFO L203 MainTranslator]: Completed pre-run [2020-12-02 12:08:33,561 WARN L226 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/safe016_pso.oepc.i[950,963] [2020-12-02 12:08:33,635 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-02 12:08:33,731 INFO L208 MainTranslator]: Completed translation [2020-12-02 12:08:33,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:08:33 WrapperNode [2020-12-02 12:08:33,732 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-02 12:08:33,733 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-02 12:08:33,734 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-02 12:08:33,734 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-02 12:08:33,743 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:08:33" (1/1) ... [2020-12-02 12:08:33,760 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:08:33" (1/1) ... [2020-12-02 12:08:33,791 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-02 12:08:33,792 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-02 12:08:33,793 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-02 12:08:33,793 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-02 12:08:33,802 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:08:33" (1/1) ... [2020-12-02 12:08:33,803 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:08:33" (1/1) ... [2020-12-02 12:08:33,806 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:08:33" (1/1) ... [2020-12-02 12:08:33,806 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:08:33" (1/1) ... [2020-12-02 12:08:33,813 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:08:33" (1/1) ... [2020-12-02 12:08:33,816 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:08:33" (1/1) ... [2020-12-02 12:08:33,818 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:08:33" (1/1) ... [2020-12-02 12:08:33,822 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-02 12:08:33,823 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-02 12:08:33,823 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-02 12:08:33,823 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-02 12:08:33,826 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:08:33" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-02 12:08:33,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-02 12:08:33,935 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-02 12:08:33,935 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-02 12:08:33,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-02 12:08:33,935 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-02 12:08:33,935 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-02 12:08:33,936 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-02 12:08:33,936 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-02 12:08:33,936 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-12-02 12:08:33,936 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-12-02 12:08:33,936 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-12-02 12:08:33,936 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-12-02 12:08:33,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-02 12:08:33,937 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-02 12:08:33,937 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-02 12:08:33,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-02 12:08:33,939 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-12-02 12:08:34,450 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-02 12:08:34,450 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-02 12:08:34,453 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:08:34 BoogieIcfgContainer [2020-12-02 12:08:34,453 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-02 12:08:34,455 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-02 12:08:34,455 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-02 12:08:34,464 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-02 12:08:34,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 12:08:32" (1/3) ... [2020-12-02 12:08:34,465 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74871d00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:08:34, skipping insertion in model container [2020-12-02 12:08:34,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:08:33" (2/3) ... [2020-12-02 12:08:34,466 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74871d00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:08:34, skipping insertion in model container [2020-12-02 12:08:34,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:08:34" (3/3) ... [2020-12-02 12:08:34,469 INFO L111 eAbstractionObserver]: Analyzing ICFG safe016_pso.oepc.i [2020-12-02 12:08:34,490 WARN L169 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-02 12:08:34,490 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-02 12:08:34,496 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-02 12:08:34,497 INFO L354 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-02 12:08:34,561 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:34,561 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:34,561 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:34,562 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:34,562 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:34,563 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:34,563 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:34,563 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:34,564 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:34,565 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:34,565 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:34,565 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:34,566 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:34,566 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:34,566 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:34,567 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:34,567 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:34,567 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:34,568 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:34,568 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:34,569 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:34,570 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:34,570 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:34,571 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:34,578 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:34,578 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:34,578 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:34,578 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:34,579 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:34,580 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:34,580 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:34,580 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:34,581 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:34,582 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:34,582 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:34,582 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:34,583 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:34,584 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:34,584 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:34,584 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:34,584 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:34,585 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:34,585 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:34,585 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:34,585 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:34,586 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:34,586 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:34,586 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:34,590 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:34,590 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:34,591 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:34,591 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:34,601 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:34,601 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:34,602 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:34,602 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:34,608 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:34,609 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:34,609 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:34,609 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:34,621 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:34,621 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:34,621 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:34,622 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:08:34,627 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-02 12:08:34,642 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-12-02 12:08:34,683 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-02 12:08:34,683 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-02 12:08:34,684 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-02 12:08:34,684 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-02 12:08:34,684 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-02 12:08:34,684 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-02 12:08:34,685 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-02 12:08:34,686 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-02 12:08:34,709 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-02 12:08:34,717 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 96 places, 85 transitions, 190 flow [2020-12-02 12:08:34,721 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 96 places, 85 transitions, 190 flow [2020-12-02 12:08:34,724 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 96 places, 85 transitions, 190 flow [2020-12-02 12:08:34,789 INFO L129 PetriNetUnfolder]: 2/81 cut-off events. [2020-12-02 12:08:34,789 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-02 12:08:34,794 INFO L84 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 81 events. 2/81 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 64 event pairs, 0 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2020-12-02 12:08:34,798 INFO L116 LiptonReduction]: Number of co-enabled transitions 1866 [2020-12-02 12:08:37,263 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 48 [2020-12-02 12:08:37,409 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 48 [2020-12-02 12:08:37,792 WARN L197 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-12-02 12:08:37,897 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-12-02 12:08:38,158 WARN L197 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-12-02 12:08:38,262 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-12-02 12:08:38,347 INFO L131 LiptonReduction]: Checked pairs total: 3411 [2020-12-02 12:08:38,348 INFO L133 LiptonReduction]: Total number of compositions: 70 [2020-12-02 12:08:38,355 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 39 places, 27 transitions, 74 flow [2020-12-02 12:08:38,428 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 850 states. [2020-12-02 12:08:38,431 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states. [2020-12-02 12:08:38,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-02 12:08:38,442 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:08:38,443 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:08:38,444 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:08:38,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:08:38,451 INFO L82 PathProgramCache]: Analyzing trace with hash -975438877, now seen corresponding path program 1 times [2020-12-02 12:08:38,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:08:38,462 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373110221] [2020-12-02 12:08:38,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:08:38,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:08:38,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 12:08:38,670 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373110221] [2020-12-02 12:08:38,671 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:08:38,671 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 12:08:38,672 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463396428] [2020-12-02 12:08:38,679 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-02 12:08:38,680 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:08:38,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-02 12:08:38,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-02 12:08:38,703 INFO L87 Difference]: Start difference. First operand 850 states. Second operand 2 states. [2020-12-02 12:08:38,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:08:38,773 INFO L93 Difference]: Finished difference Result 850 states and 2994 transitions. [2020-12-02 12:08:38,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-02 12:08:38,775 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-12-02 12:08:38,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:08:38,820 INFO L225 Difference]: With dead ends: 850 [2020-12-02 12:08:38,820 INFO L226 Difference]: Without dead ends: 706 [2020-12-02 12:08:38,821 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-02 12:08:38,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2020-12-02 12:08:38,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 706. [2020-12-02 12:08:38,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 706 states. [2020-12-02 12:08:38,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 2442 transitions. [2020-12-02 12:08:38,958 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 2442 transitions. Word has length 10 [2020-12-02 12:08:38,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:08:38,959 INFO L481 AbstractCegarLoop]: Abstraction has 706 states and 2442 transitions. [2020-12-02 12:08:38,960 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-02 12:08:38,960 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 2442 transitions. [2020-12-02 12:08:38,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-02 12:08:38,963 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:08:38,963 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:08:38,964 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-02 12:08:38,964 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:08:38,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:08:38,965 INFO L82 PathProgramCache]: Analyzing trace with hash -173841252, now seen corresponding path program 1 times [2020-12-02 12:08:38,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:08:38,966 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10448799] [2020-12-02 12:08:38,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:08:39,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:08:39,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 12:08:39,168 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10448799] [2020-12-02 12:08:39,168 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:08:39,168 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 12:08:39,169 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895505854] [2020-12-02 12:08:39,170 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 12:08:39,170 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:08:39,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 12:08:39,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:08:39,172 INFO L87 Difference]: Start difference. First operand 706 states and 2442 transitions. Second operand 4 states. [2020-12-02 12:08:39,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:08:39,220 INFO L93 Difference]: Finished difference Result 802 states and 2662 transitions. [2020-12-02 12:08:39,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-02 12:08:39,221 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-02 12:08:39,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:08:39,228 INFO L225 Difference]: With dead ends: 802 [2020-12-02 12:08:39,229 INFO L226 Difference]: Without dead ends: 658 [2020-12-02 12:08:39,230 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:08:39,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2020-12-02 12:08:39,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 658. [2020-12-02 12:08:39,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 658 states. [2020-12-02 12:08:39,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 2230 transitions. [2020-12-02 12:08:39,271 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 2230 transitions. Word has length 11 [2020-12-02 12:08:39,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:08:39,273 INFO L481 AbstractCegarLoop]: Abstraction has 658 states and 2230 transitions. [2020-12-02 12:08:39,274 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 12:08:39,274 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 2230 transitions. [2020-12-02 12:08:39,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-02 12:08:39,283 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:08:39,283 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:08:39,284 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-02 12:08:39,284 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:08:39,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:08:39,294 INFO L82 PathProgramCache]: Analyzing trace with hash -1324654725, now seen corresponding path program 1 times [2020-12-02 12:08:39,295 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:08:39,295 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559726610] [2020-12-02 12:08:39,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:08:39,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:08:39,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 12:08:39,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559726610] [2020-12-02 12:08:39,508 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:08:39,508 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:08:39,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977658969] [2020-12-02 12:08:39,509 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:08:39,509 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:08:39,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:08:39,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:08:39,510 INFO L87 Difference]: Start difference. First operand 658 states and 2230 transitions. Second operand 5 states. [2020-12-02 12:08:39,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:08:39,606 INFO L93 Difference]: Finished difference Result 1164 states and 3733 transitions. [2020-12-02 12:08:39,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-02 12:08:39,606 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-12-02 12:08:39,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:08:39,616 INFO L225 Difference]: With dead ends: 1164 [2020-12-02 12:08:39,616 INFO L226 Difference]: Without dead ends: 902 [2020-12-02 12:08:39,617 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-02 12:08:39,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 902 states. [2020-12-02 12:08:39,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 902 to 750. [2020-12-02 12:08:39,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 750 states. [2020-12-02 12:08:39,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 750 states to 750 states and 2414 transitions. [2020-12-02 12:08:39,666 INFO L78 Accepts]: Start accepts. Automaton has 750 states and 2414 transitions. Word has length 12 [2020-12-02 12:08:39,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:08:39,666 INFO L481 AbstractCegarLoop]: Abstraction has 750 states and 2414 transitions. [2020-12-02 12:08:39,666 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:08:39,667 INFO L276 IsEmpty]: Start isEmpty. Operand 750 states and 2414 transitions. [2020-12-02 12:08:39,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-02 12:08:39,669 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:08:39,669 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:08:39,669 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-02 12:08:39,670 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:08:39,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:08:39,672 INFO L82 PathProgramCache]: Analyzing trace with hash -2143192221, now seen corresponding path program 1 times [2020-12-02 12:08:39,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:08:39,672 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119412270] [2020-12-02 12:08:39,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:08:39,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:08:39,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 12:08:39,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119412270] [2020-12-02 12:08:39,829 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:08:39,829 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-02 12:08:39,829 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648714798] [2020-12-02 12:08:39,830 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-02 12:08:39,830 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:08:39,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-02 12:08:39,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-02 12:08:39,832 INFO L87 Difference]: Start difference. First operand 750 states and 2414 transitions. Second operand 6 states. [2020-12-02 12:08:39,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:08:39,928 INFO L93 Difference]: Finished difference Result 1208 states and 3753 transitions. [2020-12-02 12:08:39,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-02 12:08:39,932 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-12-02 12:08:39,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:08:39,938 INFO L225 Difference]: With dead ends: 1208 [2020-12-02 12:08:39,939 INFO L226 Difference]: Without dead ends: 658 [2020-12-02 12:08:39,939 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-12-02 12:08:39,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2020-12-02 12:08:39,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 538. [2020-12-02 12:08:39,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 538 states. [2020-12-02 12:08:39,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 1664 transitions. [2020-12-02 12:08:39,979 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 1664 transitions. Word has length 13 [2020-12-02 12:08:39,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:08:39,980 INFO L481 AbstractCegarLoop]: Abstraction has 538 states and 1664 transitions. [2020-12-02 12:08:39,980 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-02 12:08:39,980 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 1664 transitions. [2020-12-02 12:08:39,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-02 12:08:39,982 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:08:39,982 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:08:39,982 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-02 12:08:39,982 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:08:39,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:08:39,983 INFO L82 PathProgramCache]: Analyzing trace with hash -1683713572, now seen corresponding path program 1 times [2020-12-02 12:08:39,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:08:39,984 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051329311] [2020-12-02 12:08:39,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:08:40,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:08:40,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 12:08:40,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051329311] [2020-12-02 12:08:40,102 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:08:40,102 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:08:40,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251443889] [2020-12-02 12:08:40,103 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:08:40,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:08:40,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:08:40,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:08:40,104 INFO L87 Difference]: Start difference. First operand 538 states and 1664 transitions. Second operand 5 states. [2020-12-02 12:08:40,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:08:40,172 INFO L93 Difference]: Finished difference Result 714 states and 2152 transitions. [2020-12-02 12:08:40,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-02 12:08:40,173 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-12-02 12:08:40,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:08:40,178 INFO L225 Difference]: With dead ends: 714 [2020-12-02 12:08:40,179 INFO L226 Difference]: Without dead ends: 658 [2020-12-02 12:08:40,179 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-02 12:08:40,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2020-12-02 12:08:40,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 498. [2020-12-02 12:08:40,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 498 states. [2020-12-02 12:08:40,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 1528 transitions. [2020-12-02 12:08:40,204 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 1528 transitions. Word has length 14 [2020-12-02 12:08:40,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:08:40,204 INFO L481 AbstractCegarLoop]: Abstraction has 498 states and 1528 transitions. [2020-12-02 12:08:40,204 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:08:40,204 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 1528 transitions. [2020-12-02 12:08:40,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-02 12:08:40,206 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:08:40,206 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:08:40,206 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-02 12:08:40,207 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:08:40,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:08:40,207 INFO L82 PathProgramCache]: Analyzing trace with hash -672340700, now seen corresponding path program 1 times [2020-12-02 12:08:40,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:08:40,208 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759804635] [2020-12-02 12:08:40,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:08:40,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:08:40,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 12:08:40,270 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759804635] [2020-12-02 12:08:40,270 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:08:40,270 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-02 12:08:40,271 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203742124] [2020-12-02 12:08:40,271 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:08:40,271 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:08:40,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:08:40,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:08:40,273 INFO L87 Difference]: Start difference. First operand 498 states and 1528 transitions. Second operand 5 states. [2020-12-02 12:08:40,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:08:40,338 INFO L93 Difference]: Finished difference Result 774 states and 2260 transitions. [2020-12-02 12:08:40,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-02 12:08:40,338 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-12-02 12:08:40,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:08:40,343 INFO L225 Difference]: With dead ends: 774 [2020-12-02 12:08:40,344 INFO L226 Difference]: Without dead ends: 602 [2020-12-02 12:08:40,344 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-02 12:08:40,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2020-12-02 12:08:40,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 442. [2020-12-02 12:08:40,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 442 states. [2020-12-02 12:08:40,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 1320 transitions. [2020-12-02 12:08:40,374 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 1320 transitions. Word has length 15 [2020-12-02 12:08:40,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:08:40,375 INFO L481 AbstractCegarLoop]: Abstraction has 442 states and 1320 transitions. [2020-12-02 12:08:40,375 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:08:40,375 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 1320 transitions. [2020-12-02 12:08:40,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-02 12:08:40,377 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:08:40,377 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:08:40,378 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-02 12:08:40,379 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:08:40,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:08:40,380 INFO L82 PathProgramCache]: Analyzing trace with hash -671268224, now seen corresponding path program 1 times [2020-12-02 12:08:40,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:08:40,380 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709401406] [2020-12-02 12:08:40,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:08:40,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:08:40,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 12:08:40,459 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709401406] [2020-12-02 12:08:40,460 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:08:40,460 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 12:08:40,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740892798] [2020-12-02 12:08:40,462 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-02 12:08:40,462 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:08:40,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-02 12:08:40,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-02 12:08:40,465 INFO L87 Difference]: Start difference. First operand 442 states and 1320 transitions. Second operand 3 states. [2020-12-02 12:08:40,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:08:40,486 INFO L93 Difference]: Finished difference Result 400 states and 1123 transitions. [2020-12-02 12:08:40,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-02 12:08:40,487 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-12-02 12:08:40,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:08:40,495 INFO L225 Difference]: With dead ends: 400 [2020-12-02 12:08:40,495 INFO L226 Difference]: Without dead ends: 400 [2020-12-02 12:08:40,496 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-02 12:08:40,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2020-12-02 12:08:40,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 400. [2020-12-02 12:08:40,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 400 states. [2020-12-02 12:08:40,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 1123 transitions. [2020-12-02 12:08:40,516 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 1123 transitions. Word has length 15 [2020-12-02 12:08:40,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:08:40,516 INFO L481 AbstractCegarLoop]: Abstraction has 400 states and 1123 transitions. [2020-12-02 12:08:40,517 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-02 12:08:40,518 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 1123 transitions. [2020-12-02 12:08:40,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-02 12:08:40,519 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:08:40,519 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:08:40,519 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-02 12:08:40,520 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:08:40,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:08:40,520 INFO L82 PathProgramCache]: Analyzing trace with hash 1195890947, now seen corresponding path program 1 times [2020-12-02 12:08:40,520 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:08:40,521 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266815697] [2020-12-02 12:08:40,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:08:40,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:08:40,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 12:08:40,627 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266815697] [2020-12-02 12:08:40,628 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:08:40,628 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:08:40,628 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794247182] [2020-12-02 12:08:40,629 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 12:08:40,629 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:08:40,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 12:08:40,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:08:40,631 INFO L87 Difference]: Start difference. First operand 400 states and 1123 transitions. Second operand 4 states. [2020-12-02 12:08:40,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:08:40,659 INFO L93 Difference]: Finished difference Result 309 states and 779 transitions. [2020-12-02 12:08:40,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-02 12:08:40,660 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-12-02 12:08:40,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:08:40,663 INFO L225 Difference]: With dead ends: 309 [2020-12-02 12:08:40,663 INFO L226 Difference]: Without dead ends: 309 [2020-12-02 12:08:40,665 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:08:40,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2020-12-02 12:08:40,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 309. [2020-12-02 12:08:40,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 309 states. [2020-12-02 12:08:40,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 779 transitions. [2020-12-02 12:08:40,678 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 779 transitions. Word has length 16 [2020-12-02 12:08:40,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:08:40,678 INFO L481 AbstractCegarLoop]: Abstraction has 309 states and 779 transitions. [2020-12-02 12:08:40,678 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 12:08:40,679 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 779 transitions. [2020-12-02 12:08:40,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-02 12:08:40,680 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:08:40,680 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:08:40,680 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-02 12:08:40,681 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:08:40,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:08:40,681 INFO L82 PathProgramCache]: Analyzing trace with hash 852842, now seen corresponding path program 1 times [2020-12-02 12:08:40,686 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:08:40,687 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385363624] [2020-12-02 12:08:40,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:08:40,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:08:40,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 12:08:40,767 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385363624] [2020-12-02 12:08:40,769 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:08:40,769 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-02 12:08:40,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232409187] [2020-12-02 12:08:40,770 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:08:40,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:08:40,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:08:40,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:08:40,771 INFO L87 Difference]: Start difference. First operand 309 states and 779 transitions. Second operand 5 states. [2020-12-02 12:08:40,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:08:40,808 INFO L93 Difference]: Finished difference Result 236 states and 571 transitions. [2020-12-02 12:08:40,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-02 12:08:40,809 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-12-02 12:08:40,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:08:40,811 INFO L225 Difference]: With dead ends: 236 [2020-12-02 12:08:40,812 INFO L226 Difference]: Without dead ends: 228 [2020-12-02 12:08:40,812 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:08:40,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2020-12-02 12:08:40,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 224. [2020-12-02 12:08:40,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2020-12-02 12:08:40,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 537 transitions. [2020-12-02 12:08:40,825 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 537 transitions. Word has length 17 [2020-12-02 12:08:40,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:08:40,826 INFO L481 AbstractCegarLoop]: Abstraction has 224 states and 537 transitions. [2020-12-02 12:08:40,827 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:08:40,827 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 537 transitions. [2020-12-02 12:08:40,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-02 12:08:40,828 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:08:40,828 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:08:40,828 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-02 12:08:40,829 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:08:40,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:08:40,829 INFO L82 PathProgramCache]: Analyzing trace with hash 2041241983, now seen corresponding path program 1 times [2020-12-02 12:08:40,830 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:08:40,830 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55343089] [2020-12-02 12:08:40,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:08:40,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:08:40,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 12:08:40,881 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55343089] [2020-12-02 12:08:40,881 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:08:40,882 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-02 12:08:40,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631529689] [2020-12-02 12:08:40,882 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:08:40,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:08:40,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:08:40,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:08:40,884 INFO L87 Difference]: Start difference. First operand 224 states and 537 transitions. Second operand 5 states. [2020-12-02 12:08:40,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:08:40,920 INFO L93 Difference]: Finished difference Result 276 states and 638 transitions. [2020-12-02 12:08:40,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-02 12:08:40,921 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-12-02 12:08:40,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:08:40,922 INFO L225 Difference]: With dead ends: 276 [2020-12-02 12:08:40,923 INFO L226 Difference]: Without dead ends: 162 [2020-12-02 12:08:40,923 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-02 12:08:40,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-12-02 12:08:40,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 158. [2020-12-02 12:08:40,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-12-02 12:08:40,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 338 transitions. [2020-12-02 12:08:40,929 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 338 transitions. Word has length 19 [2020-12-02 12:08:40,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:08:40,929 INFO L481 AbstractCegarLoop]: Abstraction has 158 states and 338 transitions. [2020-12-02 12:08:40,929 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:08:40,930 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 338 transitions. [2020-12-02 12:08:40,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-02 12:08:40,931 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:08:40,931 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:08:40,931 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-02 12:08:40,931 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:08:40,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:08:40,932 INFO L82 PathProgramCache]: Analyzing trace with hash 1152877885, now seen corresponding path program 2 times [2020-12-02 12:08:40,932 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:08:40,933 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522808574] [2020-12-02 12:08:40,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:08:40,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:08:41,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 12:08:41,010 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522808574] [2020-12-02 12:08:41,010 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:08:41,010 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-02 12:08:41,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837030961] [2020-12-02 12:08:41,011 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-02 12:08:41,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:08:41,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-02 12:08:41,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-12-02 12:08:41,014 INFO L87 Difference]: Start difference. First operand 158 states and 338 transitions. Second operand 6 states. [2020-12-02 12:08:41,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:08:41,052 INFO L93 Difference]: Finished difference Result 137 states and 298 transitions. [2020-12-02 12:08:41,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-02 12:08:41,053 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-12-02 12:08:41,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:08:41,055 INFO L225 Difference]: With dead ends: 137 [2020-12-02 12:08:41,055 INFO L226 Difference]: Without dead ends: 53 [2020-12-02 12:08:41,055 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-12-02 12:08:41,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-12-02 12:08:41,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-12-02 12:08:41,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-12-02 12:08:41,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 96 transitions. [2020-12-02 12:08:41,059 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 96 transitions. Word has length 19 [2020-12-02 12:08:41,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:08:41,059 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 96 transitions. [2020-12-02 12:08:41,059 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-02 12:08:41,059 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 96 transitions. [2020-12-02 12:08:41,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-02 12:08:41,060 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:08:41,060 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:08:41,060 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-02 12:08:41,060 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:08:41,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:08:41,064 INFO L82 PathProgramCache]: Analyzing trace with hash 1281872009, now seen corresponding path program 1 times [2020-12-02 12:08:41,064 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:08:41,064 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18452452] [2020-12-02 12:08:41,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:08:41,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:08:41,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 12:08:41,159 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18452452] [2020-12-02 12:08:41,159 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:08:41,159 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-02 12:08:41,159 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804105701] [2020-12-02 12:08:41,160 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-02 12:08:41,160 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:08:41,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-02 12:08:41,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-02 12:08:41,161 INFO L87 Difference]: Start difference. First operand 53 states and 96 transitions. Second operand 6 states. [2020-12-02 12:08:41,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:08:41,187 INFO L93 Difference]: Finished difference Result 52 states and 95 transitions. [2020-12-02 12:08:41,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-02 12:08:41,187 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2020-12-02 12:08:41,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:08:41,188 INFO L225 Difference]: With dead ends: 52 [2020-12-02 12:08:41,188 INFO L226 Difference]: Without dead ends: 0 [2020-12-02 12:08:41,189 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-12-02 12:08:41,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-02 12:08:41,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-02 12:08:41,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-02 12:08:41,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-02 12:08:41,190 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2020-12-02 12:08:41,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:08:41,190 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-02 12:08:41,190 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-02 12:08:41,190 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-02 12:08:41,191 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-02 12:08:41,191 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-02 12:08:41,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 12:08:41 BasicIcfg [2020-12-02 12:08:41,195 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-02 12:08:41,195 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-02 12:08:41,196 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-02 12:08:41,196 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-02 12:08:41,197 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:08:34" (3/4) ... [2020-12-02 12:08:41,202 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-02 12:08:41,212 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-12-02 12:08:41,212 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-12-02 12:08:41,212 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-12-02 12:08:41,212 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2020-12-02 12:08:41,221 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2020-12-02 12:08:41,221 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-02 12:08:41,221 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-02 12:08:41,222 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-02 12:08:41,268 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-12-02 12:08:41,268 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-02 12:08:41,270 INFO L168 Benchmark]: Toolchain (without parser) took 8289.64 ms. Allocated memory was 44.0 MB in the beginning and 151.0 MB in the end (delta: 107.0 MB). Free memory was 20.2 MB in the beginning and 97.2 MB in the end (delta: -77.0 MB). Peak memory consumption was 30.9 MB. Max. memory is 16.1 GB. [2020-12-02 12:08:41,270 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 44.0 MB. Free memory is still 24.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 12:08:41,271 INFO L168 Benchmark]: CACSL2BoogieTranslator took 750.22 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 19.9 MB in the beginning and 32.7 MB in the end (delta: -12.8 MB). Peak memory consumption was 10.4 MB. Max. memory is 16.1 GB. [2020-12-02 12:08:41,272 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.27 ms. Allocated memory is still 54.5 MB. Free memory was 32.5 MB in the beginning and 30.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 12:08:41,273 INFO L168 Benchmark]: Boogie Preprocessor took 29.56 ms. Allocated memory is still 54.5 MB. Free memory was 30.7 MB in the beginning and 29.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 12:08:41,273 INFO L168 Benchmark]: RCFGBuilder took 630.33 ms. Allocated memory is still 54.5 MB. Free memory was 29.1 MB in the beginning and 33.5 MB in the end (delta: -4.4 MB). Peak memory consumption was 8.1 MB. Max. memory is 16.1 GB. [2020-12-02 12:08:41,274 INFO L168 Benchmark]: TraceAbstraction took 6740.05 ms. Allocated memory was 54.5 MB in the beginning and 151.0 MB in the end (delta: 96.5 MB). Free memory was 33.0 MB in the beginning and 100.3 MB in the end (delta: -67.3 MB). Peak memory consumption was 29.1 MB. Max. memory is 16.1 GB. [2020-12-02 12:08:41,275 INFO L168 Benchmark]: Witness Printer took 73.07 ms. Allocated memory is still 151.0 MB. Free memory was 100.3 MB in the beginning and 97.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 12:08:41,279 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 44.0 MB. Free memory is still 24.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 750.22 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 19.9 MB in the beginning and 32.7 MB in the end (delta: -12.8 MB). Peak memory consumption was 10.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 58.27 ms. Allocated memory is still 54.5 MB. Free memory was 32.5 MB in the beginning and 30.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 29.56 ms. Allocated memory is still 54.5 MB. Free memory was 30.7 MB in the beginning and 29.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 630.33 ms. Allocated memory is still 54.5 MB. Free memory was 29.1 MB in the beginning and 33.5 MB in the end (delta: -4.4 MB). Peak memory consumption was 8.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6740.05 ms. Allocated memory was 54.5 MB in the beginning and 151.0 MB in the end (delta: 96.5 MB). Free memory was 33.0 MB in the beginning and 100.3 MB in the end (delta: -67.3 MB). Peak memory consumption was 29.1 MB. Max. memory is 16.1 GB. * Witness Printer took 73.07 ms. Allocated memory is still 151.0 MB. Free memory was 100.3 MB in the beginning and 97.2 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 1211 VarBasedMoverChecksPositive, 49 VarBasedMoverChecksNegative, 10 SemBasedMoverChecksPositive, 39 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 114 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.6s, 96 PlacesBefore, 39 PlacesAfterwards, 85 TransitionsBefore, 27 TransitionsAfterwards, 1866 CoEnabledTransitionPairs, 5 FixpointIterations, 17 TrivialSequentialCompositions, 45 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 1 ChoiceCompositions, 70 TotalNumberOfCompositions, 3411 MoverChecksTotal - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 84 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.5s, OverallIterations: 12, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.7s, HoareTripleCheckerStatistics: 304 SDtfs, 351 SDslu, 509 SDs, 0 SdLazy, 181 SolverSat, 45 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 56 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=850occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 12 MinimizatonAttempts, 600 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 182 NumberOfCodeBlocks, 182 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 170 ConstructedInterpolants, 0 QuantifiedInterpolants, 10614 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...