./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe003_tso.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_276b5bc2-f654-42b3-b206-3262ac899113/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_276b5bc2-f654-42b3-b206-3262ac899113/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_276b5bc2-f654-42b3-b206-3262ac899113/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_276b5bc2-f654-42b3-b206-3262ac899113/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe003_tso.oepc.i -s /tmp/vcloud-vcloud-master/worker/run_dir_276b5bc2-f654-42b3-b206-3262ac899113/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_276b5bc2-f654-42b3-b206-3262ac899113/bin/uautomizer --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 bc21758e77fe8daef5c30ddb66e2ae4ecd287b02 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 03:20:04,371 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:20:04,382 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:20:04,444 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:20:04,445 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:20:04,450 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:20:04,454 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:20:04,460 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:20:04,463 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:20:04,469 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:20:04,470 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:20:04,472 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:20:04,472 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:20:04,476 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:20:04,477 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:20:04,479 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:20:04,480 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:20:04,482 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:20:04,487 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:20:04,494 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:20:04,496 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:20:04,497 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:20:04,500 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:20:04,501 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:20:04,509 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:20:04,510 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:20:04,510 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:20:04,512 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:20:04,513 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:20:04,514 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:20:04,515 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:20:04,516 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:20:04,518 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:20:04,519 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:20:04,520 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:20:04,521 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:20:04,522 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:20:04,522 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:20:04,522 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:20:04,523 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:20:04,524 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:20:04,526 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_276b5bc2-f654-42b3-b206-3262ac899113/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-28 03:20:04,562 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:20:04,562 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:20:04,564 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:20:04,565 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:20:04,565 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:20:04,565 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:20:04,565 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:20:04,566 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:20:04,566 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:20:04,566 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:20:04,567 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 03:20:04,568 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:20:04,568 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 03:20:04,568 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:20:04,568 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:20:04,569 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:20:04,569 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 03:20:04,569 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:20:04,569 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:20:04,570 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:20:04,570 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:20:04,570 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:20:04,571 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:20:04,571 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:20:04,571 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 03:20:04,571 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:20:04,572 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 03:20:04,572 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 03:20:04,572 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:20:04,572 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:/tmp/vcloud-vcloud-master/worker/run_dir_276b5bc2-f654-42b3-b206-3262ac899113/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_276b5bc2-f654-42b3-b206-3262ac899113/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bc21758e77fe8daef5c30ddb66e2ae4ecd287b02 [2020-11-28 03:20:04,857 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:20:04,881 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:20:04,885 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:20:04,886 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:20:04,888 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:20:04,889 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_276b5bc2-f654-42b3-b206-3262ac899113/bin/uautomizer/../../sv-benchmarks/c/pthread-wmm/safe003_tso.oepc.i [2020-11-28 03:20:04,979 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_276b5bc2-f654-42b3-b206-3262ac899113/bin/uautomizer/data/99d43a4e9/7ceb3c765b7c42558c62a143cc5c1fea/FLAGd74314914 [2020-11-28 03:20:05,487 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:20:05,487 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_276b5bc2-f654-42b3-b206-3262ac899113/sv-benchmarks/c/pthread-wmm/safe003_tso.oepc.i [2020-11-28 03:20:05,505 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_276b5bc2-f654-42b3-b206-3262ac899113/bin/uautomizer/data/99d43a4e9/7ceb3c765b7c42558c62a143cc5c1fea/FLAGd74314914 [2020-11-28 03:20:05,791 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_276b5bc2-f654-42b3-b206-3262ac899113/bin/uautomizer/data/99d43a4e9/7ceb3c765b7c42558c62a143cc5c1fea [2020-11-28 03:20:05,794 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:20:05,795 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:20:05,799 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:20:05,800 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:20:05,803 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:20:05,805 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:20:05" (1/1) ... [2020-11-28 03:20:05,807 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6579f982 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:05, skipping insertion in model container [2020-11-28 03:20:05,808 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:20:05" (1/1) ... [2020-11-28 03:20:05,814 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:20:05,881 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:20:06,304 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:20:06,313 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:20:06,392 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:20:06,497 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:20:06,497 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:06 WrapperNode [2020-11-28 03:20:06,497 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:20:06,498 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:20:06,499 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:20:06,499 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:20:06,507 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:06" (1/1) ... [2020-11-28 03:20:06,524 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:06" (1/1) ... [2020-11-28 03:20:06,545 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:20:06,545 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:20:06,545 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:20:06,546 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:20:06,554 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:06" (1/1) ... [2020-11-28 03:20:06,554 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:06" (1/1) ... [2020-11-28 03:20:06,557 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:06" (1/1) ... [2020-11-28 03:20:06,558 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:06" (1/1) ... [2020-11-28 03:20:06,565 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:06" (1/1) ... [2020-11-28 03:20:06,567 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:06" (1/1) ... [2020-11-28 03:20:06,569 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:06" (1/1) ... [2020-11-28 03:20:06,572 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:20:06,573 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:20:06,573 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:20:06,573 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:20:06,574 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:06" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_276b5bc2-f654-42b3-b206-3262ac899113/bin/uautomizer/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 [2020-11-28 03:20:06,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 03:20:06,654 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-28 03:20:06,654 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:20:06,654 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 03:20:06,654 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-28 03:20:06,654 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-28 03:20:06,654 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-28 03:20:06,654 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-28 03:20:06,655 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-28 03:20:06,655 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-28 03:20:06,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 03:20:06,655 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-28 03:20:06,655 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:20:06,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:20:06,658 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-28 03:20:07,063 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:20:07,063 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-28 03:20:07,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:20:07 BoogieIcfgContainer [2020-11-28 03:20:07,065 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:20:07,066 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:20:07,066 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:20:07,069 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:20:07,070 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:20:05" (1/3) ... [2020-11-28 03:20:07,070 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79d5aa0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:20:07, skipping insertion in model container [2020-11-28 03:20:07,070 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:06" (2/3) ... [2020-11-28 03:20:07,071 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79d5aa0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:20:07, skipping insertion in model container [2020-11-28 03:20:07,071 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:20:07" (3/3) ... [2020-11-28 03:20:07,072 INFO L111 eAbstractionObserver]: Analyzing ICFG safe003_tso.oepc.i [2020-11-28 03:20:07,082 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-28 03:20:07,083 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:20:07,087 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 03:20:07,087 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-28 03:20:07,111 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:20:07,111 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:20:07,111 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:20:07,111 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:20:07,112 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:20:07,112 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:20:07,113 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:20:07,113 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:20:07,113 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:20:07,113 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:20:07,114 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:20:07,114 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:20:07,114 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:20:07,114 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:20:07,115 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:20:07,115 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:20:07,115 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:20:07,115 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:20:07,117 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:20:07,118 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:20:07,118 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:20:07,118 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:20:07,123 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:20:07,124 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:20:07,124 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:20:07,124 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:20:07,127 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:20:07,127 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:20:07,127 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:20:07,127 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:20:07,133 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-28 03:20:07,142 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-28 03:20:07,162 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:20:07,163 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 03:20:07,163 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:20:07,163 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:20:07,163 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:20:07,163 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:20:07,163 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:20:07,163 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:20:07,174 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-28 03:20:07,176 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 86 places, 79 transitions, 173 flow [2020-11-28 03:20:07,179 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 86 places, 79 transitions, 173 flow [2020-11-28 03:20:07,181 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 86 places, 79 transitions, 173 flow [2020-11-28 03:20:07,248 INFO L129 PetriNetUnfolder]: 3/76 cut-off events. [2020-11-28 03:20:07,249 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-28 03:20:07,252 INFO L80 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 76 events. 3/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 57 event pairs, 0 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2020-11-28 03:20:07,256 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2020-11-28 03:20:09,547 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-11-28 03:20:09,651 INFO L131 LiptonReduction]: Checked pairs total: 2779 [2020-11-28 03:20:09,651 INFO L133 LiptonReduction]: Total number of compositions: 70 [2020-11-28 03:20:09,661 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-11-28 03:20:09,704 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-11-28 03:20:09,706 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-11-28 03:20:09,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-28 03:20:09,713 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:20:09,713 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:20:09,714 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:20:09,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:09,720 INFO L82 PathProgramCache]: Analyzing trace with hash -460323677, now seen corresponding path program 1 times [2020-11-28 03:20:09,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:20:09,729 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678241346] [2020-11-28 03:20:09,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:20:09,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:09,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:20:09,879 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678241346] [2020-11-28 03:20:09,880 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:20:09,880 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 03:20:09,881 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441862523] [2020-11-28 03:20:09,884 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 03:20:09,885 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:20:09,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 03:20:09,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 03:20:09,900 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-11-28 03:20:09,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:20:09,929 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-11-28 03:20:09,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 03:20:09,930 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-11-28 03:20:09,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:20:09,946 INFO L225 Difference]: With dead ends: 362 [2020-11-28 03:20:09,946 INFO L226 Difference]: Without dead ends: 298 [2020-11-28 03:20:09,947 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 [2020-11-28 03:20:09,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-11-28 03:20:10,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-11-28 03:20:10,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-11-28 03:20:10,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-11-28 03:20:10,018 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-11-28 03:20:10,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:20:10,019 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-11-28 03:20:10,019 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 03:20:10,019 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-11-28 03:20:10,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-28 03:20:10,021 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:20:10,021 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:20:10,021 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 03:20:10,021 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:20:10,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:10,022 INFO L82 PathProgramCache]: Analyzing trace with hash -1385173359, now seen corresponding path program 1 times [2020-11-28 03:20:10,022 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:20:10,023 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305838748] [2020-11-28 03:20:10,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:20:10,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:10,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:20:10,210 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305838748] [2020-11-28 03:20:10,211 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:20:10,211 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:20:10,211 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853669520] [2020-11-28 03:20:10,212 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:20:10,212 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:20:10,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:20:10,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:20:10,214 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 5 states. [2020-11-28 03:20:10,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:20:10,278 INFO L93 Difference]: Finished difference Result 330 states and 912 transitions. [2020-11-28 03:20:10,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 03:20:10,278 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-11-28 03:20:10,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:20:10,282 INFO L225 Difference]: With dead ends: 330 [2020-11-28 03:20:10,282 INFO L226 Difference]: Without dead ends: 266 [2020-11-28 03:20:10,283 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 [2020-11-28 03:20:10,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-11-28 03:20:10,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2020-11-28 03:20:10,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-11-28 03:20:10,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 752 transitions. [2020-11-28 03:20:10,324 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 752 transitions. Word has length 9 [2020-11-28 03:20:10,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:20:10,324 INFO L481 AbstractCegarLoop]: Abstraction has 266 states and 752 transitions. [2020-11-28 03:20:10,324 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:20:10,324 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 752 transitions. [2020-11-28 03:20:10,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 03:20:10,326 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:20:10,326 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:20:10,326 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 03:20:10,327 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:20:10,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:10,327 INFO L82 PathProgramCache]: Analyzing trace with hash 9178769, now seen corresponding path program 1 times [2020-11-28 03:20:10,327 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:20:10,328 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445256678] [2020-11-28 03:20:10,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:20:10,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:10,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:20:10,457 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445256678] [2020-11-28 03:20:10,457 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:20:10,457 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:20:10,458 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316831035] [2020-11-28 03:20:10,458 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:20:10,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:20:10,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:20:10,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:20:10,460 INFO L87 Difference]: Start difference. First operand 266 states and 752 transitions. Second operand 5 states. [2020-11-28 03:20:10,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:20:10,542 INFO L93 Difference]: Finished difference Result 282 states and 760 transitions. [2020-11-28 03:20:10,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 03:20:10,543 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-11-28 03:20:10,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:20:10,545 INFO L225 Difference]: With dead ends: 282 [2020-11-28 03:20:10,546 INFO L226 Difference]: Without dead ends: 234 [2020-11-28 03:20:10,546 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 [2020-11-28 03:20:10,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2020-11-28 03:20:10,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2020-11-28 03:20:10,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2020-11-28 03:20:10,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 640 transitions. [2020-11-28 03:20:10,576 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 640 transitions. Word has length 10 [2020-11-28 03:20:10,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:20:10,576 INFO L481 AbstractCegarLoop]: Abstraction has 234 states and 640 transitions. [2020-11-28 03:20:10,576 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:20:10,576 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 640 transitions. [2020-11-28 03:20:10,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 03:20:10,581 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:20:10,581 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:20:10,581 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 03:20:10,581 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:20:10,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:10,582 INFO L82 PathProgramCache]: Analyzing trace with hash 284483281, now seen corresponding path program 1 times [2020-11-28 03:20:10,582 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:20:10,583 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853103754] [2020-11-28 03:20:10,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:20:10,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:10,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:20:10,720 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853103754] [2020-11-28 03:20:10,721 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:20:10,721 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:20:10,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43870974] [2020-11-28 03:20:10,721 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:20:10,722 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:20:10,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:20:10,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:20:10,722 INFO L87 Difference]: Start difference. First operand 234 states and 640 transitions. Second operand 5 states. [2020-11-28 03:20:10,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:20:10,800 INFO L93 Difference]: Finished difference Result 250 states and 660 transitions. [2020-11-28 03:20:10,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 03:20:10,801 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-11-28 03:20:10,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:20:10,803 INFO L225 Difference]: With dead ends: 250 [2020-11-28 03:20:10,803 INFO L226 Difference]: Without dead ends: 218 [2020-11-28 03:20:10,803 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 [2020-11-28 03:20:10,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-11-28 03:20:10,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-11-28 03:20:10,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-11-28 03:20:10,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 588 transitions. [2020-11-28 03:20:10,819 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 588 transitions. Word has length 11 [2020-11-28 03:20:10,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:20:10,819 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 588 transitions. [2020-11-28 03:20:10,820 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:20:10,820 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 588 transitions. [2020-11-28 03:20:10,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-28 03:20:10,822 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:20:10,823 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:20:10,823 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 03:20:10,823 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:20:10,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:10,825 INFO L82 PathProgramCache]: Analyzing trace with hash 595693024, now seen corresponding path program 1 times [2020-11-28 03:20:10,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:20:10,825 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959776523] [2020-11-28 03:20:10,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:20:10,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:10,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:20:10,922 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959776523] [2020-11-28 03:20:10,922 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:20:10,923 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:20:10,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277854625] [2020-11-28 03:20:10,923 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:20:10,923 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:20:10,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:20:10,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:20:10,924 INFO L87 Difference]: Start difference. First operand 218 states and 588 transitions. Second operand 5 states. [2020-11-28 03:20:10,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:20:10,994 INFO L93 Difference]: Finished difference Result 294 states and 780 transitions. [2020-11-28 03:20:10,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 03:20:10,995 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-11-28 03:20:10,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:20:10,997 INFO L225 Difference]: With dead ends: 294 [2020-11-28 03:20:10,997 INFO L226 Difference]: Without dead ends: 206 [2020-11-28 03:20:10,997 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-28 03:20:10,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-11-28 03:20:11,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2020-11-28 03:20:11,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-11-28 03:20:11,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 546 transitions. [2020-11-28 03:20:11,005 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 546 transitions. Word has length 12 [2020-11-28 03:20:11,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:20:11,006 INFO L481 AbstractCegarLoop]: Abstraction has 206 states and 546 transitions. [2020-11-28 03:20:11,006 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:20:11,006 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 546 transitions. [2020-11-28 03:20:11,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-28 03:20:11,007 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:20:11,007 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:20:11,007 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-28 03:20:11,007 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:20:11,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:11,008 INFO L82 PathProgramCache]: Analyzing trace with hash -1291780610, now seen corresponding path program 1 times [2020-11-28 03:20:11,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:20:11,008 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378210340] [2020-11-28 03:20:11,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:20:11,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:11,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:20:11,077 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378210340] [2020-11-28 03:20:11,077 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:20:11,077 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:20:11,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632175222] [2020-11-28 03:20:11,078 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:20:11,078 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:20:11,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:20:11,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:20:11,079 INFO L87 Difference]: Start difference. First operand 206 states and 546 transitions. Second operand 5 states. [2020-11-28 03:20:11,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:20:11,137 INFO L93 Difference]: Finished difference Result 356 states and 901 transitions. [2020-11-28 03:20:11,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 03:20:11,137 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-11-28 03:20:11,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:20:11,139 INFO L225 Difference]: With dead ends: 356 [2020-11-28 03:20:11,139 INFO L226 Difference]: Without dead ends: 218 [2020-11-28 03:20:11,140 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-28 03:20:11,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-11-28 03:20:11,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 170. [2020-11-28 03:20:11,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-11-28 03:20:11,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 420 transitions. [2020-11-28 03:20:11,147 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 420 transitions. Word has length 13 [2020-11-28 03:20:11,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:20:11,147 INFO L481 AbstractCegarLoop]: Abstraction has 170 states and 420 transitions. [2020-11-28 03:20:11,147 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:20:11,148 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 420 transitions. [2020-11-28 03:20:11,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-28 03:20:11,148 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:20:11,148 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:20:11,149 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-28 03:20:11,149 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:20:11,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:11,149 INFO L82 PathProgramCache]: Analyzing trace with hash 370300484, now seen corresponding path program 1 times [2020-11-28 03:20:11,149 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:20:11,150 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064764097] [2020-11-28 03:20:11,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:20:11,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:11,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:20:11,210 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064764097] [2020-11-28 03:20:11,210 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:20:11,210 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:20:11,211 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965057862] [2020-11-28 03:20:11,211 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:20:11,211 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:20:11,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:20:11,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:20:11,212 INFO L87 Difference]: Start difference. First operand 170 states and 420 transitions. Second operand 5 states. [2020-11-28 03:20:11,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:20:11,267 INFO L93 Difference]: Finished difference Result 222 states and 534 transitions. [2020-11-28 03:20:11,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 03:20:11,268 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-11-28 03:20:11,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:20:11,269 INFO L225 Difference]: With dead ends: 222 [2020-11-28 03:20:11,269 INFO L226 Difference]: Without dead ends: 102 [2020-11-28 03:20:11,269 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-28 03:20:11,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-11-28 03:20:11,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2020-11-28 03:20:11,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-11-28 03:20:11,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 228 transitions. [2020-11-28 03:20:11,272 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 228 transitions. Word has length 13 [2020-11-28 03:20:11,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:20:11,272 INFO L481 AbstractCegarLoop]: Abstraction has 102 states and 228 transitions. [2020-11-28 03:20:11,272 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:20:11,272 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 228 transitions. [2020-11-28 03:20:11,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-28 03:20:11,273 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:20:11,273 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:20:11,273 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-28 03:20:11,273 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:20:11,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:11,273 INFO L82 PathProgramCache]: Analyzing trace with hash 255451346, now seen corresponding path program 1 times [2020-11-28 03:20:11,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:20:11,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633249872] [2020-11-28 03:20:11,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:20:11,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:11,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:20:11,345 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633249872] [2020-11-28 03:20:11,345 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:20:11,346 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:20:11,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004710797] [2020-11-28 03:20:11,346 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:20:11,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:20:11,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:20:11,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:20:11,347 INFO L87 Difference]: Start difference. First operand 102 states and 228 transitions. Second operand 4 states. [2020-11-28 03:20:11,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:20:11,384 INFO L93 Difference]: Finished difference Result 94 states and 208 transitions. [2020-11-28 03:20:11,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:20:11,384 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-11-28 03:20:11,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:20:11,384 INFO L225 Difference]: With dead ends: 94 [2020-11-28 03:20:11,384 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 03:20:11,385 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:20:11,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 03:20:11,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 03:20:11,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 03:20:11,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 03:20:11,385 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-11-28 03:20:11,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:20:11,385 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:20:11,386 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:20:11,386 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 03:20:11,386 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 03:20:11,386 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-28 03:20:11,389 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:20:11 BasicIcfg [2020-11-28 03:20:11,389 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:20:11,390 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:20:11,390 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:20:11,391 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:20:11,391 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:20:07" (3/4) ... [2020-11-28 03:20:11,397 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 03:20:11,403 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-11-28 03:20:11,403 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-11-28 03:20:11,403 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-11-28 03:20:11,409 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-11-28 03:20:11,409 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-28 03:20:11,409 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 03:20:11,410 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 03:20:11,482 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_276b5bc2-f654-42b3-b206-3262ac899113/bin/uautomizer/witness.graphml [2020-11-28 03:20:11,482 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:20:11,484 INFO L168 Benchmark]: Toolchain (without parser) took 5688.14 ms. Allocated memory was 86.0 MB in the beginning and 142.6 MB in the end (delta: 56.6 MB). Free memory was 50.4 MB in the beginning and 111.0 MB in the end (delta: -60.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:20:11,484 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 86.0 MB. Free memory was 55.8 MB in the beginning and 55.8 MB in the end (delta: 29.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:20:11,485 INFO L168 Benchmark]: CACSL2BoogieTranslator took 698.27 ms. Allocated memory was 86.0 MB in the beginning and 115.3 MB in the end (delta: 29.4 MB). Free memory was 50.2 MB in the beginning and 70.4 MB in the end (delta: -20.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:20:11,485 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.26 ms. Allocated memory is still 115.3 MB. Free memory was 70.4 MB in the beginning and 68.5 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:20:11,485 INFO L168 Benchmark]: Boogie Preprocessor took 26.58 ms. Allocated memory is still 115.3 MB. Free memory was 68.5 MB in the beginning and 67.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:20:11,486 INFO L168 Benchmark]: RCFGBuilder took 492.22 ms. Allocated memory is still 115.3 MB. Free memory was 67.0 MB in the beginning and 45.4 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2020-11-28 03:20:11,486 INFO L168 Benchmark]: TraceAbstraction took 4323.47 ms. Allocated memory was 115.3 MB in the beginning and 142.6 MB in the end (delta: 27.3 MB). Free memory was 44.7 MB in the beginning and 114.1 MB in the end (delta: -69.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:20:11,487 INFO L168 Benchmark]: Witness Printer took 92.28 ms. Allocated memory is still 142.6 MB. Free memory was 114.1 MB in the beginning and 111.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:20:11,489 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 86.0 MB. Free memory was 55.8 MB in the beginning and 55.8 MB in the end (delta: 29.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 698.27 ms. Allocated memory was 86.0 MB in the beginning and 115.3 MB in the end (delta: 29.4 MB). Free memory was 50.2 MB in the beginning and 70.4 MB in the end (delta: -20.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 46.26 ms. Allocated memory is still 115.3 MB. Free memory was 70.4 MB in the beginning and 68.5 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 26.58 ms. Allocated memory is still 115.3 MB. Free memory was 68.5 MB in the beginning and 67.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 492.22 ms. Allocated memory is still 115.3 MB. Free memory was 67.0 MB in the beginning and 45.4 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4323.47 ms. Allocated memory was 115.3 MB in the beginning and 142.6 MB in the end (delta: 27.3 MB). Free memory was 44.7 MB in the beginning and 114.1 MB in the end (delta: -69.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 92.28 ms. Allocated memory is still 142.6 MB. Free memory was 114.1 MB in the beginning and 111.0 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 963 VarBasedMoverChecksPositive, 32 VarBasedMoverChecksNegative, 6 SemBasedMoverChecksPositive, 26 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 68 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.4s, 86 PlacesBefore, 32 PlacesAfterwards, 79 TransitionsBefore, 23 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 5 FixpointIterations, 18 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 2 ChoiceCompositions, 70 TotalNumberOfCompositions, 2779 MoverChecksTotal - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 77 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.2s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.5s, HoareTripleCheckerStatistics: 181 SDtfs, 223 SDslu, 328 SDs, 0 SdLazy, 131 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 40 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred 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: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 48 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 91 NumberOfCodeBlocks, 91 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 83 ConstructedInterpolants, 0 QuantifiedInterpolants, 3140 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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...