./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe017_tso.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 69874e26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_541c363e-cf19-44b2-be42-4899ceb86495/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_541c363e-cf19-44b2-be42-4899ceb86495/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_541c363e-cf19-44b2-be42-4899ceb86495/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_541c363e-cf19-44b2-be42-4899ceb86495/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe017_tso.oepc.i -s /tmp/vcloud-vcloud-master/worker/run_dir_541c363e-cf19-44b2-be42-4899ceb86495/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_541c363e-cf19-44b2-be42-4899ceb86495/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 9900832e3eb275a51766e54e18663ea088e173f4 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-69874e2 [2020-12-01 15:25:10,409 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 15:25:10,412 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 15:25:10,499 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 15:25:10,500 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 15:25:10,505 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 15:25:10,511 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 15:25:10,515 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 15:25:10,524 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 15:25:10,527 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 15:25:10,529 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 15:25:10,532 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 15:25:10,532 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 15:25:10,534 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 15:25:10,536 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 15:25:10,538 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 15:25:10,539 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 15:25:10,552 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 15:25:10,555 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 15:25:10,558 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 15:25:10,560 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 15:25:10,562 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 15:25:10,564 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 15:25:10,566 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 15:25:10,574 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 15:25:10,575 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 15:25:10,575 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 15:25:10,576 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 15:25:10,577 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 15:25:10,578 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 15:25:10,579 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 15:25:10,580 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 15:25:10,581 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 15:25:10,582 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 15:25:10,583 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 15:25:10,584 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 15:25:10,585 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 15:25:10,585 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 15:25:10,586 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 15:25:10,596 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 15:25:10,599 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 15:25:10,600 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_541c363e-cf19-44b2-be42-4899ceb86495/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-01 15:25:10,630 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 15:25:10,630 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 15:25:10,632 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 15:25:10,632 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 15:25:10,632 INFO L138 SettingsManager]: * Use SBE=true [2020-12-01 15:25:10,633 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 15:25:10,633 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 15:25:10,633 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-01 15:25:10,633 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 15:25:10,634 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 15:25:10,634 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-01 15:25:10,634 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 15:25:10,635 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-01 15:25:10,635 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 15:25:10,635 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 15:25:10,636 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 15:25:10,636 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-01 15:25:10,636 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 15:25:10,636 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-01 15:25:10,637 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 15:25:10,637 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-01 15:25:10,637 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 15:25:10,638 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 15:25:10,638 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 15:25:10,638 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-01 15:25:10,639 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-01 15:25:10,639 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-01 15:25:10,639 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-01 15:25:10,639 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-01 15:25:10,640 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_541c363e-cf19-44b2-be42-4899ceb86495/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_541c363e-cf19-44b2-be42-4899ceb86495/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9900832e3eb275a51766e54e18663ea088e173f4 [2020-12-01 15:25:10,957 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 15:25:10,994 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 15:25:10,999 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 15:25:11,001 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 15:25:11,004 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 15:25:11,006 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_541c363e-cf19-44b2-be42-4899ceb86495/bin/uautomizer/../../sv-benchmarks/c/pthread-wmm/safe017_tso.oepc.i [2020-12-01 15:25:11,098 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_541c363e-cf19-44b2-be42-4899ceb86495/bin/uautomizer/data/217b5e20b/e82ffef8d22a4e24b2eac2494c36f609/FLAGb88fc6116 [2020-12-01 15:25:11,820 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 15:25:11,821 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_541c363e-cf19-44b2-be42-4899ceb86495/sv-benchmarks/c/pthread-wmm/safe017_tso.oepc.i [2020-12-01 15:25:11,849 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_541c363e-cf19-44b2-be42-4899ceb86495/bin/uautomizer/data/217b5e20b/e82ffef8d22a4e24b2eac2494c36f609/FLAGb88fc6116 [2020-12-01 15:25:12,069 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_541c363e-cf19-44b2-be42-4899ceb86495/bin/uautomizer/data/217b5e20b/e82ffef8d22a4e24b2eac2494c36f609 [2020-12-01 15:25:12,080 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 15:25:12,082 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 15:25:12,087 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 15:25:12,088 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 15:25:12,092 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 15:25:12,097 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:25:12" (1/1) ... [2020-12-01 15:25:12,100 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5263c976 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:25:12, skipping insertion in model container [2020-12-01 15:25:12,101 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:25:12" (1/1) ... [2020-12-01 15:25:12,110 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 15:25:12,185 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 15:25:12,640 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:25:12,650 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 15:25:12,713 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:25:12,837 INFO L208 MainTranslator]: Completed translation [2020-12-01 15:25:12,839 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:25:12 WrapperNode [2020-12-01 15:25:12,839 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 15:25:12,841 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 15:25:12,841 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 15:25:12,842 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 15:25:12,852 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:25:12" (1/1) ... [2020-12-01 15:25:12,879 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:25:12" (1/1) ... [2020-12-01 15:25:12,910 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 15:25:12,911 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 15:25:12,911 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 15:25:12,912 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 15:25:12,922 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:25:12" (1/1) ... [2020-12-01 15:25:12,923 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:25:12" (1/1) ... [2020-12-01 15:25:12,941 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:25:12" (1/1) ... [2020-12-01 15:25:12,941 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:25:12" (1/1) ... [2020-12-01 15:25:12,947 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:25:12" (1/1) ... [2020-12-01 15:25:12,950 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:25:12" (1/1) ... [2020-12-01 15:25:12,952 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:25:12" (1/1) ... [2020-12-01 15:25:12,962 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 15:25:12,974 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 15:25:12,974 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 15:25:12,974 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 15:25:12,976 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:25:12" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_541c363e-cf19-44b2-be42-4899ceb86495/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 [2020-12-01 15:25:13,068 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-01 15:25:13,068 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-01 15:25:13,068 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 15:25:13,069 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-01 15:25:13,069 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-01 15:25:13,069 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-01 15:25:13,069 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-01 15:25:13,070 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-01 15:25:13,070 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-12-01 15:25:13,070 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-12-01 15:25:13,070 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-01 15:25:13,070 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-01 15:25:13,071 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 15:25:13,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 15:25:13,073 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-12-01 15:25:13,483 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 15:25:13,483 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-12-01 15:25:13,486 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:25:13 BoogieIcfgContainer [2020-12-01 15:25:13,486 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 15:25:13,488 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-01 15:25:13,488 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-01 15:25:13,493 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-01 15:25:13,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 03:25:12" (1/3) ... [2020-12-01 15:25:13,494 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75780729 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 03:25:13, skipping insertion in model container [2020-12-01 15:25:13,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:25:12" (2/3) ... [2020-12-01 15:25:13,495 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75780729 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 03:25:13, skipping insertion in model container [2020-12-01 15:25:13,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:25:13" (3/3) ... [2020-12-01 15:25:13,497 INFO L111 eAbstractionObserver]: Analyzing ICFG safe017_tso.oepc.i [2020-12-01 15:25:13,515 WARN L169 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-01 15:25:13,515 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-01 15:25:13,519 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-01 15:25:13,520 INFO L354 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-01 15:25:13,559 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:25:13,560 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:25:13,560 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:25:13,560 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:25:13,561 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:25:13,561 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:25:13,561 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:25:13,561 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:25:13,562 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:25:13,562 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:25:13,563 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:25:13,563 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:25:13,566 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:25:13,567 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:25:13,567 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:25:13,567 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:25:13,568 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:25:13,568 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:25:13,568 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:25:13,568 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:25:13,569 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:25:13,569 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:25:13,569 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:25:13,569 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:25:13,570 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:25:13,570 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:25:13,571 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:25:13,571 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:25:13,571 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:25:13,571 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:25:13,572 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:25:13,572 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:25:13,573 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:25:13,573 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:25:13,573 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:25:13,573 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:25:13,576 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:25:13,576 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:25:13,576 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:25:13,577 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:25:13,588 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:25:13,588 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:25:13,588 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:25:13,589 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:25:13,594 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:25:13,594 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:25:13,595 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:25:13,595 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:25:13,600 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-01 15:25:13,614 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-01 15:25:13,640 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-01 15:25:13,640 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-01 15:25:13,640 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-01 15:25:13,641 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-01 15:25:13,641 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-01 15:25:13,641 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-01 15:25:13,641 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-01 15:25:13,641 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-01 15:25:13,657 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-01 15:25:13,660 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 83 places, 76 transitions, 167 flow [2020-12-01 15:25:13,663 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 83 places, 76 transitions, 167 flow [2020-12-01 15:25:13,666 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 83 places, 76 transitions, 167 flow [2020-12-01 15:25:13,742 INFO L129 PetriNetUnfolder]: 3/73 cut-off events. [2020-12-01 15:25:13,743 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-01 15:25:13,747 INFO L84 FinitePrefix]: Finished finitePrefix Result has 83 conditions, 73 events. 3/73 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 58 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 59. Up to 2 conditions per place. [2020-12-01 15:25:13,771 INFO L116 LiptonReduction]: Number of co-enabled transitions 1348 [2020-12-01 15:25:16,350 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-12-01 15:25:16,529 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-12-01 15:25:17,727 WARN L197 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2020-12-01 15:25:17,859 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-12-01 15:25:18,062 WARN L197 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2020-12-01 15:25:18,249 INFO L131 LiptonReduction]: Checked pairs total: 2406 [2020-12-01 15:25:18,249 INFO L133 LiptonReduction]: Total number of compositions: 68 [2020-12-01 15:25:18,256 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-12-01 15:25:18,287 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 274 states. [2020-12-01 15:25:18,289 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states. [2020-12-01 15:25:18,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-01 15:25:18,297 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:25:18,298 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:25:18,298 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:25:18,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:25:18,305 INFO L82 PathProgramCache]: Analyzing trace with hash 1461766860, now seen corresponding path program 1 times [2020-12-01 15:25:18,316 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:25:18,316 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829475891] [2020-12-01 15:25:18,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:25:18,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:25:18,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:25:18,563 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829475891] [2020-12-01 15:25:18,564 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:25:18,564 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-01 15:25:18,565 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038408280] [2020-12-01 15:25:18,570 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-01 15:25:18,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:25:18,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-01 15:25:18,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-01 15:25:18,598 INFO L87 Difference]: Start difference. First operand 274 states. Second operand 2 states. [2020-12-01 15:25:18,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:25:18,653 INFO L93 Difference]: Finished difference Result 274 states and 786 transitions. [2020-12-01 15:25:18,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-01 15:25:18,655 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-12-01 15:25:18,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:25:18,682 INFO L225 Difference]: With dead ends: 274 [2020-12-01 15:25:18,683 INFO L226 Difference]: Without dead ends: 226 [2020-12-01 15:25:18,685 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 [2020-12-01 15:25:18,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-12-01 15:25:18,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-12-01 15:25:18,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-12-01 15:25:18,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 634 transitions. [2020-12-01 15:25:18,799 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 634 transitions. Word has length 8 [2020-12-01 15:25:18,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:25:18,800 INFO L481 AbstractCegarLoop]: Abstraction has 226 states and 634 transitions. [2020-12-01 15:25:18,801 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-01 15:25:18,801 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 634 transitions. [2020-12-01 15:25:18,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-01 15:25:18,804 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:25:18,804 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:25:18,804 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-01 15:25:18,805 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:25:18,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:25:18,808 INFO L82 PathProgramCache]: Analyzing trace with hash -1929876305, now seen corresponding path program 1 times [2020-12-01 15:25:18,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:25:18,809 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442948897] [2020-12-01 15:25:18,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:25:18,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:25:18,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:25:18,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442948897] [2020-12-01 15:25:18,957 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:25:18,957 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-01 15:25:18,957 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202476122] [2020-12-01 15:25:18,958 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 15:25:18,959 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:25:18,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 15:25:18,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 15:25:18,960 INFO L87 Difference]: Start difference. First operand 226 states and 634 transitions. Second operand 4 states. [2020-12-01 15:25:18,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:25:18,999 INFO L93 Difference]: Finished difference Result 250 states and 668 transitions. [2020-12-01 15:25:19,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-01 15:25:19,000 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-12-01 15:25:19,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:25:19,003 INFO L225 Difference]: With dead ends: 250 [2020-12-01 15:25:19,004 INFO L226 Difference]: Without dead ends: 202 [2020-12-01 15:25:19,005 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 [2020-12-01 15:25:19,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-12-01 15:25:19,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-12-01 15:25:19,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-12-01 15:25:19,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 552 transitions. [2020-12-01 15:25:19,023 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 552 transitions. Word has length 9 [2020-12-01 15:25:19,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:25:19,024 INFO L481 AbstractCegarLoop]: Abstraction has 202 states and 552 transitions. [2020-12-01 15:25:19,024 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 15:25:19,024 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 552 transitions. [2020-12-01 15:25:19,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-01 15:25:19,053 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:25:19,053 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:25:19,053 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-01 15:25:19,053 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:25:19,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:25:19,054 INFO L82 PathProgramCache]: Analyzing trace with hash 303350682, now seen corresponding path program 1 times [2020-12-01 15:25:19,055 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:25:19,055 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662750202] [2020-12-01 15:25:19,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:25:19,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:25:19,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:25:19,186 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662750202] [2020-12-01 15:25:19,186 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:25:19,186 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-01 15:25:19,186 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819761931] [2020-12-01 15:25:19,187 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 15:25:19,187 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:25:19,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 15:25:19,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 15:25:19,189 INFO L87 Difference]: Start difference. First operand 202 states and 552 transitions. Second operand 4 states. [2020-12-01 15:25:19,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:25:19,219 INFO L93 Difference]: Finished difference Result 232 states and 608 transitions. [2020-12-01 15:25:19,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-01 15:25:19,220 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-12-01 15:25:19,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:25:19,224 INFO L225 Difference]: With dead ends: 232 [2020-12-01 15:25:19,224 INFO L226 Difference]: Without dead ends: 196 [2020-12-01 15:25:19,225 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 [2020-12-01 15:25:19,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-12-01 15:25:19,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2020-12-01 15:25:19,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-12-01 15:25:19,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 530 transitions. [2020-12-01 15:25:19,259 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 530 transitions. Word has length 10 [2020-12-01 15:25:19,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:25:19,259 INFO L481 AbstractCegarLoop]: Abstraction has 196 states and 530 transitions. [2020-12-01 15:25:19,259 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 15:25:19,260 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 530 transitions. [2020-12-01 15:25:19,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-01 15:25:19,265 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:25:19,265 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:25:19,265 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-01 15:25:19,266 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:25:19,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:25:19,266 INFO L82 PathProgramCache]: Analyzing trace with hash 135657142, now seen corresponding path program 1 times [2020-12-01 15:25:19,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:25:19,267 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277021312] [2020-12-01 15:25:19,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:25:19,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:25:19,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:25:19,381 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277021312] [2020-12-01 15:25:19,381 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:25:19,382 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-01 15:25:19,382 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004484706] [2020-12-01 15:25:19,382 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 15:25:19,383 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:25:19,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 15:25:19,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 15:25:19,388 INFO L87 Difference]: Start difference. First operand 196 states and 530 transitions. Second operand 4 states. [2020-12-01 15:25:19,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:25:19,424 INFO L93 Difference]: Finished difference Result 219 states and 566 transitions. [2020-12-01 15:25:19,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-01 15:25:19,425 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-01 15:25:19,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:25:19,428 INFO L225 Difference]: With dead ends: 219 [2020-12-01 15:25:19,429 INFO L226 Difference]: Without dead ends: 186 [2020-12-01 15:25:19,429 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 [2020-12-01 15:25:19,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-12-01 15:25:19,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2020-12-01 15:25:19,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2020-12-01 15:25:19,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 494 transitions. [2020-12-01 15:25:19,448 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 494 transitions. Word has length 11 [2020-12-01 15:25:19,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:25:19,448 INFO L481 AbstractCegarLoop]: Abstraction has 186 states and 494 transitions. [2020-12-01 15:25:19,449 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 15:25:19,449 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 494 transitions. [2020-12-01 15:25:19,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-01 15:25:19,450 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:25:19,450 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:25:19,451 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-01 15:25:19,451 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:25:19,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:25:19,452 INFO L82 PathProgramCache]: Analyzing trace with hash 90593002, now seen corresponding path program 1 times [2020-12-01 15:25:19,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:25:19,452 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48347789] [2020-12-01 15:25:19,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:25:19,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:25:19,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:25:19,552 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48347789] [2020-12-01 15:25:19,552 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:25:19,552 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-01 15:25:19,552 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315098799] [2020-12-01 15:25:19,553 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-01 15:25:19,553 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:25:19,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-01 15:25:19,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:25:19,556 INFO L87 Difference]: Start difference. First operand 186 states and 494 transitions. Second operand 5 states. [2020-12-01 15:25:19,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:25:19,641 INFO L93 Difference]: Finished difference Result 358 states and 886 transitions. [2020-12-01 15:25:19,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-01 15:25:19,642 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-12-01 15:25:19,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:25:19,645 INFO L225 Difference]: With dead ends: 358 [2020-12-01 15:25:19,645 INFO L226 Difference]: Without dead ends: 198 [2020-12-01 15:25:19,645 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-01 15:25:19,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-12-01 15:25:19,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 174. [2020-12-01 15:25:19,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-12-01 15:25:19,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 432 transitions. [2020-12-01 15:25:19,684 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 432 transitions. Word has length 12 [2020-12-01 15:25:19,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:25:19,684 INFO L481 AbstractCegarLoop]: Abstraction has 174 states and 432 transitions. [2020-12-01 15:25:19,684 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-01 15:25:19,684 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 432 transitions. [2020-12-01 15:25:19,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-01 15:25:19,685 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:25:19,685 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:25:19,685 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-01 15:25:19,686 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:25:19,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:25:19,686 INFO L82 PathProgramCache]: Analyzing trace with hash -89644004, now seen corresponding path program 1 times [2020-12-01 15:25:19,686 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:25:19,686 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678775429] [2020-12-01 15:25:19,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:25:19,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:25:19,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:25:19,794 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678775429] [2020-12-01 15:25:19,796 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:25:19,796 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 15:25:19,796 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570832780] [2020-12-01 15:25:19,797 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-01 15:25:19,798 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:25:19,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-01 15:25:19,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:25:19,801 INFO L87 Difference]: Start difference. First operand 174 states and 432 transitions. Second operand 5 states. [2020-12-01 15:25:19,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:25:19,842 INFO L93 Difference]: Finished difference Result 244 states and 599 transitions. [2020-12-01 15:25:19,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-01 15:25:19,843 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-12-01 15:25:19,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:25:19,844 INFO L225 Difference]: With dead ends: 244 [2020-12-01 15:25:19,845 INFO L226 Difference]: Without dead ends: 150 [2020-12-01 15:25:19,845 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-01 15:25:19,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-12-01 15:25:19,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2020-12-01 15:25:19,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-12-01 15:25:19,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 358 transitions. [2020-12-01 15:25:19,855 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 358 transitions. Word has length 12 [2020-12-01 15:25:19,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:25:19,855 INFO L481 AbstractCegarLoop]: Abstraction has 150 states and 358 transitions. [2020-12-01 15:25:19,855 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-01 15:25:19,855 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 358 transitions. [2020-12-01 15:25:19,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-01 15:25:19,856 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:25:19,856 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:25:19,856 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-01 15:25:19,857 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:25:19,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:25:19,857 INFO L82 PathProgramCache]: Analyzing trace with hash -90307094, now seen corresponding path program 2 times [2020-12-01 15:25:19,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:25:19,858 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999086533] [2020-12-01 15:25:19,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:25:19,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:25:19,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:25:19,924 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999086533] [2020-12-01 15:25:19,924 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:25:19,924 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 15:25:19,925 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234865494] [2020-12-01 15:25:19,925 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 15:25:19,925 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:25:19,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 15:25:19,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 15:25:19,927 INFO L87 Difference]: Start difference. First operand 150 states and 358 transitions. Second operand 4 states. [2020-12-01 15:25:19,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:25:19,977 INFO L93 Difference]: Finished difference Result 164 states and 351 transitions. [2020-12-01 15:25:19,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-01 15:25:19,978 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-12-01 15:25:19,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:25:19,983 INFO L225 Difference]: With dead ends: 164 [2020-12-01 15:25:19,983 INFO L226 Difference]: Without dead ends: 128 [2020-12-01 15:25:19,984 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 [2020-12-01 15:25:19,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-12-01 15:25:19,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2020-12-01 15:25:19,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-12-01 15:25:19,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 276 transitions. [2020-12-01 15:25:19,994 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 276 transitions. Word has length 12 [2020-12-01 15:25:19,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:25:19,995 INFO L481 AbstractCegarLoop]: Abstraction has 128 states and 276 transitions. [2020-12-01 15:25:19,995 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 15:25:19,995 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 276 transitions. [2020-12-01 15:25:19,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-01 15:25:19,996 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:25:19,996 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:25:19,996 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-01 15:25:19,996 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:25:19,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:25:19,997 INFO L82 PathProgramCache]: Analyzing trace with hash 85707411, now seen corresponding path program 1 times [2020-12-01 15:25:19,998 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:25:19,998 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663724863] [2020-12-01 15:25:19,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:25:20,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:25:20,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:25:20,064 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663724863] [2020-12-01 15:25:20,065 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:25:20,065 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-01 15:25:20,065 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505345764] [2020-12-01 15:25:20,065 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-01 15:25:20,066 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:25:20,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-01 15:25:20,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:25:20,068 INFO L87 Difference]: Start difference. First operand 128 states and 276 transitions. Second operand 5 states. [2020-12-01 15:25:20,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:25:20,129 INFO L93 Difference]: Finished difference Result 116 states and 222 transitions. [2020-12-01 15:25:20,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-01 15:25:20,129 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-12-01 15:25:20,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:25:20,130 INFO L225 Difference]: With dead ends: 116 [2020-12-01 15:25:20,130 INFO L226 Difference]: Without dead ends: 92 [2020-12-01 15:25:20,131 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-01 15:25:20,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-12-01 15:25:20,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2020-12-01 15:25:20,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-12-01 15:25:20,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 173 transitions. [2020-12-01 15:25:20,135 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 173 transitions. Word has length 13 [2020-12-01 15:25:20,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:25:20,136 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 173 transitions. [2020-12-01 15:25:20,136 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-01 15:25:20,136 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 173 transitions. [2020-12-01 15:25:20,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-01 15:25:20,137 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:25:20,137 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:25:20,137 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-01 15:25:20,137 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:25:20,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:25:20,139 INFO L82 PathProgramCache]: Analyzing trace with hash 1274722541, now seen corresponding path program 1 times [2020-12-01 15:25:20,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:25:20,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779696732] [2020-12-01 15:25:20,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:25:20,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:25:20,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:25:20,260 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779696732] [2020-12-01 15:25:20,261 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:25:20,261 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 15:25:20,262 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322673718] [2020-12-01 15:25:20,262 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 15:25:20,263 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:25:20,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 15:25:20,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 15:25:20,264 INFO L87 Difference]: Start difference. First operand 92 states and 173 transitions. Second operand 4 states. [2020-12-01 15:25:20,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:25:20,291 INFO L93 Difference]: Finished difference Result 104 states and 181 transitions. [2020-12-01 15:25:20,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-01 15:25:20,291 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-12-01 15:25:20,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:25:20,292 INFO L225 Difference]: With dead ends: 104 [2020-12-01 15:25:20,292 INFO L226 Difference]: Without dead ends: 70 [2020-12-01 15:25:20,293 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:25:20,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-12-01 15:25:20,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 68. [2020-12-01 15:25:20,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-12-01 15:25:20,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 115 transitions. [2020-12-01 15:25:20,297 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 115 transitions. Word has length 14 [2020-12-01 15:25:20,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:25:20,298 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 115 transitions. [2020-12-01 15:25:20,298 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 15:25:20,298 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 115 transitions. [2020-12-01 15:25:20,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-01 15:25:20,299 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:25:20,299 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:25:20,299 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-01 15:25:20,299 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:25:20,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:25:20,300 INFO L82 PathProgramCache]: Analyzing trace with hash -1788026541, now seen corresponding path program 1 times [2020-12-01 15:25:20,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:25:20,300 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492664763] [2020-12-01 15:25:20,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:25:20,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:25:20,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:25:20,422 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492664763] [2020-12-01 15:25:20,423 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:25:20,423 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-01 15:25:20,423 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622646516] [2020-12-01 15:25:20,423 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-01 15:25:20,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:25:20,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-01 15:25:20,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-01 15:25:20,425 INFO L87 Difference]: Start difference. First operand 68 states and 115 transitions. Second operand 6 states. [2020-12-01 15:25:20,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:25:20,465 INFO L93 Difference]: Finished difference Result 58 states and 100 transitions. [2020-12-01 15:25:20,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-01 15:25:20,466 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-12-01 15:25:20,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:25:20,466 INFO L225 Difference]: With dead ends: 58 [2020-12-01 15:25:20,466 INFO L226 Difference]: Without dead ends: 0 [2020-12-01 15:25:20,466 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-12-01 15:25:20,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-01 15:25:20,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-01 15:25:20,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-01 15:25:20,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-01 15:25:20,467 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-12-01 15:25:20,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:25:20,469 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-01 15:25:20,469 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-01 15:25:20,469 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-01 15:25:20,469 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-01 15:25:20,469 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-01 15:25:20,472 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 03:25:20 BasicIcfg [2020-12-01 15:25:20,473 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-01 15:25:20,473 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 15:25:20,473 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 15:25:20,473 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 15:25:20,474 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:25:13" (3/4) ... [2020-12-01 15:25:20,480 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-01 15:25:20,488 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-12-01 15:25:20,488 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-12-01 15:25:20,489 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-12-01 15:25:20,499 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-12-01 15:25:20,499 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-01 15:25:20,499 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-01 15:25:20,499 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-01 15:25:20,579 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_541c363e-cf19-44b2-be42-4899ceb86495/bin/uautomizer/witness.graphml [2020-12-01 15:25:20,579 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 15:25:20,581 INFO L168 Benchmark]: Toolchain (without parser) took 8498.63 ms. Allocated memory was 94.4 MB in the beginning and 172.0 MB in the end (delta: 77.6 MB). Free memory was 64.4 MB in the beginning and 125.0 MB in the end (delta: -60.7 MB). Peak memory consumption was 17.5 MB. Max. memory is 16.1 GB. [2020-12-01 15:25:20,581 INFO L168 Benchmark]: CDTParser took 0.42 ms. Allocated memory is still 94.4 MB. Free memory is still 51.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:25:20,582 INFO L168 Benchmark]: CACSL2BoogieTranslator took 752.16 ms. Allocated memory was 94.4 MB in the beginning and 117.4 MB in the end (delta: 23.1 MB). Free memory was 64.4 MB in the beginning and 74.3 MB in the end (delta: -9.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-12-01 15:25:20,582 INFO L168 Benchmark]: Boogie Procedure Inliner took 68.64 ms. Allocated memory is still 117.4 MB. Free memory was 74.3 MB in the beginning and 72.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 15:25:20,583 INFO L168 Benchmark]: Boogie Preprocessor took 62.51 ms. Allocated memory is still 117.4 MB. Free memory was 72.2 MB in the beginning and 71.1 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:25:20,583 INFO L168 Benchmark]: RCFGBuilder took 512.11 ms. Allocated memory is still 117.4 MB. Free memory was 70.7 MB in the beginning and 49.2 MB in the end (delta: 21.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2020-12-01 15:25:20,584 INFO L168 Benchmark]: TraceAbstraction took 6984.73 ms. Allocated memory was 117.4 MB in the beginning and 172.0 MB in the end (delta: 54.5 MB). Free memory was 48.6 MB in the beginning and 128.2 MB in the end (delta: -79.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:25:20,584 INFO L168 Benchmark]: Witness Printer took 106.39 ms. Allocated memory is still 172.0 MB. Free memory was 128.2 MB in the beginning and 125.0 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-01 15:25:20,587 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.42 ms. Allocated memory is still 94.4 MB. Free memory is still 51.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 752.16 ms. Allocated memory was 94.4 MB in the beginning and 117.4 MB in the end (delta: 23.1 MB). Free memory was 64.4 MB in the beginning and 74.3 MB in the end (delta: -9.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 68.64 ms. Allocated memory is still 117.4 MB. Free memory was 74.3 MB in the beginning and 72.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 62.51 ms. Allocated memory is still 117.4 MB. Free memory was 72.2 MB in the beginning and 71.1 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 512.11 ms. Allocated memory is still 117.4 MB. Free memory was 70.7 MB in the beginning and 49.2 MB in the end (delta: 21.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6984.73 ms. Allocated memory was 117.4 MB in the beginning and 172.0 MB in the end (delta: 54.5 MB). Free memory was 48.6 MB in the beginning and 128.2 MB in the end (delta: -79.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 106.39 ms. Allocated memory is still 172.0 MB. Free memory was 128.2 MB in the beginning and 125.0 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 899 VarBasedMoverChecksPositive, 38 VarBasedMoverChecksNegative, 9 SemBasedMoverChecksPositive, 29 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.5s, 54 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 4.5s, 83 PlacesBefore, 31 PlacesAfterwards, 76 TransitionsBefore, 22 TransitionsAfterwards, 1348 CoEnabledTransitionPairs, 5 FixpointIterations, 16 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 14 ConcurrentYvCompositions, 2 ChoiceCompositions, 68 TotalNumberOfCompositions, 2406 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, 74 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.8s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.6s, HoareTripleCheckerStatistics: 220 SDtfs, 202 SDslu, 335 SDs, 0 SdLazy, 122 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=274occurred 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: 0.2s AutomataMinimizationTime, 10 MinimizatonAttempts, 26 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 116 NumberOfCodeBlocks, 116 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 106 ConstructedInterpolants, 0 QuantifiedInterpolants, 3442 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...