./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe013_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_611a06a7-96f0-49fa-b7d6-50f1c379195f/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_611a06a7-96f0-49fa-b7d6-50f1c379195f/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_611a06a7-96f0-49fa-b7d6-50f1c379195f/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_611a06a7-96f0-49fa-b7d6-50f1c379195f/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe013_tso.oepc.i -s /tmp/vcloud-vcloud-master/worker/run_dir_611a06a7-96f0-49fa-b7d6-50f1c379195f/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_611a06a7-96f0-49fa-b7d6-50f1c379195f/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 d782eb66a472290f660a9df18ea2dbbe2896a85c .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 14:54:37,691 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 14:54:37,693 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 14:54:37,758 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 14:54:37,759 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 14:54:37,760 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 14:54:37,762 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 14:54:37,765 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 14:54:37,766 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 14:54:37,768 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 14:54:37,769 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 14:54:37,770 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 14:54:37,770 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 14:54:37,772 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 14:54:37,777 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 14:54:37,780 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 14:54:37,782 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 14:54:37,786 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 14:54:37,790 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 14:54:37,798 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 14:54:37,800 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 14:54:37,802 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 14:54:37,804 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 14:54:37,805 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 14:54:37,809 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 14:54:37,810 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 14:54:37,810 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 14:54:37,812 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 14:54:37,813 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 14:54:37,819 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 14:54:37,819 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 14:54:37,821 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 14:54:37,823 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 14:54:37,824 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 14:54:37,825 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 14:54:37,825 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 14:54:37,826 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 14:54:37,827 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 14:54:37,827 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 14:54:37,829 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 14:54:37,830 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 14:54:37,832 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_611a06a7-96f0-49fa-b7d6-50f1c379195f/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-01 14:54:37,870 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 14:54:37,870 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 14:54:37,872 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 14:54:37,872 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 14:54:37,873 INFO L138 SettingsManager]: * Use SBE=true [2020-12-01 14:54:37,873 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 14:54:37,873 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 14:54:37,874 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-01 14:54:37,874 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 14:54:37,874 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 14:54:37,875 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-01 14:54:37,875 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 14:54:37,876 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-01 14:54:37,876 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 14:54:37,876 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 14:54:37,876 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 14:54:37,877 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-01 14:54:37,877 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 14:54:37,877 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-01 14:54:37,877 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 14:54:37,877 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-01 14:54:37,878 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 14:54:37,878 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 14:54:37,878 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 14:54:37,879 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-01 14:54:37,879 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-01 14:54:37,879 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-01 14:54:37,879 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-01 14:54:37,879 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-01 14:54:37,880 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_611a06a7-96f0-49fa-b7d6-50f1c379195f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_611a06a7-96f0-49fa-b7d6-50f1c379195f/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d782eb66a472290f660a9df18ea2dbbe2896a85c [2020-12-01 14:54:38,183 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 14:54:38,217 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 14:54:38,222 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 14:54:38,223 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 14:54:38,224 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 14:54:38,225 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_611a06a7-96f0-49fa-b7d6-50f1c379195f/bin/uautomizer/../../sv-benchmarks/c/pthread-wmm/safe013_tso.oepc.i [2020-12-01 14:54:38,300 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_611a06a7-96f0-49fa-b7d6-50f1c379195f/bin/uautomizer/data/1de4e7773/8d6a070ac49e425487e6b7e6a589eb11/FLAGd421a3f3a [2020-12-01 14:54:38,791 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 14:54:38,792 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_611a06a7-96f0-49fa-b7d6-50f1c379195f/sv-benchmarks/c/pthread-wmm/safe013_tso.oepc.i [2020-12-01 14:54:38,807 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_611a06a7-96f0-49fa-b7d6-50f1c379195f/bin/uautomizer/data/1de4e7773/8d6a070ac49e425487e6b7e6a589eb11/FLAGd421a3f3a [2020-12-01 14:54:39,111 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_611a06a7-96f0-49fa-b7d6-50f1c379195f/bin/uautomizer/data/1de4e7773/8d6a070ac49e425487e6b7e6a589eb11 [2020-12-01 14:54:39,114 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 14:54:39,116 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 14:54:39,119 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 14:54:39,120 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 14:54:39,124 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 14:54:39,125 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 02:54:39" (1/1) ... [2020-12-01 14:54:39,127 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62e8ca6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:54:39, skipping insertion in model container [2020-12-01 14:54:39,127 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 02:54:39" (1/1) ... [2020-12-01 14:54:39,135 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 14:54:39,200 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 14:54:39,630 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 14:54:39,639 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 14:54:39,724 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 14:54:39,801 INFO L208 MainTranslator]: Completed translation [2020-12-01 14:54:39,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:54:39 WrapperNode [2020-12-01 14:54:39,802 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 14:54:39,803 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 14:54:39,803 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 14:54:39,803 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 14:54:39,811 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:54:39" (1/1) ... [2020-12-01 14:54:39,825 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:54:39" (1/1) ... [2020-12-01 14:54:39,845 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 14:54:39,846 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 14:54:39,846 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 14:54:39,846 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 14:54:39,854 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:54:39" (1/1) ... [2020-12-01 14:54:39,855 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:54:39" (1/1) ... [2020-12-01 14:54:39,858 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:54:39" (1/1) ... [2020-12-01 14:54:39,858 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:54:39" (1/1) ... [2020-12-01 14:54:39,865 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:54:39" (1/1) ... [2020-12-01 14:54:39,867 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:54:39" (1/1) ... [2020-12-01 14:54:39,869 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:54:39" (1/1) ... [2020-12-01 14:54:39,873 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 14:54:39,874 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 14:54:39,874 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 14:54:39,874 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 14:54:39,875 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:54:39" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_611a06a7-96f0-49fa-b7d6-50f1c379195f/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 14:54:39,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-01 14:54:39,942 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-01 14:54:39,942 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 14:54:39,943 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-01 14:54:39,943 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-01 14:54:39,943 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-01 14:54:39,943 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-01 14:54:39,943 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-01 14:54:39,943 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-12-01 14:54:39,944 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-12-01 14:54:39,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-01 14:54:39,944 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-01 14:54:39,944 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 14:54:39,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 14:54:39,946 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 14:54:40,524 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 14:54:40,525 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-12-01 14:54:40,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 02:54:40 BoogieIcfgContainer [2020-12-01 14:54:40,527 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 14:54:40,529 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-01 14:54:40,529 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-01 14:54:40,535 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-01 14:54:40,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 02:54:39" (1/3) ... [2020-12-01 14:54:40,536 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ab03b5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 02:54:40, skipping insertion in model container [2020-12-01 14:54:40,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:54:39" (2/3) ... [2020-12-01 14:54:40,537 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ab03b5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 02:54:40, skipping insertion in model container [2020-12-01 14:54:40,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 02:54:40" (3/3) ... [2020-12-01 14:54:40,539 INFO L111 eAbstractionObserver]: Analyzing ICFG safe013_tso.oepc.i [2020-12-01 14:54:40,554 WARN L169 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-01 14:54:40,555 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-01 14:54:40,558 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-01 14:54:40,559 INFO L354 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-01 14:54:40,587 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:40,587 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:40,587 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:40,587 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:40,588 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:40,588 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:40,588 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:40,588 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:40,589 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:40,589 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:40,589 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:40,590 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:40,590 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:40,590 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:40,591 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:40,591 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:40,591 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:40,591 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:40,591 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:40,592 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:40,592 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:40,592 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:40,593 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:40,593 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:40,593 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:40,594 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:40,594 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:40,594 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:40,594 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:40,594 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:40,595 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:40,595 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:40,595 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:40,596 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:40,596 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:40,596 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:40,598 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:40,599 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:40,599 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:40,599 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:40,604 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:40,604 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:40,604 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:40,605 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:40,607 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:40,607 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:40,607 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:40,608 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:40,609 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-01 14:54:40,621 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-01 14:54:40,640 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-01 14:54:40,640 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-01 14:54:40,641 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-01 14:54:40,641 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-01 14:54:40,641 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-01 14:54:40,641 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-01 14:54:40,641 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-01 14:54:40,641 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-01 14:54:40,653 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-01 14:54:40,655 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 86 places, 79 transitions, 173 flow [2020-12-01 14:54:40,658 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 86 places, 79 transitions, 173 flow [2020-12-01 14:54:40,660 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 86 places, 79 transitions, 173 flow [2020-12-01 14:54:40,702 INFO L129 PetriNetUnfolder]: 3/76 cut-off events. [2020-12-01 14:54:40,702 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-01 14:54:40,706 INFO L84 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 62 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. [2020-12-01 14:54:40,709 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2020-12-01 14:54:43,034 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2020-12-01 14:54:43,199 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2020-12-01 14:54:43,726 WARN L197 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-12-01 14:54:43,833 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-12-01 14:54:44,021 WARN L197 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-12-01 14:54:44,156 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-12-01 14:54:44,210 INFO L131 LiptonReduction]: Checked pairs total: 2822 [2020-12-01 14:54:44,210 INFO L133 LiptonReduction]: Total number of compositions: 71 [2020-12-01 14:54:44,216 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-12-01 14:54:44,242 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-12-01 14:54:44,244 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-12-01 14:54:44,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-01 14:54:44,250 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 14:54:44,251 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 14:54:44,251 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 14:54:44,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:54:44,257 INFO L82 PathProgramCache]: Analyzing trace with hash 406549293, now seen corresponding path program 1 times [2020-12-01 14:54:44,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 14:54:44,266 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851973817] [2020-12-01 14:54:44,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 14:54:44,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:54:44,421 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 14:54:44,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851973817] [2020-12-01 14:54:44,422 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 14:54:44,422 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-01 14:54:44,423 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51032913] [2020-12-01 14:54:44,427 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-01 14:54:44,427 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 14:54:44,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-01 14:54:44,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-01 14:54:44,442 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-12-01 14:54:44,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 14:54:44,474 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-12-01 14:54:44,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-01 14:54:44,475 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-12-01 14:54:44,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 14:54:44,490 INFO L225 Difference]: With dead ends: 362 [2020-12-01 14:54:44,491 INFO L226 Difference]: Without dead ends: 298 [2020-12-01 14:54:44,492 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 14:54:44,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-12-01 14:54:44,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-12-01 14:54:44,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-12-01 14:54:44,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-12-01 14:54:44,571 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-12-01 14:54:44,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 14:54:44,572 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-12-01 14:54:44,572 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-01 14:54:44,572 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-12-01 14:54:44,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-01 14:54:44,574 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 14:54:44,574 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 14:54:44,574 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-01 14:54:44,574 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 14:54:44,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:54:44,575 INFO L82 PathProgramCache]: Analyzing trace with hash -281880887, now seen corresponding path program 1 times [2020-12-01 14:54:44,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 14:54:44,575 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753133653] [2020-12-01 14:54:44,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 14:54:44,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:54:44,691 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 14:54:44,691 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753133653] [2020-12-01 14:54:44,691 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 14:54:44,691 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-01 14:54:44,692 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045438413] [2020-12-01 14:54:44,693 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-01 14:54:44,693 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 14:54:44,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-01 14:54:44,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 14:54:44,694 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 3 states. [2020-12-01 14:54:44,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 14:54:44,725 INFO L93 Difference]: Finished difference Result 217 states and 540 transitions. [2020-12-01 14:54:44,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-01 14:54:44,727 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-12-01 14:54:44,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 14:54:44,732 INFO L225 Difference]: With dead ends: 217 [2020-12-01 14:54:44,732 INFO L226 Difference]: Without dead ends: 217 [2020-12-01 14:54:44,733 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 14:54:44,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-12-01 14:54:44,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2020-12-01 14:54:44,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2020-12-01 14:54:44,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 540 transitions. [2020-12-01 14:54:44,749 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 540 transitions. Word has length 9 [2020-12-01 14:54:44,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 14:54:44,750 INFO L481 AbstractCegarLoop]: Abstraction has 217 states and 540 transitions. [2020-12-01 14:54:44,750 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-01 14:54:44,750 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 540 transitions. [2020-12-01 14:54:44,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-01 14:54:44,751 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 14:54:44,752 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 14:54:44,752 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-01 14:54:44,752 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 14:54:44,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:54:44,753 INFO L82 PathProgramCache]: Analyzing trace with hash -389577111, now seen corresponding path program 1 times [2020-12-01 14:54:44,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 14:54:44,753 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749117258] [2020-12-01 14:54:44,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 14:54:44,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:54:44,811 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 14:54:44,812 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749117258] [2020-12-01 14:54:44,812 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 14:54:44,812 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 14:54:44,813 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846109109] [2020-12-01 14:54:44,813 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 14:54:44,813 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 14:54:44,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 14:54:44,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-01 14:54:44,814 INFO L87 Difference]: Start difference. First operand 217 states and 540 transitions. Second operand 4 states. [2020-12-01 14:54:44,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 14:54:44,853 INFO L93 Difference]: Finished difference Result 136 states and 297 transitions. [2020-12-01 14:54:44,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 14:54:44,854 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-12-01 14:54:44,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 14:54:44,856 INFO L225 Difference]: With dead ends: 136 [2020-12-01 14:54:44,857 INFO L226 Difference]: Without dead ends: 136 [2020-12-01 14:54:44,858 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-01 14:54:44,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-12-01 14:54:44,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2020-12-01 14:54:44,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-12-01 14:54:44,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 297 transitions. [2020-12-01 14:54:44,872 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 297 transitions. Word has length 12 [2020-12-01 14:54:44,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 14:54:44,873 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 297 transitions. [2020-12-01 14:54:44,873 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 14:54:44,873 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 297 transitions. [2020-12-01 14:54:44,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-01 14:54:44,877 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 14:54:44,877 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 14:54:44,877 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-01 14:54:44,878 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 14:54:44,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:54:44,879 INFO L82 PathProgramCache]: Analyzing trace with hash 1823296511, now seen corresponding path program 1 times [2020-12-01 14:54:44,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 14:54:44,880 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610367654] [2020-12-01 14:54:44,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 14:54:44,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:54:44,987 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 14:54:44,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610367654] [2020-12-01 14:54:44,987 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 14:54:44,988 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-01 14:54:44,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755505248] [2020-12-01 14:54:44,989 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-01 14:54:44,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 14:54:44,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-01 14:54:44,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-01 14:54:44,993 INFO L87 Difference]: Start difference. First operand 136 states and 297 transitions. Second operand 5 states. [2020-12-01 14:54:45,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 14:54:45,025 INFO L93 Difference]: Finished difference Result 109 states and 243 transitions. [2020-12-01 14:54:45,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-01 14:54:45,026 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-12-01 14:54:45,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 14:54:45,028 INFO L225 Difference]: With dead ends: 109 [2020-12-01 14:54:45,029 INFO L226 Difference]: Without dead ends: 109 [2020-12-01 14:54:45,031 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-01 14:54:45,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-12-01 14:54:45,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2020-12-01 14:54:45,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-12-01 14:54:45,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 243 transitions. [2020-12-01 14:54:45,043 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 243 transitions. Word has length 15 [2020-12-01 14:54:45,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 14:54:45,044 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 243 transitions. [2020-12-01 14:54:45,044 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-01 14:54:45,044 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 243 transitions. [2020-12-01 14:54:45,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-01 14:54:45,051 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 14:54:45,052 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 14:54:45,052 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-01 14:54:45,052 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 14:54:45,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:54:45,053 INFO L82 PathProgramCache]: Analyzing trace with hash -1915158341, now seen corresponding path program 1 times [2020-12-01 14:54:45,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 14:54:45,053 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326150997] [2020-12-01 14:54:45,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 14:54:45,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:54:45,170 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 14:54:45,170 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326150997] [2020-12-01 14:54:45,170 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 14:54:45,170 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 14:54:45,170 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991447430] [2020-12-01 14:54:45,171 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 14:54:45,171 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 14:54:45,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 14:54:45,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 14:54:45,172 INFO L87 Difference]: Start difference. First operand 109 states and 243 transitions. Second operand 4 states. [2020-12-01 14:54:45,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 14:54:45,190 INFO L93 Difference]: Finished difference Result 135 states and 291 transitions. [2020-12-01 14:54:45,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 14:54:45,190 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-12-01 14:54:45,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 14:54:45,191 INFO L225 Difference]: With dead ends: 135 [2020-12-01 14:54:45,191 INFO L226 Difference]: Without dead ends: 55 [2020-12-01 14:54:45,191 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 14:54:45,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-12-01 14:54:45,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-12-01 14:54:45,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-12-01 14:54:45,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 99 transitions. [2020-12-01 14:54:45,195 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 99 transitions. Word has length 18 [2020-12-01 14:54:45,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 14:54:45,195 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 99 transitions. [2020-12-01 14:54:45,195 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 14:54:45,195 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 99 transitions. [2020-12-01 14:54:45,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-01 14:54:45,196 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 14:54:45,196 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 14:54:45,196 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-01 14:54:45,197 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 14:54:45,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:54:45,197 INFO L82 PathProgramCache]: Analyzing trace with hash 1566003365, now seen corresponding path program 2 times [2020-12-01 14:54:45,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 14:54:45,198 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637802373] [2020-12-01 14:54:45,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 14:54:45,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:54:45,251 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 14:54:45,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637802373] [2020-12-01 14:54:45,252 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 14:54:45,252 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-01 14:54:45,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963320940] [2020-12-01 14:54:45,253 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-01 14:54:45,253 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 14:54:45,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-01 14:54:45,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-01 14:54:45,255 INFO L87 Difference]: Start difference. First operand 55 states and 99 transitions. Second operand 5 states. [2020-12-01 14:54:45,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 14:54:45,288 INFO L93 Difference]: Finished difference Result 69 states and 121 transitions. [2020-12-01 14:54:45,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-01 14:54:45,289 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-12-01 14:54:45,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 14:54:45,290 INFO L225 Difference]: With dead ends: 69 [2020-12-01 14:54:45,290 INFO L226 Difference]: Without dead ends: 31 [2020-12-01 14:54:45,290 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-01 14:54:45,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-12-01 14:54:45,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-12-01 14:54:45,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-12-01 14:54:45,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 45 transitions. [2020-12-01 14:54:45,294 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 45 transitions. Word has length 18 [2020-12-01 14:54:45,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 14:54:45,294 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 45 transitions. [2020-12-01 14:54:45,294 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-01 14:54:45,295 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 45 transitions. [2020-12-01 14:54:45,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-01 14:54:45,297 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 14:54:45,297 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 14:54:45,297 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-01 14:54:45,297 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 14:54:45,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:54:45,298 INFO L82 PathProgramCache]: Analyzing trace with hash -1541967813, now seen corresponding path program 3 times [2020-12-01 14:54:45,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 14:54:45,299 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217826432] [2020-12-01 14:54:45,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 14:54:45,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:54:45,399 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 14:54:45,399 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217826432] [2020-12-01 14:54:45,399 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 14:54:45,399 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 14:54:45,400 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347857299] [2020-12-01 14:54:45,401 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-01 14:54:45,401 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 14:54:45,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-01 14:54:45,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-01 14:54:45,402 INFO L87 Difference]: Start difference. First operand 31 states and 45 transitions. Second operand 5 states. [2020-12-01 14:54:45,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 14:54:45,430 INFO L93 Difference]: Finished difference Result 30 states and 44 transitions. [2020-12-01 14:54:45,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-01 14:54:45,431 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-12-01 14:54:45,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 14:54:45,431 INFO L225 Difference]: With dead ends: 30 [2020-12-01 14:54:45,431 INFO L226 Difference]: Without dead ends: 0 [2020-12-01 14:54:45,432 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 14:54:45,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-01 14:54:45,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-01 14:54:45,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-01 14:54:45,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-01 14:54:45,433 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-12-01 14:54:45,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 14:54:45,433 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-01 14:54:45,434 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-01 14:54:45,434 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-01 14:54:45,434 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-01 14:54:45,434 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-01 14:54:45,438 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 02:54:45 BasicIcfg [2020-12-01 14:54:45,438 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-01 14:54:45,438 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 14:54:45,438 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 14:54:45,439 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 14:54:45,440 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 02:54:40" (3/4) ... [2020-12-01 14:54:45,442 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-01 14:54:45,448 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-12-01 14:54:45,448 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-12-01 14:54:45,449 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-12-01 14:54:45,455 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-12-01 14:54:45,455 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-01 14:54:45,456 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-01 14:54:45,456 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-01 14:54:45,512 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_611a06a7-96f0-49fa-b7d6-50f1c379195f/bin/uautomizer/witness.graphml [2020-12-01 14:54:45,512 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 14:54:45,515 INFO L168 Benchmark]: Toolchain (without parser) took 6396.76 ms. Allocated memory was 79.7 MB in the beginning and 148.9 MB in the end (delta: 69.2 MB). Free memory was 47.4 MB in the beginning and 87.1 MB in the end (delta: -39.7 MB). Peak memory consumption was 28.7 MB. Max. memory is 16.1 GB. [2020-12-01 14:54:45,519 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 79.7 MB. Free memory was 50.8 MB in the beginning and 50.8 MB in the end (delta: 24.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 14:54:45,520 INFO L168 Benchmark]: CACSL2BoogieTranslator took 682.60 ms. Allocated memory was 79.7 MB in the beginning and 96.5 MB in the end (delta: 16.8 MB). Free memory was 47.2 MB in the beginning and 53.3 MB in the end (delta: -6.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-01 14:54:45,521 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.72 ms. Allocated memory is still 96.5 MB. Free memory was 53.3 MB in the beginning and 51.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 14:54:45,522 INFO L168 Benchmark]: Boogie Preprocessor took 26.75 ms. Allocated memory is still 96.5 MB. Free memory was 51.2 MB in the beginning and 50.1 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 14:54:45,522 INFO L168 Benchmark]: RCFGBuilder took 653.62 ms. Allocated memory is still 96.5 MB. Free memory was 50.1 MB in the beginning and 68.1 MB in the end (delta: -18.1 MB). Peak memory consumption was 18.6 MB. Max. memory is 16.1 GB. [2020-12-01 14:54:45,523 INFO L168 Benchmark]: TraceAbstraction took 4908.86 ms. Allocated memory was 96.5 MB in the beginning and 148.9 MB in the end (delta: 52.4 MB). Free memory was 67.4 MB in the beginning and 90.3 MB in the end (delta: -22.9 MB). Peak memory consumption was 31.0 MB. Max. memory is 16.1 GB. [2020-12-01 14:54:45,523 INFO L168 Benchmark]: Witness Printer took 73.70 ms. Allocated memory is still 148.9 MB. Free memory was 90.3 MB in the beginning and 87.1 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-01 14:54:45,525 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 79.7 MB. Free memory was 50.8 MB in the beginning and 50.8 MB in the end (delta: 24.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 682.60 ms. Allocated memory was 79.7 MB in the beginning and 96.5 MB in the end (delta: 16.8 MB). Free memory was 47.2 MB in the beginning and 53.3 MB in the end (delta: -6.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 42.72 ms. Allocated memory is still 96.5 MB. Free memory was 53.3 MB in the beginning and 51.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 26.75 ms. Allocated memory is still 96.5 MB. Free memory was 51.2 MB in the beginning and 50.1 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 653.62 ms. Allocated memory is still 96.5 MB. Free memory was 50.1 MB in the beginning and 68.1 MB in the end (delta: -18.1 MB). Peak memory consumption was 18.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4908.86 ms. Allocated memory was 96.5 MB in the beginning and 148.9 MB in the end (delta: 52.4 MB). Free memory was 67.4 MB in the beginning and 90.3 MB in the end (delta: -22.9 MB). Peak memory consumption was 31.0 MB. Max. memory is 16.1 GB. * Witness Printer took 73.70 ms. Allocated memory is still 148.9 MB. Free memory was 90.3 MB in the beginning and 87.1 MB in the end (delta: 3.1 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 1022 VarBasedMoverChecksPositive, 44 VarBasedMoverChecksNegative, 12 SemBasedMoverChecksPositive, 32 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 86 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.5s, 86 PlacesBefore, 32 PlacesAfterwards, 79 TransitionsBefore, 23 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 6 FixpointIterations, 18 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 13 ConcurrentYvCompositions, 2 ChoiceCompositions, 71 TotalNumberOfCompositions, 2822 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: 4.7s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.6s, HoareTripleCheckerStatistics: 129 SDtfs, 85 SDslu, 171 SDs, 0 SdLazy, 55 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s 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, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 98 NumberOfCodeBlocks, 98 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 91 ConstructedInterpolants, 0 QuantifiedInterpolants, 3355 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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...