./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/thin002_pso.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_d54039be-8efe-4d76-ae1a-afbfd9bc7221/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_d54039be-8efe-4d76-ae1a-afbfd9bc7221/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_d54039be-8efe-4d76-ae1a-afbfd9bc7221/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_d54039be-8efe-4d76-ae1a-afbfd9bc7221/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/thin002_pso.oepc.i -s /tmp/vcloud-vcloud-master/worker/run_dir_d54039be-8efe-4d76-ae1a-afbfd9bc7221/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_d54039be-8efe-4d76-ae1a-afbfd9bc7221/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 fa3e2ddd2156ae746a75cc70eab9b6ff4fc79271 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 02:56:34,617 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 02:56:34,619 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 02:56:34,685 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 02:56:34,686 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 02:56:34,687 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 02:56:34,690 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 02:56:34,695 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 02:56:34,698 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 02:56:34,699 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 02:56:34,700 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 02:56:34,702 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 02:56:34,703 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 02:56:34,704 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 02:56:34,706 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 02:56:34,707 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 02:56:34,708 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 02:56:34,710 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 02:56:34,713 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 02:56:34,716 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 02:56:34,718 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 02:56:34,720 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 02:56:34,721 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 02:56:34,723 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 02:56:34,727 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 02:56:34,728 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 02:56:34,728 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 02:56:34,729 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 02:56:34,730 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 02:56:34,732 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 02:56:34,732 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 02:56:34,733 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 02:56:34,734 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 02:56:34,735 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 02:56:34,737 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 02:56:34,738 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 02:56:34,739 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 02:56:34,741 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 02:56:34,741 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 02:56:34,746 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 02:56:34,748 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 02:56:34,767 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_d54039be-8efe-4d76-ae1a-afbfd9bc7221/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-28 02:56:34,843 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 02:56:34,845 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 02:56:34,847 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 02:56:34,848 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 02:56:34,848 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 02:56:34,848 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 02:56:34,849 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 02:56:34,849 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 02:56:34,849 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 02:56:34,849 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 02:56:34,851 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 02:56:34,851 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 02:56:34,851 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 02:56:34,851 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 02:56:34,852 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 02:56:34,852 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 02:56:34,852 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 02:56:34,852 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 02:56:34,853 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 02:56:34,853 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 02:56:34,853 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 02:56:34,853 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 02:56:34,854 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 02:56:34,854 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 02:56:34,854 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 02:56:34,854 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 02:56:34,855 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 02:56:34,855 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 02:56:34,855 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 02:56:34,855 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_d54039be-8efe-4d76-ae1a-afbfd9bc7221/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_d54039be-8efe-4d76-ae1a-afbfd9bc7221/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fa3e2ddd2156ae746a75cc70eab9b6ff4fc79271 [2020-11-28 02:56:35,116 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 02:56:35,165 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 02:56:35,168 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 02:56:35,169 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 02:56:35,170 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 02:56:35,171 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_d54039be-8efe-4d76-ae1a-afbfd9bc7221/bin/uautomizer/../../sv-benchmarks/c/pthread-wmm/thin002_pso.oepc.i [2020-11-28 02:56:35,274 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d54039be-8efe-4d76-ae1a-afbfd9bc7221/bin/uautomizer/data/44a91006d/e479dab34b8a45cd9d99198d832a72fa/FLAGa0a8059c7 [2020-11-28 02:56:35,933 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 02:56:35,939 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_d54039be-8efe-4d76-ae1a-afbfd9bc7221/sv-benchmarks/c/pthread-wmm/thin002_pso.oepc.i [2020-11-28 02:56:35,965 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d54039be-8efe-4d76-ae1a-afbfd9bc7221/bin/uautomizer/data/44a91006d/e479dab34b8a45cd9d99198d832a72fa/FLAGa0a8059c7 [2020-11-28 02:56:36,205 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_d54039be-8efe-4d76-ae1a-afbfd9bc7221/bin/uautomizer/data/44a91006d/e479dab34b8a45cd9d99198d832a72fa [2020-11-28 02:56:36,208 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 02:56:36,210 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 02:56:36,211 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 02:56:36,212 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 02:56:36,215 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 02:56:36,216 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:56:36" (1/1) ... [2020-11-28 02:56:36,219 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ebbed14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:36, skipping insertion in model container [2020-11-28 02:56:36,219 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:56:36" (1/1) ... [2020-11-28 02:56:36,226 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 02:56:36,279 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 02:56:36,643 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:56:36,653 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 02:56:36,695 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:56:36,776 INFO L208 MainTranslator]: Completed translation [2020-11-28 02:56:36,777 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:36 WrapperNode [2020-11-28 02:56:36,777 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 02:56:36,778 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 02:56:36,779 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 02:56:36,779 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 02:56:36,787 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:36" (1/1) ... [2020-11-28 02:56:36,803 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:36" (1/1) ... [2020-11-28 02:56:36,825 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 02:56:36,826 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 02:56:36,826 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 02:56:36,826 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 02:56:36,835 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:36" (1/1) ... [2020-11-28 02:56:36,835 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:36" (1/1) ... [2020-11-28 02:56:36,839 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:36" (1/1) ... [2020-11-28 02:56:36,840 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:36" (1/1) ... [2020-11-28 02:56:36,847 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:36" (1/1) ... [2020-11-28 02:56:36,849 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:36" (1/1) ... [2020-11-28 02:56:36,851 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:36" (1/1) ... [2020-11-28 02:56:36,855 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 02:56:36,856 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 02:56:36,856 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 02:56:36,856 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 02:56:36,857 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:36" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d54039be-8efe-4d76-ae1a-afbfd9bc7221/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 02:56:36,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 02:56:36,972 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-28 02:56:36,972 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 02:56:36,973 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 02:56:36,973 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-28 02:56:36,974 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-28 02:56:36,974 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-28 02:56:36,974 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-28 02:56:36,975 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-28 02:56:36,975 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-28 02:56:36,976 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-11-28 02:56:36,976 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-11-28 02:56:36,976 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 02:56:36,976 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-28 02:56:36,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 02:56:36,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 02:56:36,979 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-28 02:56:37,516 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 02:56:37,516 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-28 02:56:37,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:56:37 BoogieIcfgContainer [2020-11-28 02:56:37,519 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 02:56:37,521 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 02:56:37,521 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 02:56:37,525 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 02:56:37,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:56:36" (1/3) ... [2020-11-28 02:56:37,526 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12852598 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:56:37, skipping insertion in model container [2020-11-28 02:56:37,526 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:36" (2/3) ... [2020-11-28 02:56:37,526 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12852598 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:56:37, skipping insertion in model container [2020-11-28 02:56:37,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:56:37" (3/3) ... [2020-11-28 02:56:37,528 INFO L111 eAbstractionObserver]: Analyzing ICFG thin002_pso.oepc.i [2020-11-28 02:56:37,540 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-28 02:56:37,540 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 02:56:37,545 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 02:56:37,546 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-28 02:56:37,577 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:56:37,577 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:56:37,577 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:56:37,577 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:56:37,578 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:56:37,578 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:56:37,579 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:56:37,579 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:56:37,579 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:56:37,580 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:56:37,580 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:56:37,580 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:56:37,581 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:56:37,581 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:56:37,581 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:56:37,581 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:56:37,581 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:56:37,581 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:56:37,582 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:56:37,582 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:56:37,582 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:56:37,582 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:56:37,583 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:56:37,583 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:56:37,585 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:56:37,585 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:56:37,586 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:56:37,586 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:56:37,596 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:56:37,596 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:56:37,597 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:56:37,597 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:56:37,603 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:56:37,603 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:56:37,604 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:56:37,604 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:56:37,609 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:56:37,609 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:56:37,609 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:56:37,609 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 02:56:37,611 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-28 02:56:37,623 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-11-28 02:56:37,645 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 02:56:37,645 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 02:56:37,645 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 02:56:37,646 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 02:56:37,646 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 02:56:37,646 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 02:56:37,646 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 02:56:37,647 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 02:56:37,659 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-28 02:56:37,661 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 105 places, 95 transitions, 210 flow [2020-11-28 02:56:37,663 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 105 places, 95 transitions, 210 flow [2020-11-28 02:56:37,665 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 105 places, 95 transitions, 210 flow [2020-11-28 02:56:37,717 INFO L129 PetriNetUnfolder]: 3/91 cut-off events. [2020-11-28 02:56:37,717 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-28 02:56:37,723 INFO L80 FinitePrefix]: Finished finitePrefix Result has 104 conditions, 91 events. 3/91 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 74 event pairs, 0 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 74. Up to 2 conditions per place. [2020-11-28 02:56:37,727 INFO L116 LiptonReduction]: Number of co-enabled transitions 2256 [2020-11-28 02:56:39,935 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 44 [2020-11-28 02:56:40,498 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 82 [2020-11-28 02:56:40,632 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2020-11-28 02:56:40,710 INFO L131 LiptonReduction]: Checked pairs total: 4418 [2020-11-28 02:56:40,711 INFO L133 LiptonReduction]: Total number of compositions: 80 [2020-11-28 02:56:40,721 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 41 places, 29 transitions, 78 flow [2020-11-28 02:56:40,840 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 1450 states. [2020-11-28 02:56:40,843 INFO L276 IsEmpty]: Start isEmpty. Operand 1450 states. [2020-11-28 02:56:40,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 02:56:40,856 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:40,856 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:56:40,858 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:56:40,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:40,865 INFO L82 PathProgramCache]: Analyzing trace with hash 481695671, now seen corresponding path program 1 times [2020-11-28 02:56:40,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:40,875 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197932470] [2020-11-28 02:56:40,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:41,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:41,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:41,131 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197932470] [2020-11-28 02:56:41,132 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:41,133 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 02:56:41,133 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148392904] [2020-11-28 02:56:41,138 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 02:56:41,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:41,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 02:56:41,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 02:56:41,175 INFO L87 Difference]: Start difference. First operand 1450 states. Second operand 2 states. [2020-11-28 02:56:41,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:41,250 INFO L93 Difference]: Finished difference Result 1450 states and 5376 transitions. [2020-11-28 02:56:41,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 02:56:41,252 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-11-28 02:56:41,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:41,286 INFO L225 Difference]: With dead ends: 1450 [2020-11-28 02:56:41,286 INFO L226 Difference]: Without dead ends: 1194 [2020-11-28 02:56:41,288 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 02:56:41,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1194 states. [2020-11-28 02:56:41,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1194 to 1194. [2020-11-28 02:56:41,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1194 states. [2020-11-28 02:56:41,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1194 states to 1194 states and 4352 transitions. [2020-11-28 02:56:41,461 INFO L78 Accepts]: Start accepts. Automaton has 1194 states and 4352 transitions. Word has length 10 [2020-11-28 02:56:41,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:41,463 INFO L481 AbstractCegarLoop]: Abstraction has 1194 states and 4352 transitions. [2020-11-28 02:56:41,465 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 02:56:41,465 INFO L276 IsEmpty]: Start isEmpty. Operand 1194 states and 4352 transitions. [2020-11-28 02:56:41,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 02:56:41,478 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:41,478 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:56:41,478 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 02:56:41,479 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:56:41,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:41,484 INFO L82 PathProgramCache]: Analyzing trace with hash 2047662136, now seen corresponding path program 1 times [2020-11-28 02:56:41,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:41,485 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333476196] [2020-11-28 02:56:41,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:41,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:41,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:41,650 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333476196] [2020-11-28 02:56:41,650 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:41,650 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 02:56:41,651 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598117844] [2020-11-28 02:56:41,652 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 02:56:41,652 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:41,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 02:56:41,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:56:41,654 INFO L87 Difference]: Start difference. First operand 1194 states and 4352 transitions. Second operand 4 states. [2020-11-28 02:56:41,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:41,717 INFO L93 Difference]: Finished difference Result 1322 states and 4640 transitions. [2020-11-28 02:56:41,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 02:56:41,718 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-11-28 02:56:41,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:41,730 INFO L225 Difference]: With dead ends: 1322 [2020-11-28 02:56:41,730 INFO L226 Difference]: Without dead ends: 1066 [2020-11-28 02:56:41,731 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 [2020-11-28 02:56:41,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2020-11-28 02:56:41,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2020-11-28 02:56:41,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1066 states. [2020-11-28 02:56:41,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 3808 transitions. [2020-11-28 02:56:41,784 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 3808 transitions. Word has length 11 [2020-11-28 02:56:41,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:41,785 INFO L481 AbstractCegarLoop]: Abstraction has 1066 states and 3808 transitions. [2020-11-28 02:56:41,785 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 02:56:41,785 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 3808 transitions. [2020-11-28 02:56:41,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-28 02:56:41,787 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:41,787 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:56:41,788 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 02:56:41,788 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:56:41,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:41,789 INFO L82 PathProgramCache]: Analyzing trace with hash -947021519, now seen corresponding path program 1 times [2020-11-28 02:56:41,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:41,789 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358382906] [2020-11-28 02:56:41,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:41,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:41,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:41,867 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358382906] [2020-11-28 02:56:41,867 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:41,867 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 02:56:41,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749799025] [2020-11-28 02:56:41,868 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 02:56:41,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:41,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 02:56:41,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:56:41,869 INFO L87 Difference]: Start difference. First operand 1066 states and 3808 transitions. Second operand 4 states. [2020-11-28 02:56:41,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:41,926 INFO L93 Difference]: Finished difference Result 1162 states and 4016 transitions. [2020-11-28 02:56:41,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 02:56:41,927 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-11-28 02:56:41,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:41,937 INFO L225 Difference]: With dead ends: 1162 [2020-11-28 02:56:41,937 INFO L226 Difference]: Without dead ends: 970 [2020-11-28 02:56:41,938 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 [2020-11-28 02:56:41,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 970 states. [2020-11-28 02:56:41,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 970 to 970. [2020-11-28 02:56:41,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 970 states. [2020-11-28 02:56:41,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 3408 transitions. [2020-11-28 02:56:41,982 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 3408 transitions. Word has length 12 [2020-11-28 02:56:41,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:41,983 INFO L481 AbstractCegarLoop]: Abstraction has 970 states and 3408 transitions. [2020-11-28 02:56:41,983 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 02:56:41,983 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 3408 transitions. [2020-11-28 02:56:41,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-28 02:56:41,985 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:41,985 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:56:41,986 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 02:56:41,986 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:56:41,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:41,988 INFO L82 PathProgramCache]: Analyzing trace with hash 639493830, now seen corresponding path program 1 times [2020-11-28 02:56:41,988 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:41,988 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15688882] [2020-11-28 02:56:41,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:42,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:42,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:42,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15688882] [2020-11-28 02:56:42,133 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:42,133 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 02:56:42,133 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263676676] [2020-11-28 02:56:42,134 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 02:56:42,134 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:42,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 02:56:42,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:56:42,135 INFO L87 Difference]: Start difference. First operand 970 states and 3408 transitions. Second operand 5 states. [2020-11-28 02:56:42,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:42,296 INFO L93 Difference]: Finished difference Result 1162 states and 3980 transitions. [2020-11-28 02:56:42,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 02:56:42,297 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-11-28 02:56:42,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:42,302 INFO L225 Difference]: With dead ends: 1162 [2020-11-28 02:56:42,302 INFO L226 Difference]: Without dead ends: 508 [2020-11-28 02:56:42,303 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-28 02:56:42,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2020-11-28 02:56:42,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 508. [2020-11-28 02:56:42,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 508 states. [2020-11-28 02:56:42,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 1638 transitions. [2020-11-28 02:56:42,325 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 1638 transitions. Word has length 13 [2020-11-28 02:56:42,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:42,326 INFO L481 AbstractCegarLoop]: Abstraction has 508 states and 1638 transitions. [2020-11-28 02:56:42,326 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 02:56:42,326 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 1638 transitions. [2020-11-28 02:56:42,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-28 02:56:42,328 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:42,331 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:56:42,332 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 02:56:42,332 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:56:42,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:42,333 INFO L82 PathProgramCache]: Analyzing trace with hash 380154805, now seen corresponding path program 1 times [2020-11-28 02:56:42,333 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:42,334 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298396100] [2020-11-28 02:56:42,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:42,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:42,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:42,411 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298396100] [2020-11-28 02:56:42,411 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:42,412 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 02:56:42,412 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110999381] [2020-11-28 02:56:42,412 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 02:56:42,412 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:42,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 02:56:42,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:56:42,413 INFO L87 Difference]: Start difference. First operand 508 states and 1638 transitions. Second operand 4 states. [2020-11-28 02:56:42,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:42,438 INFO L93 Difference]: Finished difference Result 544 states and 1704 transitions. [2020-11-28 02:56:42,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 02:56:42,439 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-11-28 02:56:42,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:42,444 INFO L225 Difference]: With dead ends: 544 [2020-11-28 02:56:42,444 INFO L226 Difference]: Without dead ends: 472 [2020-11-28 02:56:42,444 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 [2020-11-28 02:56:42,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2020-11-28 02:56:42,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 472. [2020-11-28 02:56:42,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 472 states. [2020-11-28 02:56:42,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 1500 transitions. [2020-11-28 02:56:42,466 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 1500 transitions. Word has length 15 [2020-11-28 02:56:42,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:42,467 INFO L481 AbstractCegarLoop]: Abstraction has 472 states and 1500 transitions. [2020-11-28 02:56:42,467 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 02:56:42,467 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 1500 transitions. [2020-11-28 02:56:42,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-28 02:56:42,469 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:42,469 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:56:42,469 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-28 02:56:42,469 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:56:42,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:42,471 INFO L82 PathProgramCache]: Analyzing trace with hash -2067323682, now seen corresponding path program 1 times [2020-11-28 02:56:42,471 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:42,472 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570642170] [2020-11-28 02:56:42,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:42,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:42,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:42,549 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570642170] [2020-11-28 02:56:42,549 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:42,549 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 02:56:42,549 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543718250] [2020-11-28 02:56:42,550 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 02:56:42,550 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:42,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 02:56:42,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:56:42,551 INFO L87 Difference]: Start difference. First operand 472 states and 1500 transitions. Second operand 5 states. [2020-11-28 02:56:42,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:42,665 INFO L93 Difference]: Finished difference Result 586 states and 1831 transitions. [2020-11-28 02:56:42,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 02:56:42,666 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-11-28 02:56:42,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:42,670 INFO L225 Difference]: With dead ends: 586 [2020-11-28 02:56:42,670 INFO L226 Difference]: Without dead ends: 262 [2020-11-28 02:56:42,670 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-28 02:56:42,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2020-11-28 02:56:42,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 262. [2020-11-28 02:56:42,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-11-28 02:56:42,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 768 transitions. [2020-11-28 02:56:42,684 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 768 transitions. Word has length 16 [2020-11-28 02:56:42,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:42,684 INFO L481 AbstractCegarLoop]: Abstraction has 262 states and 768 transitions. [2020-11-28 02:56:42,684 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 02:56:42,684 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 768 transitions. [2020-11-28 02:56:42,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-28 02:56:42,686 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:42,686 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:56:42,686 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-28 02:56:42,686 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:56:42,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:42,688 INFO L82 PathProgramCache]: Analyzing trace with hash 253681578, now seen corresponding path program 1 times [2020-11-28 02:56:42,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:42,688 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100873951] [2020-11-28 02:56:42,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:42,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:42,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:42,788 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100873951] [2020-11-28 02:56:42,789 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:42,789 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 02:56:42,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45208603] [2020-11-28 02:56:42,789 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 02:56:42,790 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:42,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 02:56:42,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:56:42,791 INFO L87 Difference]: Start difference. First operand 262 states and 768 transitions. Second operand 5 states. [2020-11-28 02:56:42,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:42,883 INFO L93 Difference]: Finished difference Result 358 states and 1024 transitions. [2020-11-28 02:56:42,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 02:56:42,884 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-11-28 02:56:42,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:42,885 INFO L225 Difference]: With dead ends: 358 [2020-11-28 02:56:42,886 INFO L226 Difference]: Without dead ends: 154 [2020-11-28 02:56:42,887 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-28 02:56:42,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-11-28 02:56:42,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2020-11-28 02:56:42,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-11-28 02:56:42,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 410 transitions. [2020-11-28 02:56:42,896 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 410 transitions. Word has length 17 [2020-11-28 02:56:42,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:42,897 INFO L481 AbstractCegarLoop]: Abstraction has 154 states and 410 transitions. [2020-11-28 02:56:42,897 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 02:56:42,897 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 410 transitions. [2020-11-28 02:56:42,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-28 02:56:42,898 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:42,898 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:56:42,898 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-28 02:56:42,899 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:56:42,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:42,899 INFO L82 PathProgramCache]: Analyzing trace with hash -2117772472, now seen corresponding path program 1 times [2020-11-28 02:56:42,900 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:42,900 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990196205] [2020-11-28 02:56:42,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:42,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:43,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:43,000 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990196205] [2020-11-28 02:56:43,000 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:43,000 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 02:56:43,001 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486902815] [2020-11-28 02:56:43,001 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 02:56:43,001 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:43,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 02:56:43,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:56:43,002 INFO L87 Difference]: Start difference. First operand 154 states and 410 transitions. Second operand 5 states. [2020-11-28 02:56:43,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:43,056 INFO L93 Difference]: Finished difference Result 130 states and 334 transitions. [2020-11-28 02:56:43,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 02:56:43,057 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-11-28 02:56:43,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:43,057 INFO L225 Difference]: With dead ends: 130 [2020-11-28 02:56:43,057 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 02:56:43,057 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-28 02:56:43,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 02:56:43,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 02:56:43,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 02:56:43,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 02:56:43,058 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-11-28 02:56:43,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:43,058 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 02:56:43,058 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 02:56:43,058 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 02:56:43,058 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 02:56:43,059 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-28 02:56:43,062 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 02:56:43 BasicIcfg [2020-11-28 02:56:43,062 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 02:56:43,062 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 02:56:43,062 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 02:56:43,063 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 02:56:43,063 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:56:37" (3/4) ... [2020-11-28 02:56:43,068 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 02:56:43,074 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-11-28 02:56:43,074 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-11-28 02:56:43,075 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-11-28 02:56:43,075 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2020-11-28 02:56:43,082 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2020-11-28 02:56:43,082 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-28 02:56:43,083 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 02:56:43,083 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 02:56:43,145 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_d54039be-8efe-4d76-ae1a-afbfd9bc7221/bin/uautomizer/witness.graphml [2020-11-28 02:56:43,150 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 02:56:43,151 INFO L168 Benchmark]: Toolchain (without parser) took 6941.17 ms. Allocated memory was 92.3 MB in the beginning and 165.7 MB in the end (delta: 73.4 MB). Free memory was 61.0 MB in the beginning and 90.2 MB in the end (delta: -29.2 MB). Peak memory consumption was 42.9 MB. Max. memory is 16.1 GB. [2020-11-28 02:56:43,152 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 92.3 MB. Free memory was 51.0 MB in the beginning and 50.9 MB in the end (delta: 39.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:56:43,152 INFO L168 Benchmark]: CACSL2BoogieTranslator took 566.20 ms. Allocated memory is still 92.3 MB. Free memory was 60.8 MB in the beginning and 48.2 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-28 02:56:43,153 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.56 ms. Allocated memory is still 92.3 MB. Free memory was 48.2 MB in the beginning and 46.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 02:56:43,153 INFO L168 Benchmark]: Boogie Preprocessor took 29.44 ms. Allocated memory is still 92.3 MB. Free memory was 46.6 MB in the beginning and 44.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 02:56:43,154 INFO L168 Benchmark]: RCFGBuilder took 662.85 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 44.9 MB in the beginning and 75.5 MB in the end (delta: -30.6 MB). Peak memory consumption was 14.3 MB. Max. memory is 16.1 GB. [2020-11-28 02:56:43,154 INFO L168 Benchmark]: TraceAbstraction took 5541.22 ms. Allocated memory was 111.1 MB in the beginning and 165.7 MB in the end (delta: 54.5 MB). Free memory was 75.1 MB in the beginning and 93.3 MB in the end (delta: -18.2 MB). Peak memory consumption was 37.3 MB. Max. memory is 16.1 GB. [2020-11-28 02:56:43,155 INFO L168 Benchmark]: Witness Printer took 87.51 ms. Allocated memory is still 165.7 MB. Free memory was 93.3 MB in the beginning and 90.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 02:56:43,157 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 92.3 MB. Free memory was 51.0 MB in the beginning and 50.9 MB in the end (delta: 39.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 566.20 ms. Allocated memory is still 92.3 MB. Free memory was 60.8 MB in the beginning and 48.2 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 46.56 ms. Allocated memory is still 92.3 MB. Free memory was 48.2 MB in the beginning and 46.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 29.44 ms. Allocated memory is still 92.3 MB. Free memory was 46.6 MB in the beginning and 44.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 662.85 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 44.9 MB in the beginning and 75.5 MB in the end (delta: -30.6 MB). Peak memory consumption was 14.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5541.22 ms. Allocated memory was 111.1 MB in the beginning and 165.7 MB in the end (delta: 54.5 MB). Free memory was 75.1 MB in the beginning and 93.3 MB in the end (delta: -18.2 MB). Peak memory consumption was 37.3 MB. Max. memory is 16.1 GB. * Witness Printer took 87.51 ms. Allocated memory is still 165.7 MB. Free memory was 93.3 MB in the beginning and 90.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1644 VarBasedMoverChecksPositive, 61 VarBasedMoverChecksNegative, 12 SemBasedMoverChecksPositive, 49 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.5s, 172 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.0s, 105 PlacesBefore, 41 PlacesAfterwards, 95 TransitionsBefore, 29 TransitionsAfterwards, 2256 CoEnabledTransitionPairs, 5 FixpointIterations, 21 TrivialSequentialCompositions, 44 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 13 ConcurrentYvCompositions, 2 ChoiceCompositions, 80 TotalNumberOfCompositions, 4418 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 5 procedures, 93 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.4s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.1s, HoareTripleCheckerStatistics: 232 SDtfs, 257 SDslu, 326 SDs, 0 SdLazy, 57 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 35 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1450occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 112 NumberOfCodeBlocks, 112 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 104 ConstructedInterpolants, 0 QuantifiedInterpolants, 4169 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...