./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe025_pso.opt.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_c623580d-2aba-4577-8fcd-d78701624507/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_c623580d-2aba-4577-8fcd-d78701624507/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_c623580d-2aba-4577-8fcd-d78701624507/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_c623580d-2aba-4577-8fcd-d78701624507/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe025_pso.opt.i -s /tmp/vcloud-vcloud-master/worker/run_dir_c623580d-2aba-4577-8fcd-d78701624507/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_c623580d-2aba-4577-8fcd-d78701624507/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 8629328e258ffe2856bf08bdfdc740db811f6a10 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-69874e2 [2020-12-01 15:56:02,648 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 15:56:02,652 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 15:56:02,705 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 15:56:02,707 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 15:56:02,715 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 15:56:02,720 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 15:56:02,728 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 15:56:02,732 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 15:56:02,734 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 15:56:02,736 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 15:56:02,740 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 15:56:02,741 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 15:56:02,751 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 15:56:02,754 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 15:56:02,756 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 15:56:02,759 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 15:56:02,762 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 15:56:02,767 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 15:56:02,774 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 15:56:02,782 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 15:56:02,785 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 15:56:02,787 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 15:56:02,789 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 15:56:02,793 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 15:56:02,794 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 15:56:02,794 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 15:56:02,796 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 15:56:02,796 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 15:56:02,798 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 15:56:02,799 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 15:56:02,800 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 15:56:02,801 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 15:56:02,802 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 15:56:02,804 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 15:56:02,804 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 15:56:02,805 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 15:56:02,806 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 15:56:02,806 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 15:56:02,808 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 15:56:02,809 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 15:56:02,810 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_c623580d-2aba-4577-8fcd-d78701624507/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-01 15:56:02,840 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 15:56:02,841 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 15:56:02,847 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 15:56:02,847 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 15:56:02,848 INFO L138 SettingsManager]: * Use SBE=true [2020-12-01 15:56:02,848 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 15:56:02,849 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 15:56:02,849 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-01 15:56:02,849 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 15:56:02,850 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 15:56:02,851 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-01 15:56:02,852 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 15:56:02,852 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-01 15:56:02,852 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 15:56:02,852 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 15:56:02,853 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 15:56:02,853 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-01 15:56:02,853 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 15:56:02,853 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-01 15:56:02,854 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 15:56:02,854 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-01 15:56:02,854 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 15:56:02,855 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 15:56:02,855 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 15:56:02,856 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-01 15:56:02,856 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-01 15:56:02,856 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-01 15:56:02,857 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-01 15:56:02,857 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-01 15:56:02,857 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_c623580d-2aba-4577-8fcd-d78701624507/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_c623580d-2aba-4577-8fcd-d78701624507/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8629328e258ffe2856bf08bdfdc740db811f6a10 [2020-12-01 15:56:03,151 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 15:56:03,215 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 15:56:03,220 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 15:56:03,222 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 15:56:03,227 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 15:56:03,228 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_c623580d-2aba-4577-8fcd-d78701624507/bin/uautomizer/../../sv-benchmarks/c/pthread-wmm/safe025_pso.opt.i [2020-12-01 15:56:03,326 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c623580d-2aba-4577-8fcd-d78701624507/bin/uautomizer/data/4515e539d/ed45caccac76404ca738000b7f9d4b3f/FLAGf228bc3e1 [2020-12-01 15:56:03,976 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 15:56:03,977 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_c623580d-2aba-4577-8fcd-d78701624507/sv-benchmarks/c/pthread-wmm/safe025_pso.opt.i [2020-12-01 15:56:04,002 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c623580d-2aba-4577-8fcd-d78701624507/bin/uautomizer/data/4515e539d/ed45caccac76404ca738000b7f9d4b3f/FLAGf228bc3e1 [2020-12-01 15:56:04,166 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_c623580d-2aba-4577-8fcd-d78701624507/bin/uautomizer/data/4515e539d/ed45caccac76404ca738000b7f9d4b3f [2020-12-01 15:56:04,169 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 15:56:04,170 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 15:56:04,172 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 15:56:04,173 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 15:56:04,176 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 15:56:04,177 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:56:04" (1/1) ... [2020-12-01 15:56:04,180 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42c58ae0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:56:04, skipping insertion in model container [2020-12-01 15:56:04,180 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:56:04" (1/1) ... [2020-12-01 15:56:04,189 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 15:56:04,262 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 15:56:04,783 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:56:04,799 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 15:56:04,888 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:56:04,970 INFO L208 MainTranslator]: Completed translation [2020-12-01 15:56:04,971 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:56:04 WrapperNode [2020-12-01 15:56:04,971 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 15:56:04,972 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 15:56:04,973 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 15:56:04,973 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 15:56:04,981 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:56:04" (1/1) ... [2020-12-01 15:56:04,996 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:56:04" (1/1) ... [2020-12-01 15:56:05,018 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 15:56:05,019 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 15:56:05,019 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 15:56:05,019 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 15:56:05,028 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:56:04" (1/1) ... [2020-12-01 15:56:05,029 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:56:04" (1/1) ... [2020-12-01 15:56:05,034 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:56:04" (1/1) ... [2020-12-01 15:56:05,034 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:56:04" (1/1) ... [2020-12-01 15:56:05,041 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:56:04" (1/1) ... [2020-12-01 15:56:05,043 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:56:04" (1/1) ... [2020-12-01 15:56:05,045 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:56:04" (1/1) ... [2020-12-01 15:56:05,049 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 15:56:05,050 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 15:56:05,050 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 15:56:05,050 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 15:56:05,058 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:56:04" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c623580d-2aba-4577-8fcd-d78701624507/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 15:56:05,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-01 15:56:05,116 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-01 15:56:05,116 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 15:56:05,116 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-01 15:56:05,116 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-01 15:56:05,116 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-01 15:56:05,117 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-01 15:56:05,117 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-01 15:56:05,117 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-12-01 15:56:05,117 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-12-01 15:56:05,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-01 15:56:05,118 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-01 15:56:05,118 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 15:56:05,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 15:56:05,120 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-12-01 15:56:05,671 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 15:56:05,671 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-12-01 15:56:05,675 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:56:05 BoogieIcfgContainer [2020-12-01 15:56:05,675 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 15:56:05,676 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-01 15:56:05,676 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-01 15:56:05,680 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-01 15:56:05,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 03:56:04" (1/3) ... [2020-12-01 15:56:05,681 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16b520ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 03:56:05, skipping insertion in model container [2020-12-01 15:56:05,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:56:04" (2/3) ... [2020-12-01 15:56:05,682 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16b520ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 03:56:05, skipping insertion in model container [2020-12-01 15:56:05,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:56:05" (3/3) ... [2020-12-01 15:56:05,684 INFO L111 eAbstractionObserver]: Analyzing ICFG safe025_pso.opt.i [2020-12-01 15:56:05,700 WARN L169 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-01 15:56:05,700 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-01 15:56:05,704 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-01 15:56:05,705 INFO L354 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-01 15:56:05,734 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:56:05,735 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:56:05,735 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:56:05,735 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:56:05,735 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:56:05,736 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:56:05,736 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:56:05,736 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:56:05,737 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:56:05,737 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:56:05,737 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:56:05,737 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:56:05,738 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:56:05,738 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:56:05,738 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:56:05,738 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:56:05,739 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:56:05,739 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:56:05,739 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:56:05,739 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:56:05,740 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:56:05,740 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:56:05,740 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:56:05,741 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:56:05,741 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:56:05,741 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:56:05,741 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:56:05,742 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:56:05,742 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:56:05,742 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:56:05,742 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:56:05,743 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:56:05,743 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:56:05,743 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:56:05,744 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:56:05,744 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:56:05,746 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:56:05,746 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:56:05,747 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:56:05,747 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:56:05,752 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:56:05,752 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:56:05,752 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:56:05,753 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:56:05,755 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:56:05,755 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:56:05,755 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:56:05,756 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:56:05,757 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-01 15:56:05,769 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-01 15:56:05,791 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-01 15:56:05,791 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-01 15:56:05,791 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-01 15:56:05,792 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-01 15:56:05,792 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-01 15:56:05,792 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-01 15:56:05,792 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-01 15:56:05,792 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-01 15:56:05,805 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-01 15:56:05,807 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 86 places, 79 transitions, 173 flow [2020-12-01 15:56:05,811 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 86 places, 79 transitions, 173 flow [2020-12-01 15:56:05,813 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 86 places, 79 transitions, 173 flow [2020-12-01 15:56:05,866 INFO L129 PetriNetUnfolder]: 3/76 cut-off events. [2020-12-01 15:56:05,870 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-01 15:56:05,874 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 15:56:05,879 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2020-12-01 15:56:08,766 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 38 [2020-12-01 15:56:08,939 WARN L197 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 42 [2020-12-01 15:56:09,824 WARN L197 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-12-01 15:56:10,170 WARN L197 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-12-01 15:56:10,505 INFO L131 LiptonReduction]: Checked pairs total: 2926 [2020-12-01 15:56:10,505 INFO L133 LiptonReduction]: Total number of compositions: 72 [2020-12-01 15:56:10,512 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-12-01 15:56:10,539 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-12-01 15:56:10,541 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-12-01 15:56:10,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-01 15:56:10,547 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:56:10,548 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:56:10,549 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:56:10,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:56:10,554 INFO L82 PathProgramCache]: Analyzing trace with hash -1098074663, now seen corresponding path program 1 times [2020-12-01 15:56:10,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:56:10,564 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549842943] [2020-12-01 15:56:10,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:56:10,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:56:10,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:56:10,839 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549842943] [2020-12-01 15:56:10,840 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:56:10,841 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-01 15:56:10,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674373895] [2020-12-01 15:56:10,846 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-01 15:56:10,848 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:56:10,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-01 15:56:10,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 15:56:10,875 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-12-01 15:56:10,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:56:10,953 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-12-01 15:56:10,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-01 15:56:10,955 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-12-01 15:56:10,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:56:10,970 INFO L225 Difference]: With dead ends: 282 [2020-12-01 15:56:10,971 INFO L226 Difference]: Without dead ends: 218 [2020-12-01 15:56:10,972 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 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 15:56:10,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-12-01 15:56:11,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-12-01 15:56:11,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-12-01 15:56:11,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-12-01 15:56:11,052 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-12-01 15:56:11,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:56:11,053 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-12-01 15:56:11,053 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-01 15:56:11,053 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-12-01 15:56:11,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-01 15:56:11,055 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:56:11,055 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:56:11,055 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-01 15:56:11,056 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:56:11,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:56:11,057 INFO L82 PathProgramCache]: Analyzing trace with hash 319392730, now seen corresponding path program 1 times [2020-12-01 15:56:11,057 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:56:11,057 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395241455] [2020-12-01 15:56:11,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:56:11,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:56:11,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:56:11,147 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395241455] [2020-12-01 15:56:11,147 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:56:11,147 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-01 15:56:11,147 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548253585] [2020-12-01 15:56:11,149 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 15:56:11,149 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:56:11,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 15:56:11,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 15:56:11,150 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 4 states. [2020-12-01 15:56:11,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:56:11,194 INFO L93 Difference]: Finished difference Result 278 states and 745 transitions. [2020-12-01 15:56:11,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 15:56:11,197 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-12-01 15:56:11,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:56:11,201 INFO L225 Difference]: With dead ends: 278 [2020-12-01 15:56:11,203 INFO L226 Difference]: Without dead ends: 182 [2020-12-01 15:56:11,204 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:56:11,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-12-01 15:56:11,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2020-12-01 15:56:11,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-12-01 15:56:11,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 481 transitions. [2020-12-01 15:56:11,232 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 481 transitions. Word has length 9 [2020-12-01 15:56:11,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:56:11,232 INFO L481 AbstractCegarLoop]: Abstraction has 182 states and 481 transitions. [2020-12-01 15:56:11,232 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 15:56:11,233 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 481 transitions. [2020-12-01 15:56:11,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-01 15:56:11,237 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:56:11,237 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:56:11,237 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-01 15:56:11,238 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:56:11,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:56:11,239 INFO L82 PathProgramCache]: Analyzing trace with hash 884125177, now seen corresponding path program 1 times [2020-12-01 15:56:11,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:56:11,240 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001774717] [2020-12-01 15:56:11,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:56:11,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:56:11,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:56:11,329 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001774717] [2020-12-01 15:56:11,329 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:56:11,330 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 15:56:11,330 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818899190] [2020-12-01 15:56:11,330 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 15:56:11,330 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:56:11,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 15:56:11,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 15:56:11,332 INFO L87 Difference]: Start difference. First operand 182 states and 481 transitions. Second operand 4 states. [2020-12-01 15:56:11,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:56:11,371 INFO L93 Difference]: Finished difference Result 218 states and 556 transitions. [2020-12-01 15:56:11,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-01 15:56:11,372 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-12-01 15:56:11,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:56:11,378 INFO L225 Difference]: With dead ends: 218 [2020-12-01 15:56:11,378 INFO L226 Difference]: Without dead ends: 146 [2020-12-01 15:56:11,379 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:56:11,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-12-01 15:56:11,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-12-01 15:56:11,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-12-01 15:56:11,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 362 transitions. [2020-12-01 15:56:11,403 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 362 transitions. Word has length 10 [2020-12-01 15:56:11,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:56:11,404 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 362 transitions. [2020-12-01 15:56:11,404 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 15:56:11,404 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 362 transitions. [2020-12-01 15:56:11,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-01 15:56:11,406 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:56:11,406 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:56:11,406 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-01 15:56:11,406 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:56:11,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:56:11,408 INFO L82 PathProgramCache]: Analyzing trace with hash 266199867, now seen corresponding path program 1 times [2020-12-01 15:56:11,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:56:11,409 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923249573] [2020-12-01 15:56:11,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:56:11,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:56:11,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:56:11,489 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923249573] [2020-12-01 15:56:11,489 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:56:11,489 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-01 15:56:11,489 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402482628] [2020-12-01 15:56:11,490 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 15:56:11,490 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:56:11,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 15:56:11,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 15:56:11,491 INFO L87 Difference]: Start difference. First operand 146 states and 362 transitions. Second operand 4 states. [2020-12-01 15:56:11,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:56:11,541 INFO L93 Difference]: Finished difference Result 165 states and 377 transitions. [2020-12-01 15:56:11,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-01 15:56:11,541 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-01 15:56:11,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:56:11,543 INFO L225 Difference]: With dead ends: 165 [2020-12-01 15:56:11,544 INFO L226 Difference]: Without dead ends: 125 [2020-12-01 15:56:11,544 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:56:11,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-12-01 15:56:11,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2020-12-01 15:56:11,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-12-01 15:56:11,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 284 transitions. [2020-12-01 15:56:11,572 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 284 transitions. Word has length 11 [2020-12-01 15:56:11,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:56:11,573 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 284 transitions. [2020-12-01 15:56:11,573 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 15:56:11,573 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 284 transitions. [2020-12-01 15:56:11,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-01 15:56:11,574 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:56:11,575 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:56:11,575 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-01 15:56:11,575 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:56:11,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:56:11,581 INFO L82 PathProgramCache]: Analyzing trace with hash -297551950, now seen corresponding path program 1 times [2020-12-01 15:56:11,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:56:11,582 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455029361] [2020-12-01 15:56:11,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:56:11,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:56:11,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:56:11,713 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455029361] [2020-12-01 15:56:11,714 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:56:11,714 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 15:56:11,715 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975363622] [2020-12-01 15:56:11,715 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-01 15:56:11,715 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:56:11,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-01 15:56:11,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:56:11,717 INFO L87 Difference]: Start difference. First operand 125 states and 284 transitions. Second operand 5 states. [2020-12-01 15:56:11,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:56:11,773 INFO L93 Difference]: Finished difference Result 122 states and 258 transitions. [2020-12-01 15:56:11,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-01 15:56:11,774 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-12-01 15:56:11,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:56:11,776 INFO L225 Difference]: With dead ends: 122 [2020-12-01 15:56:11,776 INFO L226 Difference]: Without dead ends: 97 [2020-12-01 15:56:11,777 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-01 15:56:11,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-12-01 15:56:11,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2020-12-01 15:56:11,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-12-01 15:56:11,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 202 transitions. [2020-12-01 15:56:11,790 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 202 transitions. Word has length 12 [2020-12-01 15:56:11,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:56:11,790 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 202 transitions. [2020-12-01 15:56:11,791 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-01 15:56:11,791 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 202 transitions. [2020-12-01 15:56:11,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-01 15:56:11,796 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:56:11,796 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:56:11,796 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-01 15:56:11,796 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:56:11,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:56:11,797 INFO L82 PathProgramCache]: Analyzing trace with hash 1813731877, now seen corresponding path program 1 times [2020-12-01 15:56:11,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:56:11,798 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358499801] [2020-12-01 15:56:11,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:56:11,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:56:11,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:56:11,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358499801] [2020-12-01 15:56:11,940 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:56:11,940 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-01 15:56:11,941 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014489190] [2020-12-01 15:56:11,941 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-01 15:56:11,942 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:56:11,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-01 15:56:11,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-01 15:56:11,949 INFO L87 Difference]: Start difference. First operand 97 states and 202 transitions. Second operand 6 states. [2020-12-01 15:56:12,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:56:12,009 INFO L93 Difference]: Finished difference Result 92 states and 190 transitions. [2020-12-01 15:56:12,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-01 15:56:12,010 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-12-01 15:56:12,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:56:12,011 INFO L225 Difference]: With dead ends: 92 [2020-12-01 15:56:12,011 INFO L226 Difference]: Without dead ends: 84 [2020-12-01 15:56:12,012 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-12-01 15:56:12,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-12-01 15:56:12,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2020-12-01 15:56:12,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-12-01 15:56:12,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 176 transitions. [2020-12-01 15:56:12,019 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 176 transitions. Word has length 14 [2020-12-01 15:56:12,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:56:12,019 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 176 transitions. [2020-12-01 15:56:12,020 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-01 15:56:12,020 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 176 transitions. [2020-12-01 15:56:12,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-01 15:56:12,022 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:56:12,022 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:56:12,022 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-01 15:56:12,022 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:56:12,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:56:12,026 INFO L82 PathProgramCache]: Analyzing trace with hash 1641541318, now seen corresponding path program 1 times [2020-12-01 15:56:12,026 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:56:12,026 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399694738] [2020-12-01 15:56:12,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:56:12,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:56:12,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:56:12,087 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399694738] [2020-12-01 15:56:12,087 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:56:12,087 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 15:56:12,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060149123] [2020-12-01 15:56:12,088 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 15:56:12,089 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:56:12,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 15:56:12,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 15:56:12,091 INFO L87 Difference]: Start difference. First operand 84 states and 176 transitions. Second operand 4 states. [2020-12-01 15:56:12,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:56:12,109 INFO L93 Difference]: Finished difference Result 97 states and 197 transitions. [2020-12-01 15:56:12,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 15:56:12,110 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-12-01 15:56:12,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:56:12,111 INFO L225 Difference]: With dead ends: 97 [2020-12-01 15:56:12,111 INFO L226 Difference]: Without dead ends: 36 [2020-12-01 15:56:12,113 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:56:12,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-12-01 15:56:12,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-12-01 15:56:12,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-12-01 15:56:12,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 56 transitions. [2020-12-01 15:56:12,116 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 56 transitions. Word has length 17 [2020-12-01 15:56:12,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:56:12,117 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 56 transitions. [2020-12-01 15:56:12,117 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 15:56:12,117 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 56 transitions. [2020-12-01 15:56:12,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-01 15:56:12,118 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:56:12,118 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:56:12,118 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-01 15:56:12,118 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:56:12,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:56:12,119 INFO L82 PathProgramCache]: Analyzing trace with hash -2114303388, now seen corresponding path program 2 times [2020-12-01 15:56:12,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:56:12,124 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698225493] [2020-12-01 15:56:12,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:56:12,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:56:12,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:56:12,197 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698225493] [2020-12-01 15:56:12,198 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:56:12,198 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 15:56:12,198 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709703321] [2020-12-01 15:56:12,199 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 15:56:12,199 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:56:12,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 15:56:12,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 15:56:12,200 INFO L87 Difference]: Start difference. First operand 36 states and 56 transitions. Second operand 4 states. [2020-12-01 15:56:12,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:56:12,221 INFO L93 Difference]: Finished difference Result 35 states and 55 transitions. [2020-12-01 15:56:12,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 15:56:12,222 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-12-01 15:56:12,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:56:12,223 INFO L225 Difference]: With dead ends: 35 [2020-12-01 15:56:12,223 INFO L226 Difference]: Without dead ends: 0 [2020-12-01 15:56:12,224 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:56:12,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-01 15:56:12,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-01 15:56:12,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-01 15:56:12,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-01 15:56:12,225 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-12-01 15:56:12,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:56:12,226 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-01 15:56:12,226 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 15:56:12,226 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-01 15:56:12,226 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-01 15:56:12,226 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-01 15:56:12,229 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 03:56:12 BasicIcfg [2020-12-01 15:56:12,229 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-01 15:56:12,230 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 15:56:12,230 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 15:56:12,230 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 15:56:12,230 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:56:05" (3/4) ... [2020-12-01 15:56:12,234 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-01 15:56:12,239 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-12-01 15:56:12,239 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-12-01 15:56:12,239 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-12-01 15:56:12,244 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-12-01 15:56:12,244 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-01 15:56:12,245 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-01 15:56:12,245 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-01 15:56:12,305 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_c623580d-2aba-4577-8fcd-d78701624507/bin/uautomizer/witness.graphml [2020-12-01 15:56:12,305 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 15:56:12,306 INFO L168 Benchmark]: Toolchain (without parser) took 8135.40 ms. Allocated memory was 75.5 MB in the beginning and 174.1 MB in the end (delta: 98.6 MB). Free memory was 38.8 MB in the beginning and 114.9 MB in the end (delta: -76.1 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. [2020-12-01 15:56:12,307 INFO L168 Benchmark]: CDTParser took 0.98 ms. Allocated memory is still 75.5 MB. Free memory was 56.3 MB in the beginning and 56.3 MB in the end (delta: 33.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:56:12,308 INFO L168 Benchmark]: CACSL2BoogieTranslator took 799.18 ms. Allocated memory was 75.5 MB in the beginning and 96.5 MB in the end (delta: 21.0 MB). Free memory was 38.6 MB in the beginning and 50.7 MB in the end (delta: -12.1 MB). Peak memory consumption was 8.7 MB. Max. memory is 16.1 GB. [2020-12-01 15:56:12,308 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.73 ms. Allocated memory is still 96.5 MB. Free memory was 50.7 MB in the beginning and 48.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 15:56:12,309 INFO L168 Benchmark]: Boogie Preprocessor took 30.26 ms. Allocated memory is still 96.5 MB. Free memory was 48.8 MB in the beginning and 47.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 15:56:12,310 INFO L168 Benchmark]: RCFGBuilder took 625.31 ms. Allocated memory is still 96.5 MB. Free memory was 47.5 MB in the beginning and 69.7 MB in the end (delta: -22.2 MB). Peak memory consumption was 20.7 MB. Max. memory is 16.1 GB. [2020-12-01 15:56:12,310 INFO L168 Benchmark]: TraceAbstraction took 6552.97 ms. Allocated memory was 96.5 MB in the beginning and 174.1 MB in the end (delta: 77.6 MB). Free memory was 69.2 MB in the beginning and 118.0 MB in the end (delta: -48.8 MB). Peak memory consumption was 27.2 MB. Max. memory is 16.1 GB. [2020-12-01 15:56:12,311 INFO L168 Benchmark]: Witness Printer took 75.45 ms. Allocated memory is still 174.1 MB. Free memory was 118.0 MB in the beginning and 114.9 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-01 15:56:12,314 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.98 ms. Allocated memory is still 75.5 MB. Free memory was 56.3 MB in the beginning and 56.3 MB in the end (delta: 33.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 799.18 ms. Allocated memory was 75.5 MB in the beginning and 96.5 MB in the end (delta: 21.0 MB). Free memory was 38.6 MB in the beginning and 50.7 MB in the end (delta: -12.1 MB). Peak memory consumption was 8.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 45.73 ms. Allocated memory is still 96.5 MB. Free memory was 50.7 MB in the beginning and 48.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 30.26 ms. Allocated memory is still 96.5 MB. Free memory was 48.8 MB in the beginning and 47.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 625.31 ms. Allocated memory is still 96.5 MB. Free memory was 47.5 MB in the beginning and 69.7 MB in the end (delta: -22.2 MB). Peak memory consumption was 20.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6552.97 ms. Allocated memory was 96.5 MB in the beginning and 174.1 MB in the end (delta: 77.6 MB). Free memory was 69.2 MB in the beginning and 118.0 MB in the end (delta: -48.8 MB). Peak memory consumption was 27.2 MB. Max. memory is 16.1 GB. * Witness Printer took 75.45 ms. Allocated memory is still 174.1 MB. Free memory was 118.0 MB in the beginning and 114.9 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 1015 VarBasedMoverChecksPositive, 51 VarBasedMoverChecksNegative, 12 SemBasedMoverChecksPositive, 39 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 75 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 4.6s, 86 PlacesBefore, 31 PlacesAfterwards, 79 TransitionsBefore, 22 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 6 FixpointIterations, 18 TrivialSequentialCompositions, 44 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 2 ChoiceCompositions, 72 TotalNumberOfCompositions, 2926 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: 6.4s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.7s, HoareTripleCheckerStatistics: 160 SDtfs, 156 SDslu, 222 SDs, 0 SdLazy, 117 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 98 NumberOfCodeBlocks, 98 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 90 ConstructedInterpolants, 0 QuantifiedInterpolants, 2936 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...