./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe037_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 678e0110 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_cd0caaad-051d-4a55-8916-7934dc4dd588/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_cd0caaad-051d-4a55-8916-7934dc4dd588/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_cd0caaad-051d-4a55-8916-7934dc4dd588/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_cd0caaad-051d-4a55-8916-7934dc4dd588/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe037_tso.opt.i -s /tmp/vcloud-vcloud-master/worker/run_dir_cd0caaad-051d-4a55-8916-7934dc4dd588/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_cd0caaad-051d-4a55-8916-7934dc4dd588/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 52fb212ec99341e6f9f48006fcd8fa26d0c18e53 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-678e011 [2019-11-20 01:02:35,761 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 01:02:35,763 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 01:02:35,773 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 01:02:35,774 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 01:02:35,774 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 01:02:35,776 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 01:02:35,778 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 01:02:35,780 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 01:02:35,781 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 01:02:35,782 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 01:02:35,783 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 01:02:35,783 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 01:02:35,784 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 01:02:35,785 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 01:02:35,786 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 01:02:35,787 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 01:02:35,788 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 01:02:35,790 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 01:02:35,792 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 01:02:35,793 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 01:02:35,794 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 01:02:35,795 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 01:02:35,796 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 01:02:35,799 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 01:02:35,799 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 01:02:35,799 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 01:02:35,800 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 01:02:35,800 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 01:02:35,801 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 01:02:35,802 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 01:02:35,802 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 01:02:35,803 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 01:02:35,804 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 01:02:35,805 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 01:02:35,805 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 01:02:35,806 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 01:02:35,806 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 01:02:35,806 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 01:02:35,807 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 01:02:35,808 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 01:02:35,808 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_cd0caaad-051d-4a55-8916-7934dc4dd588/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-20 01:02:35,820 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 01:02:35,821 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 01:02:35,822 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 01:02:35,822 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 01:02:35,822 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 01:02:35,822 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 01:02:35,822 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 01:02:35,823 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 01:02:35,823 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 01:02:35,823 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 01:02:35,823 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-20 01:02:35,823 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 01:02:35,824 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-20 01:02:35,824 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 01:02:35,824 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 01:02:35,824 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 01:02:35,825 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-20 01:02:35,825 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 01:02:35,825 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 01:02:35,825 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 01:02:35,825 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 01:02:35,826 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 01:02:35,826 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 01:02:35,826 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 01:02:35,826 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-20 01:02:35,827 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-20 01:02:35,827 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-20 01:02:35,827 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-20 01:02:35,827 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_cd0caaad-051d-4a55-8916-7934dc4dd588/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(__VERIFIER_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 -> 52fb212ec99341e6f9f48006fcd8fa26d0c18e53 [2019-11-20 01:02:35,955 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 01:02:35,965 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 01:02:35,967 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 01:02:35,969 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 01:02:35,969 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 01:02:35,970 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_cd0caaad-051d-4a55-8916-7934dc4dd588/bin/uautomizer/../../sv-benchmarks/c/pthread-wmm/safe037_tso.opt.i [2019-11-20 01:02:36,016 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_cd0caaad-051d-4a55-8916-7934dc4dd588/bin/uautomizer/data/e850e0820/384408b89c7c4bd2a91f3bbb80533d4e/FLAG34e8e3134 [2019-11-20 01:02:36,508 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 01:02:36,509 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_cd0caaad-051d-4a55-8916-7934dc4dd588/sv-benchmarks/c/pthread-wmm/safe037_tso.opt.i [2019-11-20 01:02:36,527 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_cd0caaad-051d-4a55-8916-7934dc4dd588/bin/uautomizer/data/e850e0820/384408b89c7c4bd2a91f3bbb80533d4e/FLAG34e8e3134 [2019-11-20 01:02:36,987 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_cd0caaad-051d-4a55-8916-7934dc4dd588/bin/uautomizer/data/e850e0820/384408b89c7c4bd2a91f3bbb80533d4e [2019-11-20 01:02:36,989 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 01:02:36,990 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 01:02:36,990 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 01:02:36,991 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 01:02:36,994 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 01:02:36,994 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 01:02:36" (1/1) ... [2019-11-20 01:02:36,996 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5817f44c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:02:36, skipping insertion in model container [2019-11-20 01:02:36,997 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 01:02:36" (1/1) ... [2019-11-20 01:02:37,002 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 01:02:37,041 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 01:02:37,396 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 01:02:37,405 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 01:02:37,441 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 01:02:37,512 INFO L192 MainTranslator]: Completed translation [2019-11-20 01:02:37,513 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:02:37 WrapperNode [2019-11-20 01:02:37,513 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 01:02:37,514 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 01:02:37,514 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 01:02:37,514 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 01:02:37,521 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:02:37" (1/1) ... [2019-11-20 01:02:37,535 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:02:37" (1/1) ... [2019-11-20 01:02:37,554 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 01:02:37,555 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 01:02:37,555 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 01:02:37,555 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 01:02:37,563 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:02:37" (1/1) ... [2019-11-20 01:02:37,563 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:02:37" (1/1) ... [2019-11-20 01:02:37,566 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:02:37" (1/1) ... [2019-11-20 01:02:37,566 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:02:37" (1/1) ... [2019-11-20 01:02:37,572 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:02:37" (1/1) ... [2019-11-20 01:02:37,574 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:02:37" (1/1) ... [2019-11-20 01:02:37,576 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:02:37" (1/1) ... [2019-11-20 01:02:37,579 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 01:02:37,579 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 01:02:37,579 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 01:02:37,579 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 01:02:37,580 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:02:37" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cd0caaad-051d-4a55-8916-7934dc4dd588/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 [2019-11-20 01:02:37,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-20 01:02:37,646 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-11-20 01:02:37,646 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-20 01:02:37,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-20 01:02:37,647 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2019-11-20 01:02:37,647 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2019-11-20 01:02:37,647 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2019-11-20 01:02:37,647 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2019-11-20 01:02:37,647 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2019-11-20 01:02:37,648 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2019-11-20 01:02:37,648 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-11-20 01:02:37,648 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 01:02:37,648 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 01:02:37,651 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-11-20 01:02:37,995 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 01:02:37,995 INFO L285 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-20 01:02:37,996 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 01:02:37 BoogieIcfgContainer [2019-11-20 01:02:37,996 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 01:02:37,997 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 01:02:37,998 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 01:02:38,000 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 01:02:38,000 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 01:02:36" (1/3) ... [2019-11-20 01:02:38,001 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19e65849 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 01:02:38, skipping insertion in model container [2019-11-20 01:02:38,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:02:37" (2/3) ... [2019-11-20 01:02:38,002 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19e65849 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 01:02:38, skipping insertion in model container [2019-11-20 01:02:38,002 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 01:02:37" (3/3) ... [2019-11-20 01:02:38,003 INFO L109 eAbstractionObserver]: Analyzing ICFG safe037_tso.opt.i [2019-11-20 01:02:38,047 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 01:02:38,047 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 01:02:38,047 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 01:02:38,047 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 01:02:38,048 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 01:02:38,048 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 01:02:38,048 WARN L315 ript$VariableManager]: TermVariabe |P0Thread3of3ForFork7_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 01:02:38,049 WARN L315 ript$VariableManager]: TermVariabe |P0Thread3of3ForFork7_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 01:02:38,049 WARN L315 ript$VariableManager]: TermVariabe P0Thread3of3ForFork7_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 01:02:38,049 WARN L315 ript$VariableManager]: TermVariabe P0Thread3of3ForFork7_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 01:02:38,049 WARN L315 ript$VariableManager]: TermVariabe |P0Thread3of3ForFork7_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 01:02:38,049 WARN L315 ript$VariableManager]: TermVariabe |P0Thread3of3ForFork7_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 01:02:38,050 WARN L315 ript$VariableManager]: TermVariabe |P0Thread2of3ForFork4_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 01:02:38,050 WARN L315 ript$VariableManager]: TermVariabe |P0Thread2of3ForFork4_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 01:02:38,050 WARN L315 ript$VariableManager]: TermVariabe P0Thread2of3ForFork4_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 01:02:38,050 WARN L315 ript$VariableManager]: TermVariabe P0Thread2of3ForFork4_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 01:02:38,051 WARN L315 ript$VariableManager]: TermVariabe |P0Thread2of3ForFork4_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 01:02:38,051 WARN L315 ript$VariableManager]: TermVariabe |P0Thread2of3ForFork4_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 01:02:38,051 WARN L315 ript$VariableManager]: TermVariabe |P1Thread2of3ForFork5_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 01:02:38,051 WARN L315 ript$VariableManager]: TermVariabe |P1Thread2of3ForFork5_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 01:02:38,051 WARN L315 ript$VariableManager]: TermVariabe P1Thread2of3ForFork5_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 01:02:38,052 WARN L315 ript$VariableManager]: TermVariabe P1Thread2of3ForFork5_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 01:02:38,052 WARN L315 ript$VariableManager]: TermVariabe |P1Thread2of3ForFork5_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 01:02:38,052 WARN L315 ript$VariableManager]: TermVariabe |P1Thread2of3ForFork5_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 01:02:38,052 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of3ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 01:02:38,053 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of3ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 01:02:38,053 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of3ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 01:02:38,053 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of3ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 01:02:38,053 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of3ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 01:02:38,053 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of3ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 01:02:38,054 WARN L315 ript$VariableManager]: TermVariabe |P1Thread3of3ForFork8_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 01:02:38,054 WARN L315 ript$VariableManager]: TermVariabe |P1Thread3of3ForFork8_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 01:02:38,054 WARN L315 ript$VariableManager]: TermVariabe P1Thread3of3ForFork8_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 01:02:38,054 WARN L315 ript$VariableManager]: TermVariabe P1Thread3of3ForFork8_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 01:02:38,055 WARN L315 ript$VariableManager]: TermVariabe |P1Thread3of3ForFork8_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 01:02:38,055 WARN L315 ript$VariableManager]: TermVariabe |P1Thread3of3ForFork8_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 01:02:38,055 WARN L315 ript$VariableManager]: TermVariabe |P2Thread3of3ForFork6_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 01:02:38,055 WARN L315 ript$VariableManager]: TermVariabe |P2Thread3of3ForFork6_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 01:02:38,055 WARN L315 ript$VariableManager]: TermVariabe P2Thread3of3ForFork6_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 01:02:38,056 WARN L315 ript$VariableManager]: TermVariabe P2Thread3of3ForFork6_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 01:02:38,056 WARN L315 ript$VariableManager]: TermVariabe |P2Thread3of3ForFork6_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 01:02:38,056 WARN L315 ript$VariableManager]: TermVariabe |P2Thread3of3ForFork6_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 01:02:38,056 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 01:02:38,057 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 01:02:38,057 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 01:02:38,057 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 01:02:38,057 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 01:02:38,057 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 01:02:38,058 WARN L315 ript$VariableManager]: TermVariabe |P2Thread2of3ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 01:02:38,058 WARN L315 ript$VariableManager]: TermVariabe |P2Thread2of3ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 01:02:38,058 WARN L315 ript$VariableManager]: TermVariabe P2Thread2of3ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 01:02:38,058 WARN L315 ript$VariableManager]: TermVariabe P2Thread2of3ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 01:02:38,058 WARN L315 ript$VariableManager]: TermVariabe |P2Thread2of3ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 01:02:38,059 WARN L315 ript$VariableManager]: TermVariabe |P2Thread2of3ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-20 01:02:38,089 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-11-20 01:02:38,089 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 01:02:38,094 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-20 01:02:38,104 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-20 01:02:38,120 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 01:02:38,120 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-20 01:02:38,120 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 01:02:38,121 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 01:02:38,121 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 01:02:38,121 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 01:02:38,121 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 01:02:38,121 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 01:02:38,131 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 97 places, 76 transitions [2019-11-20 01:02:41,122 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 31745 states. [2019-11-20 01:02:41,124 INFO L276 IsEmpty]: Start isEmpty. Operand 31745 states. [2019-11-20 01:02:41,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-11-20 01:02:41,179 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 01:02:41,179 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 01:02:41,180 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 01:02:41,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:02:41,185 INFO L82 PathProgramCache]: Analyzing trace with hash -461674589, now seen corresponding path program 1 times [2019-11-20 01:02:41,192 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 01:02:41,193 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127230132] [2019-11-20 01:02:41,193 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 01:02:41,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:02:41,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 01:02:41,463 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127230132] [2019-11-20 01:02:41,464 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 01:02:41,464 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-20 01:02:41,465 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832076269] [2019-11-20 01:02:41,469 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-20 01:02:41,470 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 01:02:41,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 01:02:41,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-20 01:02:41,485 INFO L87 Difference]: Start difference. First operand 31745 states. Second operand 4 states. [2019-11-20 01:02:42,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 01:02:42,094 INFO L93 Difference]: Finished difference Result 33014 states and 103294 transitions. [2019-11-20 01:02:42,094 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-20 01:02:42,096 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2019-11-20 01:02:42,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 01:02:42,228 INFO L225 Difference]: With dead ends: 33014 [2019-11-20 01:02:42,229 INFO L226 Difference]: Without dead ends: 14276 [2019-11-20 01:02:42,230 INFO L630 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 [2019-11-20 01:02:42,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14276 states. [2019-11-20 01:02:42,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14276 to 14276. [2019-11-20 01:02:42,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14276 states. [2019-11-20 01:02:42,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14276 states to 14276 states and 44299 transitions. [2019-11-20 01:02:42,835 INFO L78 Accepts]: Start accepts. Automaton has 14276 states and 44299 transitions. Word has length 32 [2019-11-20 01:02:42,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 01:02:42,836 INFO L462 AbstractCegarLoop]: Abstraction has 14276 states and 44299 transitions. [2019-11-20 01:02:42,837 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-20 01:02:42,837 INFO L276 IsEmpty]: Start isEmpty. Operand 14276 states and 44299 transitions. [2019-11-20 01:02:42,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-11-20 01:02:42,861 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 01:02:42,861 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 01:02:42,862 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 01:02:42,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:02:42,862 INFO L82 PathProgramCache]: Analyzing trace with hash -273643049, now seen corresponding path program 1 times [2019-11-20 01:02:42,862 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 01:02:42,863 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500275146] [2019-11-20 01:02:42,863 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 01:02:42,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:02:42,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 01:02:42,973 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500275146] [2019-11-20 01:02:42,974 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 01:02:42,974 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-20 01:02:42,974 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78468988] [2019-11-20 01:02:42,975 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-20 01:02:42,975 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 01:02:42,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-20 01:02:42,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-20 01:02:42,976 INFO L87 Difference]: Start difference. First operand 14276 states and 44299 transitions. Second operand 5 states. [2019-11-20 01:02:43,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 01:02:43,280 INFO L93 Difference]: Finished difference Result 14276 states and 42112 transitions. [2019-11-20 01:02:43,280 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-20 01:02:43,281 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2019-11-20 01:02:43,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 01:02:43,338 INFO L225 Difference]: With dead ends: 14276 [2019-11-20 01:02:43,338 INFO L226 Difference]: Without dead ends: 12575 [2019-11-20 01:02:43,339 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-11-20 01:02:43,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12575 states. [2019-11-20 01:02:43,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12575 to 12575. [2019-11-20 01:02:43,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12575 states. [2019-11-20 01:02:43,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12575 states to 12575 states and 38062 transitions. [2019-11-20 01:02:43,832 INFO L78 Accepts]: Start accepts. Automaton has 12575 states and 38062 transitions. Word has length 33 [2019-11-20 01:02:43,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 01:02:43,833 INFO L462 AbstractCegarLoop]: Abstraction has 12575 states and 38062 transitions. [2019-11-20 01:02:43,833 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-20 01:02:43,833 INFO L276 IsEmpty]: Start isEmpty. Operand 12575 states and 38062 transitions. [2019-11-20 01:02:43,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-11-20 01:02:43,860 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 01:02:43,860 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 01:02:43,860 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 01:02:43,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:02:43,861 INFO L82 PathProgramCache]: Analyzing trace with hash -1968317883, now seen corresponding path program 1 times [2019-11-20 01:02:43,861 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 01:02:43,862 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707444441] [2019-11-20 01:02:43,862 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 01:02:43,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:02:43,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 01:02:43,989 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707444441] [2019-11-20 01:02:43,989 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 01:02:43,990 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-20 01:02:43,990 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646184528] [2019-11-20 01:02:43,990 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-20 01:02:43,990 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 01:02:43,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-20 01:02:43,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-20 01:02:43,991 INFO L87 Difference]: Start difference. First operand 12575 states and 38062 transitions. Second operand 6 states. [2019-11-20 01:02:44,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 01:02:44,251 INFO L93 Difference]: Finished difference Result 8930 states and 24940 transitions. [2019-11-20 01:02:44,252 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-20 01:02:44,252 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 34 [2019-11-20 01:02:44,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 01:02:44,273 INFO L225 Difference]: With dead ends: 8930 [2019-11-20 01:02:44,274 INFO L226 Difference]: Without dead ends: 7472 [2019-11-20 01:02:44,274 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2019-11-20 01:02:44,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7472 states. [2019-11-20 01:02:44,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7472 to 7472. [2019-11-20 01:02:44,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7472 states. [2019-11-20 01:02:44,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7472 states to 7472 states and 21052 transitions. [2019-11-20 01:02:44,728 INFO L78 Accepts]: Start accepts. Automaton has 7472 states and 21052 transitions. Word has length 34 [2019-11-20 01:02:44,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 01:02:44,729 INFO L462 AbstractCegarLoop]: Abstraction has 7472 states and 21052 transitions. [2019-11-20 01:02:44,729 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-20 01:02:44,729 INFO L276 IsEmpty]: Start isEmpty. Operand 7472 states and 21052 transitions. [2019-11-20 01:02:44,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-11-20 01:02:44,743 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 01:02:44,743 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 01:02:44,743 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 01:02:44,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:02:44,744 INFO L82 PathProgramCache]: Analyzing trace with hash 397873402, now seen corresponding path program 1 times [2019-11-20 01:02:44,744 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 01:02:44,744 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924805282] [2019-11-20 01:02:44,744 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 01:02:44,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:02:44,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 01:02:44,899 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924805282] [2019-11-20 01:02:44,900 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 01:02:44,900 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-20 01:02:44,900 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021651194] [2019-11-20 01:02:44,900 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-20 01:02:44,900 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 01:02:44,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-20 01:02:44,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-20 01:02:44,901 INFO L87 Difference]: Start difference. First operand 7472 states and 21052 transitions. Second operand 7 states. [2019-11-20 01:02:45,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 01:02:45,131 INFO L93 Difference]: Finished difference Result 12089 states and 34012 transitions. [2019-11-20 01:02:45,131 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-20 01:02:45,132 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2019-11-20 01:02:45,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 01:02:45,151 INFO L225 Difference]: With dead ends: 12089 [2019-11-20 01:02:45,152 INFO L226 Difference]: Without dead ends: 7472 [2019-11-20 01:02:45,152 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2019-11-20 01:02:45,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7472 states. [2019-11-20 01:02:45,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7472 to 7229. [2019-11-20 01:02:45,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7229 states. [2019-11-20 01:02:45,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7229 states to 7229 states and 20323 transitions. [2019-11-20 01:02:45,332 INFO L78 Accepts]: Start accepts. Automaton has 7229 states and 20323 transitions. Word has length 35 [2019-11-20 01:02:45,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 01:02:45,333 INFO L462 AbstractCegarLoop]: Abstraction has 7229 states and 20323 transitions. [2019-11-20 01:02:45,333 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-20 01:02:45,333 INFO L276 IsEmpty]: Start isEmpty. Operand 7229 states and 20323 transitions. [2019-11-20 01:02:45,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-11-20 01:02:45,346 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 01:02:45,347 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 01:02:45,347 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 01:02:45,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:02:45,347 INFO L82 PathProgramCache]: Analyzing trace with hash -1836234092, now seen corresponding path program 2 times [2019-11-20 01:02:45,348 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 01:02:45,348 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511169803] [2019-11-20 01:02:45,348 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 01:02:45,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:02:45,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 01:02:45,514 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511169803] [2019-11-20 01:02:45,514 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 01:02:45,515 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-20 01:02:45,515 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462728536] [2019-11-20 01:02:45,515 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-20 01:02:45,515 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 01:02:45,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-20 01:02:45,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-20 01:02:45,516 INFO L87 Difference]: Start difference. First operand 7229 states and 20323 transitions. Second operand 7 states. [2019-11-20 01:02:45,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 01:02:45,729 INFO L93 Difference]: Finished difference Result 11603 states and 32716 transitions. [2019-11-20 01:02:45,729 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-20 01:02:45,730 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2019-11-20 01:02:45,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 01:02:45,746 INFO L225 Difference]: With dead ends: 11603 [2019-11-20 01:02:45,746 INFO L226 Difference]: Without dead ends: 6437 [2019-11-20 01:02:45,747 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2019-11-20 01:02:45,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6437 states. [2019-11-20 01:02:45,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6437 to 6437. [2019-11-20 01:02:45,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6437 states. [2019-11-20 01:02:45,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6437 states to 6437 states and 18019 transitions. [2019-11-20 01:02:45,899 INFO L78 Accepts]: Start accepts. Automaton has 6437 states and 18019 transitions. Word has length 35 [2019-11-20 01:02:45,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 01:02:45,899 INFO L462 AbstractCegarLoop]: Abstraction has 6437 states and 18019 transitions. [2019-11-20 01:02:45,899 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-20 01:02:45,899 INFO L276 IsEmpty]: Start isEmpty. Operand 6437 states and 18019 transitions. [2019-11-20 01:02:45,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-11-20 01:02:45,910 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 01:02:45,911 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 01:02:45,911 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 01:02:45,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:02:45,911 INFO L82 PathProgramCache]: Analyzing trace with hash -647246200, now seen corresponding path program 3 times [2019-11-20 01:02:45,912 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 01:02:45,912 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574636975] [2019-11-20 01:02:45,912 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 01:02:45,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:02:46,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 01:02:46,032 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574636975] [2019-11-20 01:02:46,032 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 01:02:46,032 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-20 01:02:46,032 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084468085] [2019-11-20 01:02:46,033 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-20 01:02:46,033 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 01:02:46,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-20 01:02:46,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-11-20 01:02:46,033 INFO L87 Difference]: Start difference. First operand 6437 states and 18019 transitions. Second operand 8 states. [2019-11-20 01:02:46,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 01:02:46,199 INFO L93 Difference]: Finished difference Result 11054 states and 30979 transitions. [2019-11-20 01:02:46,200 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-20 01:02:46,200 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 35 [2019-11-20 01:02:46,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 01:02:46,217 INFO L225 Difference]: With dead ends: 11054 [2019-11-20 01:02:46,217 INFO L226 Difference]: Without dead ends: 6356 [2019-11-20 01:02:46,218 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2019-11-20 01:02:46,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6356 states. [2019-11-20 01:02:46,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6356 to 6356. [2019-11-20 01:02:46,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6356 states. [2019-11-20 01:02:46,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6356 states to 6356 states and 17857 transitions. [2019-11-20 01:02:46,367 INFO L78 Accepts]: Start accepts. Automaton has 6356 states and 17857 transitions. Word has length 35 [2019-11-20 01:02:46,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 01:02:46,369 INFO L462 AbstractCegarLoop]: Abstraction has 6356 states and 17857 transitions. [2019-11-20 01:02:46,369 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-20 01:02:46,369 INFO L276 IsEmpty]: Start isEmpty. Operand 6356 states and 17857 transitions. [2019-11-20 01:02:46,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-11-20 01:02:46,377 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 01:02:46,378 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 01:02:46,378 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 01:02:46,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:02:46,378 INFO L82 PathProgramCache]: Analyzing trace with hash -1185101778, now seen corresponding path program 4 times [2019-11-20 01:02:46,378 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 01:02:46,379 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585068890] [2019-11-20 01:02:46,379 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 01:02:46,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:02:46,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 01:02:46,481 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585068890] [2019-11-20 01:02:46,481 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 01:02:46,481 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-20 01:02:46,481 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933540377] [2019-11-20 01:02:46,481 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-20 01:02:46,481 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 01:02:46,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-20 01:02:46,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-20 01:02:46,482 INFO L87 Difference]: Start difference. First operand 6356 states and 17857 transitions. Second operand 7 states. [2019-11-20 01:02:46,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 01:02:46,618 INFO L93 Difference]: Finished difference Result 4898 states and 13483 transitions. [2019-11-20 01:02:46,618 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-20 01:02:46,618 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2019-11-20 01:02:46,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 01:02:46,618 INFO L225 Difference]: With dead ends: 4898 [2019-11-20 01:02:46,618 INFO L226 Difference]: Without dead ends: 0 [2019-11-20 01:02:46,619 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2019-11-20 01:02:46,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-20 01:02:46,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-20 01:02:46,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-20 01:02:46,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-20 01:02:46,620 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 35 [2019-11-20 01:02:46,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 01:02:46,620 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 01:02:46,620 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-20 01:02:46,621 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-20 01:02:46,621 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-20 01:02:46,623 INFO L304 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2019-11-20 01:02:46,625 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 01:02:46 BasicIcfg [2019-11-20 01:02:46,625 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-20 01:02:46,626 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 01:02:46,626 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 01:02:46,626 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 01:02:46,627 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 01:02:37" (3/4) ... [2019-11-20 01:02:46,630 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-20 01:02:46,645 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2019-11-20 01:02:46,656 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2019-11-20 01:02:46,656 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2019-11-20 01:02:46,660 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2019-11-20 01:02:46,660 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-20 01:02:46,661 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-20 01:02:46,704 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_cd0caaad-051d-4a55-8916-7934dc4dd588/bin/uautomizer/witness.graphml [2019-11-20 01:02:46,704 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 01:02:46,706 INFO L168 Benchmark]: Toolchain (without parser) took 9715.68 ms. Allocated memory was 1.0 GB in the beginning and 1.5 GB in the end (delta: 497.5 MB). Free memory was 947.4 MB in the beginning and 850.4 MB in the end (delta: 97.0 MB). Peak memory consumption was 594.6 MB. Max. memory is 11.5 GB. [2019-11-20 01:02:46,707 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 01:02:46,707 INFO L168 Benchmark]: CACSL2BoogieTranslator took 522.69 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.1 MB). Free memory was 947.4 MB in the beginning and 1.1 GB in the end (delta: -162.1 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. [2019-11-20 01:02:46,708 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.86 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 01:02:46,708 INFO L168 Benchmark]: Boogie Preprocessor took 24.13 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 01:02:46,709 INFO L168 Benchmark]: RCFGBuilder took 417.58 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 27.8 MB). Peak memory consumption was 27.8 MB. Max. memory is 11.5 GB. [2019-11-20 01:02:46,709 INFO L168 Benchmark]: TraceAbstraction took 8628.03 ms. Allocated memory was 1.2 GB in the beginning and 1.5 GB in the end (delta: 354.4 MB). Free memory was 1.1 GB in the beginning and 854.0 MB in the end (delta: 227.7 MB). Peak memory consumption was 582.1 MB. Max. memory is 11.5 GB. [2019-11-20 01:02:46,710 INFO L168 Benchmark]: Witness Printer took 78.60 ms. Allocated memory is still 1.5 GB. Free memory was 854.0 MB in the beginning and 850.4 MB in the end (delta: 3.7 MB). Peak memory consumption was 3.7 MB. Max. memory is 11.5 GB. [2019-11-20 01:02:46,712 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 522.69 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.1 MB). Free memory was 947.4 MB in the beginning and 1.1 GB in the end (delta: -162.1 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 40.86 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 24.13 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 417.58 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 27.8 MB). Peak memory consumption was 27.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 8628.03 ms. Allocated memory was 1.2 GB in the beginning and 1.5 GB in the end (delta: 354.4 MB). Free memory was 1.1 GB in the beginning and 854.0 MB in the end (delta: 227.7 MB). Peak memory consumption was 582.1 MB. Max. memory is 11.5 GB. * Witness Printer took 78.60 ms. Allocated memory is still 1.5 GB. Free memory was 854.0 MB in the beginning and 850.4 MB in the end (delta: 3.7 MB). Peak memory consumption was 3.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: 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 13 procedures, 91 locations, 1 error locations. Result: SAFE, OverallTime: 8.5s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 737 SDtfs, 901 SDslu, 1973 SDs, 0 SdLazy, 264 SolverSat, 106 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 66 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31745occurred 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: 2.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 243 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 239 NumberOfCodeBlocks, 239 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 232 ConstructedInterpolants, 0 QuantifiedInterpolants, 21714 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...