./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe019_tso.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_aa4f5222-d314-4372-bb43-b49a39f99d36/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_aa4f5222-d314-4372-bb43-b49a39f99d36/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_aa4f5222-d314-4372-bb43-b49a39f99d36/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_aa4f5222-d314-4372-bb43-b49a39f99d36/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe019_tso.oepc.i -s /tmp/vcloud-vcloud-master/worker/working_dir_aa4f5222-d314-4372-bb43-b49a39f99d36/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_aa4f5222-d314-4372-bb43-b49a39f99d36/bin/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c4ebb3963532eccd4f10e73b309a7bd52d2534b9 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 11:20:56,030 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:20:56,033 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:20:56,044 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:20:56,044 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:20:56,045 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:20:56,046 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:20:56,048 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:20:56,049 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:20:56,050 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:20:56,051 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:20:56,052 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:20:56,052 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:20:56,053 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:20:56,053 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:20:56,054 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:20:56,055 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:20:56,056 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:20:56,057 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:20:56,059 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:20:56,060 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:20:56,061 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:20:56,062 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:20:56,063 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:20:56,064 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:20:56,065 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:20:56,065 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:20:56,065 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:20:56,066 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:20:56,067 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:20:56,067 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:20:56,067 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:20:56,068 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:20:56,069 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:20:56,070 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:20:56,070 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:20:56,070 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:20:56,071 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:20:56,071 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:20:56,072 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:20:56,072 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:20:56,073 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_aa4f5222-d314-4372-bb43-b49a39f99d36/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-10-22 11:20:56,083 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:20:56,083 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:20:56,084 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:20:56,084 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:20:56,085 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:20:56,085 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:20:56,085 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-10-22 11:20:56,085 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:20:56,085 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:20:56,086 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-10-22 11:20:56,086 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-10-22 11:20:56,086 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:20:56,086 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:20:56,087 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 11:20:56,087 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 11:20:56,087 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 11:20:56,087 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:20:56,087 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 11:20:56,087 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:20:56,088 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 11:20:56,088 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 11:20:56,088 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 11:20:56,088 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 11:20:56,089 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:20:56,089 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:20:56,092 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:20:56,092 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:20:56,093 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:20:56,093 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:20:56,093 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:20:56,093 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 11:20:56,093 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-22 11:20:56,094 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 11:20:56,094 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 11:20:56,094 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:20:56,094 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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/working_dir_aa4f5222-d314-4372-bb43-b49a39f99d36/bin/utaipan 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 -> Taipan 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 -> c4ebb3963532eccd4f10e73b309a7bd52d2534b9 [2019-10-22 11:20:56,133 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:20:56,141 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:20:56,144 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:20:56,146 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:20:56,146 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:20:56,147 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_aa4f5222-d314-4372-bb43-b49a39f99d36/bin/utaipan/../../sv-benchmarks/c/pthread-wmm/safe019_tso.oepc.i [2019-10-22 11:20:56,195 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_aa4f5222-d314-4372-bb43-b49a39f99d36/bin/utaipan/data/932f1e816/bf0ab1e28c6e422bbba2b4a95ed9db59/FLAG68cbc246b [2019-10-22 11:20:56,644 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:20:56,645 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_aa4f5222-d314-4372-bb43-b49a39f99d36/sv-benchmarks/c/pthread-wmm/safe019_tso.oepc.i [2019-10-22 11:20:56,658 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_aa4f5222-d314-4372-bb43-b49a39f99d36/bin/utaipan/data/932f1e816/bf0ab1e28c6e422bbba2b4a95ed9db59/FLAG68cbc246b [2019-10-22 11:20:56,973 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_aa4f5222-d314-4372-bb43-b49a39f99d36/bin/utaipan/data/932f1e816/bf0ab1e28c6e422bbba2b4a95ed9db59 [2019-10-22 11:20:56,975 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:20:56,976 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:20:56,977 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:20:56,979 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:20:56,982 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:20:56,983 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:20:56" (1/1) ... [2019-10-22 11:20:56,985 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ac1ccf0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:20:56, skipping insertion in model container [2019-10-22 11:20:56,985 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:20:56" (1/1) ... [2019-10-22 11:20:56,991 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:20:57,034 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:20:57,490 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:20:57,503 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:20:57,551 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:20:57,606 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:20:57,606 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:20:57 WrapperNode [2019-10-22 11:20:57,606 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:20:57,607 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:20:57,607 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:20:57,607 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:20:57,615 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:20:57" (1/1) ... [2019-10-22 11:20:57,628 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:20:57" (1/1) ... [2019-10-22 11:20:57,644 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:20:57,645 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:20:57,645 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:20:57,645 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:20:57,653 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:20:57" (1/1) ... [2019-10-22 11:20:57,654 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:20:57" (1/1) ... [2019-10-22 11:20:57,656 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:20:57" (1/1) ... [2019-10-22 11:20:57,656 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:20:57" (1/1) ... [2019-10-22 11:20:57,661 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:20:57" (1/1) ... [2019-10-22 11:20:57,672 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:20:57" (1/1) ... [2019-10-22 11:20:57,674 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:20:57" (1/1) ... [2019-10-22 11:20:57,676 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:20:57,677 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:20:57,677 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:20:57,677 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:20:57,678 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:20:57" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_aa4f5222-d314-4372-bb43-b49a39f99d36/bin/utaipan/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 [2019-10-22 11:20:57,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-22 11:20:57,741 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-10-22 11:20:57,741 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 11:20:57,742 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-22 11:20:57,742 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2019-10-22 11:20:57,743 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2019-10-22 11:20:57,743 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2019-10-22 11:20:57,743 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2019-10-22 11:20:57,743 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2019-10-22 11:20:57,743 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2019-10-22 11:20:57,743 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2019-10-22 11:20:57,744 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2019-10-22 11:20:57,744 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-10-22 11:20:57,744 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:20:57,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:20:57,746 WARN L202 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-10-22 11:20:58,030 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:20:58,030 INFO L284 CfgBuilder]: Removed 6 assume(true) statements. [2019-10-22 11:20:58,031 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:20:58 BoogieIcfgContainer [2019-10-22 11:20:58,032 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:20:58,032 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:20:58,032 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:20:58,035 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:20:58,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:20:56" (1/3) ... [2019-10-22 11:20:58,036 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ae96251 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:20:58, skipping insertion in model container [2019-10-22 11:20:58,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:20:57" (2/3) ... [2019-10-22 11:20:58,037 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ae96251 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:20:58, skipping insertion in model container [2019-10-22 11:20:58,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:20:58" (3/3) ... [2019-10-22 11:20:58,038 INFO L109 eAbstractionObserver]: Analyzing ICFG safe019_tso.oepc.i [2019-10-22 11:20:58,069 WARN L315 ript$VariableManager]: TermVariabe |Thread3_P0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:20:58,069 WARN L315 ript$VariableManager]: TermVariabe |Thread3_P0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:20:58,070 WARN L315 ript$VariableManager]: TermVariabe Thread3_P0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:20:58,070 WARN L315 ript$VariableManager]: TermVariabe Thread3_P0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:20:58,070 WARN L315 ript$VariableManager]: TermVariabe |Thread3_P0_#t~nondet3.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:20:58,070 WARN L315 ript$VariableManager]: TermVariabe |Thread3_P0_#t~nondet3.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:20:58,070 WARN L315 ript$VariableManager]: TermVariabe |Thread3_P0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:20:58,070 WARN L315 ript$VariableManager]: TermVariabe |Thread3_P0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:20:58,071 WARN L315 ript$VariableManager]: TermVariabe |Thread3_P0_#t~nondet3.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:20:58,071 WARN L315 ript$VariableManager]: TermVariabe |Thread3_P0_#t~nondet3.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:20:58,071 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:20:58,071 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:20:58,071 WARN L315 ript$VariableManager]: TermVariabe Thread0_P1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:20:58,071 WARN L315 ript$VariableManager]: TermVariabe Thread0_P1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:20:58,072 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P1_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:20:58,072 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P1_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:20:58,072 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:20:58,073 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:20:58,073 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P1_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:20:58,073 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P1_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:20:58,073 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:20:58,073 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:20:58,073 WARN L315 ript$VariableManager]: TermVariabe Thread1_P2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:20:58,074 WARN L315 ript$VariableManager]: TermVariabe Thread1_P2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:20:58,074 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P2_#t~nondet5.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:20:58,074 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P2_#t~nondet5.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:20:58,074 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:20:58,074 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:20:58,074 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P2_#t~nondet5.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:20:58,075 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P2_#t~nondet5.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:20:58,075 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:20:58,075 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:20:58,075 WARN L315 ript$VariableManager]: TermVariabe Thread2_P3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:20:58,075 WARN L315 ript$VariableManager]: TermVariabe Thread2_P3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:20:58,075 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P3_#t~nondet6.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:20:58,076 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P3_#t~nondet6.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:20:58,076 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:20:58,076 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:20:58,076 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P3_#t~nondet6.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:20:58,077 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P3_#t~nondet6.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:20:58,090 WARN L141 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-10-22 11:20:58,091 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:20:58,098 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-22 11:20:58,108 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-22 11:20:58,125 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:20:58,125 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 11:20:58,125 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:20:58,126 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:20:58,126 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:20:58,126 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:20:58,126 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:20:58,126 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:20:58,134 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 67 places, 63 transitions [2019-10-22 11:20:59,202 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 13135 states. [2019-10-22 11:20:59,203 INFO L276 IsEmpty]: Start isEmpty. Operand 13135 states. [2019-10-22 11:20:59,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-10-22 11:20:59,223 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:20:59,224 INFO L380 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] [2019-10-22 11:20:59,226 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:20:59,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:20:59,231 INFO L82 PathProgramCache]: Analyzing trace with hash 1523981989, now seen corresponding path program 1 times [2019-10-22 11:20:59,239 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:20:59,239 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497328086] [2019-10-22 11:20:59,239 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:20:59,240 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:20:59,240 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:20:59,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:20:59,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:20:59,577 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497328086] [2019-10-22 11:20:59,578 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:20:59,579 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 11:20:59,579 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983549339] [2019-10-22 11:20:59,583 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 11:20:59,584 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:20:59,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 11:20:59,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 11:20:59,599 INFO L87 Difference]: Start difference. First operand 13135 states. Second operand 4 states. [2019-10-22 11:20:59,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:20:59,885 INFO L93 Difference]: Finished difference Result 13741 states and 55792 transitions. [2019-10-22 11:20:59,885 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 11:20:59,886 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2019-10-22 11:20:59,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:20:59,937 INFO L225 Difference]: With dead ends: 13741 [2019-10-22 11:20:59,937 INFO L226 Difference]: Without dead ends: 5628 [2019-10-22 11:20:59,938 INFO L600 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 [2019-10-22 11:20:59,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5628 states. [2019-10-22 11:21:00,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5628 to 5628. [2019-10-22 11:21:00,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5628 states. [2019-10-22 11:21:00,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5628 states to 5628 states and 22351 transitions. [2019-10-22 11:21:00,217 INFO L78 Accepts]: Start accepts. Automaton has 5628 states and 22351 transitions. Word has length 34 [2019-10-22 11:21:00,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:21:00,219 INFO L462 AbstractCegarLoop]: Abstraction has 5628 states and 22351 transitions. [2019-10-22 11:21:00,219 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 11:21:00,219 INFO L276 IsEmpty]: Start isEmpty. Operand 5628 states and 22351 transitions. [2019-10-22 11:21:00,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-10-22 11:21:00,225 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:21:00,225 INFO L380 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] [2019-10-22 11:21:00,225 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:21:00,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:21:00,226 INFO L82 PathProgramCache]: Analyzing trace with hash 2033993381, now seen corresponding path program 1 times [2019-10-22 11:21:00,226 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:21:00,226 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285055227] [2019-10-22 11:21:00,226 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:00,226 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:00,226 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:21:00,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:21:00,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:21:00,368 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285055227] [2019-10-22 11:21:00,369 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:21:00,369 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 11:21:00,369 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190649105] [2019-10-22 11:21:00,370 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:21:00,370 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:21:00,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:21:00,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:21:00,371 INFO L87 Difference]: Start difference. First operand 5628 states and 22351 transitions. Second operand 5 states. [2019-10-22 11:21:00,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:21:00,520 INFO L93 Difference]: Finished difference Result 6140 states and 23831 transitions. [2019-10-22 11:21:00,520 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 11:21:00,520 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 35 [2019-10-22 11:21:00,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:21:00,550 INFO L225 Difference]: With dead ends: 6140 [2019-10-22 11:21:00,550 INFO L226 Difference]: Without dead ends: 5516 [2019-10-22 11:21:00,551 INFO L600 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 [2019-10-22 11:21:00,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5516 states. [2019-10-22 11:21:00,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5516 to 5516. [2019-10-22 11:21:00,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5516 states. [2019-10-22 11:21:00,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5516 states to 5516 states and 21819 transitions. [2019-10-22 11:21:00,726 INFO L78 Accepts]: Start accepts. Automaton has 5516 states and 21819 transitions. Word has length 35 [2019-10-22 11:21:00,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:21:00,726 INFO L462 AbstractCegarLoop]: Abstraction has 5516 states and 21819 transitions. [2019-10-22 11:21:00,726 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:21:00,726 INFO L276 IsEmpty]: Start isEmpty. Operand 5516 states and 21819 transitions. [2019-10-22 11:21:00,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-10-22 11:21:00,732 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:21:00,732 INFO L380 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, 1] [2019-10-22 11:21:00,733 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:21:00,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:21:00,733 INFO L82 PathProgramCache]: Analyzing trace with hash -2064722079, now seen corresponding path program 1 times [2019-10-22 11:21:00,733 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:21:00,733 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172189540] [2019-10-22 11:21:00,733 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:00,734 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:00,734 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:21:00,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:21:00,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:21:00,815 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172189540] [2019-10-22 11:21:00,815 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:21:00,815 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-22 11:21:00,815 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173517922] [2019-10-22 11:21:00,815 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 11:21:00,816 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:21:00,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 11:21:00,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-22 11:21:00,816 INFO L87 Difference]: Start difference. First operand 5516 states and 21819 transitions. Second operand 6 states. [2019-10-22 11:21:00,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:21:00,931 INFO L93 Difference]: Finished difference Result 5452 states and 20827 transitions. [2019-10-22 11:21:00,931 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-22 11:21:00,931 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 36 [2019-10-22 11:21:00,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:21:00,965 INFO L225 Difference]: With dead ends: 5452 [2019-10-22 11:21:00,971 INFO L226 Difference]: Without dead ends: 4844 [2019-10-22 11:21:00,971 INFO L600 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 [2019-10-22 11:21:00,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4844 states. [2019-10-22 11:21:01,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4844 to 4844. [2019-10-22 11:21:01,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4844 states. [2019-10-22 11:21:01,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4844 states to 4844 states and 18795 transitions. [2019-10-22 11:21:01,147 INFO L78 Accepts]: Start accepts. Automaton has 4844 states and 18795 transitions. Word has length 36 [2019-10-22 11:21:01,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:21:01,148 INFO L462 AbstractCegarLoop]: Abstraction has 4844 states and 18795 transitions. [2019-10-22 11:21:01,148 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 11:21:01,148 INFO L276 IsEmpty]: Start isEmpty. Operand 4844 states and 18795 transitions. [2019-10-22 11:21:01,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-10-22 11:21:01,157 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:21:01,157 INFO L380 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, 1, 1] [2019-10-22 11:21:01,157 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:21:01,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:21:01,157 INFO L82 PathProgramCache]: Analyzing trace with hash -971785873, now seen corresponding path program 1 times [2019-10-22 11:21:01,158 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:21:01,158 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119035677] [2019-10-22 11:21:01,158 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:01,158 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:01,159 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:21:01,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:21:01,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:21:01,380 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119035677] [2019-10-22 11:21:01,380 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:21:01,381 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-22 11:21:01,381 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298026865] [2019-10-22 11:21:01,381 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-22 11:21:01,381 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:21:01,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-22 11:21:01,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-22 11:21:01,382 INFO L87 Difference]: Start difference. First operand 4844 states and 18795 transitions. Second operand 7 states. [2019-10-22 11:21:01,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:21:01,526 INFO L93 Difference]: Finished difference Result 3564 states and 13035 transitions. [2019-10-22 11:21:01,527 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-22 11:21:01,527 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 37 [2019-10-22 11:21:01,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:21:01,538 INFO L225 Difference]: With dead ends: 3564 [2019-10-22 11:21:01,538 INFO L226 Difference]: Without dead ends: 3052 [2019-10-22 11:21:01,539 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2019-10-22 11:21:01,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3052 states. [2019-10-22 11:21:01,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3052 to 3052. [2019-10-22 11:21:01,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3052 states. [2019-10-22 11:21:01,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3052 states to 3052 states and 11179 transitions. [2019-10-22 11:21:01,632 INFO L78 Accepts]: Start accepts. Automaton has 3052 states and 11179 transitions. Word has length 37 [2019-10-22 11:21:01,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:21:01,633 INFO L462 AbstractCegarLoop]: Abstraction has 3052 states and 11179 transitions. [2019-10-22 11:21:01,634 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-22 11:21:01,634 INFO L276 IsEmpty]: Start isEmpty. Operand 3052 states and 11179 transitions. [2019-10-22 11:21:01,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-10-22 11:21:01,638 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:21:01,639 INFO L380 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, 1, 1, 1] [2019-10-22 11:21:01,639 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:21:01,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:21:01,639 INFO L82 PathProgramCache]: Analyzing trace with hash 168191397, now seen corresponding path program 1 times [2019-10-22 11:21:01,639 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:21:01,639 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481684401] [2019-10-22 11:21:01,640 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:01,640 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:01,640 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:21:01,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:21:01,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:21:01,773 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481684401] [2019-10-22 11:21:01,773 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:21:01,773 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-22 11:21:01,773 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506701339] [2019-10-22 11:21:01,773 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-22 11:21:01,774 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:21:01,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-22 11:21:01,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-22 11:21:01,774 INFO L87 Difference]: Start difference. First operand 3052 states and 11179 transitions. Second operand 8 states. [2019-10-22 11:21:02,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:21:02,006 INFO L93 Difference]: Finished difference Result 6732 states and 24955 transitions. [2019-10-22 11:21:02,009 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-22 11:21:02,009 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 38 [2019-10-22 11:21:02,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:21:02,020 INFO L225 Difference]: With dead ends: 6732 [2019-10-22 11:21:02,020 INFO L226 Difference]: Without dead ends: 2776 [2019-10-22 11:21:02,021 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2019-10-22 11:21:02,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2776 states. [2019-10-22 11:21:02,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2776 to 2776. [2019-10-22 11:21:02,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2776 states. [2019-10-22 11:21:02,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2776 states to 2776 states and 10259 transitions. [2019-10-22 11:21:02,090 INFO L78 Accepts]: Start accepts. Automaton has 2776 states and 10259 transitions. Word has length 38 [2019-10-22 11:21:02,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:21:02,090 INFO L462 AbstractCegarLoop]: Abstraction has 2776 states and 10259 transitions. [2019-10-22 11:21:02,090 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-22 11:21:02,090 INFO L276 IsEmpty]: Start isEmpty. Operand 2776 states and 10259 transitions. [2019-10-22 11:21:02,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-10-22 11:21:02,094 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:21:02,095 INFO L380 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, 1, 1, 1] [2019-10-22 11:21:02,095 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:21:02,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:21:02,095 INFO L82 PathProgramCache]: Analyzing trace with hash 1447932215, now seen corresponding path program 2 times [2019-10-22 11:21:02,095 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:21:02,096 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34919424] [2019-10-22 11:21:02,096 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:02,096 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:02,096 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:21:02,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:21:02,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:21:02,224 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34919424] [2019-10-22 11:21:02,225 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:21:02,225 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-22 11:21:02,225 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446919277] [2019-10-22 11:21:02,225 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-22 11:21:02,225 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:21:02,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-22 11:21:02,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-22 11:21:02,226 INFO L87 Difference]: Start difference. First operand 2776 states and 10259 transitions. Second operand 7 states. [2019-10-22 11:21:02,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:21:02,380 INFO L93 Difference]: Finished difference Result 4712 states and 17451 transitions. [2019-10-22 11:21:02,381 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-22 11:21:02,381 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2019-10-22 11:21:02,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:21:02,399 INFO L225 Difference]: With dead ends: 4712 [2019-10-22 11:21:02,401 INFO L226 Difference]: Without dead ends: 3032 [2019-10-22 11:21:02,402 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2019-10-22 11:21:02,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3032 states. [2019-10-22 11:21:02,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3032 to 2696. [2019-10-22 11:21:02,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2696 states. [2019-10-22 11:21:02,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2696 states to 2696 states and 9971 transitions. [2019-10-22 11:21:02,478 INFO L78 Accepts]: Start accepts. Automaton has 2696 states and 9971 transitions. Word has length 38 [2019-10-22 11:21:02,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:21:02,478 INFO L462 AbstractCegarLoop]: Abstraction has 2696 states and 9971 transitions. [2019-10-22 11:21:02,478 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-22 11:21:02,478 INFO L276 IsEmpty]: Start isEmpty. Operand 2696 states and 9971 transitions. [2019-10-22 11:21:02,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-10-22 11:21:02,482 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:21:02,482 INFO L380 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, 1, 1, 1] [2019-10-22 11:21:02,482 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:21:02,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:21:02,482 INFO L82 PathProgramCache]: Analyzing trace with hash -1047359705, now seen corresponding path program 3 times [2019-10-22 11:21:02,483 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:21:02,483 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75734696] [2019-10-22 11:21:02,483 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:02,483 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:02,483 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:21:02,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:21:02,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:21:02,579 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75734696] [2019-10-22 11:21:02,579 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:21:02,579 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-22 11:21:02,579 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110067068] [2019-10-22 11:21:02,580 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-22 11:21:02,580 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:21:02,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-22 11:21:02,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-22 11:21:02,580 INFO L87 Difference]: Start difference. First operand 2696 states and 9971 transitions. Second operand 8 states. [2019-10-22 11:21:02,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:21:02,757 INFO L93 Difference]: Finished difference Result 5912 states and 22203 transitions. [2019-10-22 11:21:02,757 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-22 11:21:02,758 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 38 [2019-10-22 11:21:02,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:21:02,766 INFO L225 Difference]: With dead ends: 5912 [2019-10-22 11:21:02,766 INFO L226 Difference]: Without dead ends: 2176 [2019-10-22 11:21:02,766 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2019-10-22 11:21:02,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2176 states. [2019-10-22 11:21:02,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2176 to 2176. [2019-10-22 11:21:02,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2176 states. [2019-10-22 11:21:02,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2176 states to 2176 states and 8251 transitions. [2019-10-22 11:21:02,827 INFO L78 Accepts]: Start accepts. Automaton has 2176 states and 8251 transitions. Word has length 38 [2019-10-22 11:21:02,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:21:02,827 INFO L462 AbstractCegarLoop]: Abstraction has 2176 states and 8251 transitions. [2019-10-22 11:21:02,827 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-22 11:21:02,827 INFO L276 IsEmpty]: Start isEmpty. Operand 2176 states and 8251 transitions. [2019-10-22 11:21:02,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-10-22 11:21:02,830 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:21:02,830 INFO L380 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, 1, 1, 1] [2019-10-22 11:21:02,830 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:21:02,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:21:02,831 INFO L82 PathProgramCache]: Analyzing trace with hash 150374941, now seen corresponding path program 4 times [2019-10-22 11:21:02,831 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:21:02,831 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11244123] [2019-10-22 11:21:02,831 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:02,831 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:02,831 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:21:02,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:21:02,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:21:02,947 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11244123] [2019-10-22 11:21:02,947 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:21:02,947 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-22 11:21:02,947 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772853884] [2019-10-22 11:21:02,948 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-22 11:21:02,948 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:21:02,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-22 11:21:02,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-10-22 11:21:02,949 INFO L87 Difference]: Start difference. First operand 2176 states and 8251 transitions. Second operand 8 states. [2019-10-22 11:21:03,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:21:03,028 INFO L93 Difference]: Finished difference Result 1664 states and 6203 transitions. [2019-10-22 11:21:03,029 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-22 11:21:03,029 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 38 [2019-10-22 11:21:03,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:21:03,029 INFO L225 Difference]: With dead ends: 1664 [2019-10-22 11:21:03,029 INFO L226 Difference]: Without dead ends: 0 [2019-10-22 11:21:03,030 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2019-10-22 11:21:03,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-22 11:21:03,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-22 11:21:03,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-22 11:21:03,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-22 11:21:03,030 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 38 [2019-10-22 11:21:03,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:21:03,031 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 11:21:03,031 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-22 11:21:03,031 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-22 11:21:03,031 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-22 11:21:03,034 INFO L303 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2019-10-22 11:21:03,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 11:21:03 BasicIcfg [2019-10-22 11:21:03,036 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 11:21:03,037 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 11:21:03,037 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 11:21:03,037 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 11:21:03,037 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:20:58" (3/4) ... [2019-10-22 11:21:03,041 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-10-22 11:21:03,051 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2019-10-22 11:21:03,052 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2019-10-22 11:21:03,052 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2019-10-22 11:21:03,052 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2019-10-22 11:21:03,059 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2019-10-22 11:21:03,059 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-10-22 11:21:03,108 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_aa4f5222-d314-4372-bb43-b49a39f99d36/bin/utaipan/witness.graphml [2019-10-22 11:21:03,110 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 11:21:03,112 INFO L168 Benchmark]: Toolchain (without parser) took 6135.57 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 396.9 MB). Free memory was 935.6 MB in the beginning and 897.4 MB in the end (delta: 38.3 MB). Peak memory consumption was 435.2 MB. Max. memory is 11.5 GB. [2019-10-22 11:21:03,113 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 963.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:21:03,113 INFO L168 Benchmark]: CACSL2BoogieTranslator took 629.95 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 197.7 MB). Free memory was 935.6 MB in the beginning and 1.2 GB in the end (delta: -232.5 MB). Peak memory consumption was 18.6 MB. Max. memory is 11.5 GB. [2019-10-22 11:21:03,114 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.35 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:21:03,116 INFO L168 Benchmark]: Boogie Preprocessor took 31.91 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. [2019-10-22 11:21:03,119 INFO L168 Benchmark]: RCFGBuilder took 354.86 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 27.1 MB). Peak memory consumption was 27.1 MB. Max. memory is 11.5 GB. [2019-10-22 11:21:03,119 INFO L168 Benchmark]: TraceAbstraction took 5003.91 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 199.2 MB). Free memory was 1.1 GB in the beginning and 900.6 MB in the end (delta: 233.8 MB). Peak memory consumption was 433.0 MB. Max. memory is 11.5 GB. [2019-10-22 11:21:03,119 INFO L168 Benchmark]: Witness Printer took 73.63 ms. Allocated memory is still 1.4 GB. Free memory was 900.6 MB in the beginning and 897.4 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. [2019-10-22 11:21:03,121 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 963.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 629.95 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 197.7 MB). Free memory was 935.6 MB in the beginning and 1.2 GB in the end (delta: -232.5 MB). Peak memory consumption was 18.6 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 37.35 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 31.91 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. * RCFGBuilder took 354.86 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 27.1 MB). Peak memory consumption was 27.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 5003.91 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 199.2 MB). Free memory was 1.1 GB in the beginning and 900.6 MB in the end (delta: 233.8 MB). Peak memory consumption was 433.0 MB. Max. memory is 11.5 GB. * Witness Printer took 73.63 ms. Allocated memory is still 1.4 GB. Free memory was 900.6 MB in the beginning and 897.4 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 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 9 procedures, 87 locations, 1 error locations. Result: SAFE, OverallTime: 4.9s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 606 SDtfs, 1143 SDslu, 1680 SDs, 0 SdLazy, 199 SolverSat, 104 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 87 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13135occurred 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: 0.9s AutomataMinimizationTime, 8 MinimizatonAttempts, 336 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 294 NumberOfCodeBlocks, 294 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 286 ConstructedInterpolants, 0 QuantifiedInterpolants, 32932 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, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...