./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/thin002_tso.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_7bdae43f-1205-4f00-84f1-b9ee2351e70b/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_7bdae43f-1205-4f00-84f1-b9ee2351e70b/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_7bdae43f-1205-4f00-84f1-b9ee2351e70b/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_7bdae43f-1205-4f00-84f1-b9ee2351e70b/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/thin002_tso.oepc.i -s /tmp/vcloud-vcloud-master/worker/run_dir_7bdae43f-1205-4f00-84f1-b9ee2351e70b/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_7bdae43f-1205-4f00-84f1-b9ee2351e70b/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 713cebf5ac496914464c3b07e269efb1002ec95d .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 21:42:49,707 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 21:42:49,708 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 21:42:49,716 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 21:42:49,716 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 21:42:49,716 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 21:42:49,717 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 21:42:49,719 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 21:42:49,721 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 21:42:49,722 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 21:42:49,722 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 21:42:49,724 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 21:42:49,724 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 21:42:49,725 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 21:42:49,725 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 21:42:49,727 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 21:42:49,727 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 21:42:49,728 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 21:42:49,730 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 21:42:49,732 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 21:42:49,733 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 21:42:49,734 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 21:42:49,735 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 21:42:49,735 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 21:42:49,737 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 21:42:49,737 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 21:42:49,737 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 21:42:49,738 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 21:42:49,738 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 21:42:49,738 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 21:42:49,739 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 21:42:49,739 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 21:42:49,739 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 21:42:49,740 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 21:42:49,740 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 21:42:49,741 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 21:42:49,741 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 21:42:49,741 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 21:42:49,741 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 21:42:49,742 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 21:42:49,742 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 21:42:49,743 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_7bdae43f-1205-4f00-84f1-b9ee2351e70b/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-12-07 21:42:49,753 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 21:42:49,753 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 21:42:49,753 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 21:42:49,753 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 21:42:49,754 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 21:42:49,754 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 21:42:49,754 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-12-07 21:42:49,754 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 21:42:49,754 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 21:42:49,754 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-12-07 21:42:49,754 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-12-07 21:42:49,755 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 21:42:49,755 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-12-07 21:42:49,755 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-12-07 21:42:49,755 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-12-07 21:42:49,756 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 21:42:49,756 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 21:42:49,756 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 21:42:49,756 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 21:42:49,756 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 21:42:49,756 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 21:42:49,756 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 21:42:49,756 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 21:42:49,757 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 21:42:49,757 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 21:42:49,757 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 21:42:49,757 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 21:42:49,757 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 21:42:49,757 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 21:42:49,757 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 21:42:49,757 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 21:42:49,758 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 21:42:49,758 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 21:42:49,758 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 21:42:49,758 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 21:42:49,758 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-12-07 21:42:49,758 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 21:42:49,758 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 21:42:49,758 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 21:42:49,758 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 21:42:49,759 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/run_dir_7bdae43f-1205-4f00-84f1-b9ee2351e70b/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 -> 713cebf5ac496914464c3b07e269efb1002ec95d [2019-12-07 21:42:49,858 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 21:42:49,868 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 21:42:49,871 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 21:42:49,872 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 21:42:49,872 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 21:42:49,873 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_7bdae43f-1205-4f00-84f1-b9ee2351e70b/bin/utaipan/../../sv-benchmarks/c/pthread-wmm/thin002_tso.oepc.i [2019-12-07 21:42:49,911 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7bdae43f-1205-4f00-84f1-b9ee2351e70b/bin/utaipan/data/7435bdb9f/34b7ab9150004d9ba96293616cf4ab72/FLAG818bbc413 [2019-12-07 21:42:50,371 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 21:42:50,372 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_7bdae43f-1205-4f00-84f1-b9ee2351e70b/sv-benchmarks/c/pthread-wmm/thin002_tso.oepc.i [2019-12-07 21:42:50,382 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7bdae43f-1205-4f00-84f1-b9ee2351e70b/bin/utaipan/data/7435bdb9f/34b7ab9150004d9ba96293616cf4ab72/FLAG818bbc413 [2019-12-07 21:42:50,896 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_7bdae43f-1205-4f00-84f1-b9ee2351e70b/bin/utaipan/data/7435bdb9f/34b7ab9150004d9ba96293616cf4ab72 [2019-12-07 21:42:50,898 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 21:42:50,899 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 21:42:50,900 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 21:42:50,900 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 21:42:50,903 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 21:42:50,903 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 09:42:50" (1/1) ... [2019-12-07 21:42:50,905 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47a25c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:42:50, skipping insertion in model container [2019-12-07 21:42:50,905 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 09:42:50" (1/1) ... [2019-12-07 21:42:50,910 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 21:42:50,937 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 21:42:51,154 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 21:42:51,161 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 21:42:51,194 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 21:42:51,238 INFO L208 MainTranslator]: Completed translation [2019-12-07 21:42:51,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:42:51 WrapperNode [2019-12-07 21:42:51,239 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 21:42:51,239 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 21:42:51,239 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 21:42:51,239 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 21:42:51,245 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:42:51" (1/1) ... [2019-12-07 21:42:51,255 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:42:51" (1/1) ... [2019-12-07 21:42:51,270 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 21:42:51,270 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 21:42:51,270 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 21:42:51,270 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 21:42:51,277 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:42:51" (1/1) ... [2019-12-07 21:42:51,277 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:42:51" (1/1) ... [2019-12-07 21:42:51,279 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:42:51" (1/1) ... [2019-12-07 21:42:51,279 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:42:51" (1/1) ... [2019-12-07 21:42:51,284 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:42:51" (1/1) ... [2019-12-07 21:42:51,285 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:42:51" (1/1) ... [2019-12-07 21:42:51,287 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:42:51" (1/1) ... [2019-12-07 21:42:51,289 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 21:42:51,289 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 21:42:51,289 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 21:42:51,290 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 21:42:51,290 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:42:51" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7bdae43f-1205-4f00-84f1-b9ee2351e70b/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 [2019-12-07 21:42:51,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-07 21:42:51,331 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-12-07 21:42:51,331 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 21:42:51,331 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 21:42:51,331 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2019-12-07 21:42:51,331 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2019-12-07 21:42:51,331 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2019-12-07 21:42:51,331 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2019-12-07 21:42:51,331 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2019-12-07 21:42:51,332 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2019-12-07 21:42:51,332 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2019-12-07 21:42:51,332 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2019-12-07 21:42:51,332 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-12-07 21:42:51,332 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 21:42:51,332 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 21:42:51,333 WARN L205 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-12-07 21:42:51,518 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 21:42:51,518 INFO L287 CfgBuilder]: Removed 6 assume(true) statements. [2019-12-07 21:42:51,519 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 09:42:51 BoogieIcfgContainer [2019-12-07 21:42:51,519 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 21:42:51,520 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 21:42:51,520 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 21:42:51,522 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 21:42:51,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 09:42:50" (1/3) ... [2019-12-07 21:42:51,522 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20f0459d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 09:42:51, skipping insertion in model container [2019-12-07 21:42:51,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:42:51" (2/3) ... [2019-12-07 21:42:51,523 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20f0459d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 09:42:51, skipping insertion in model container [2019-12-07 21:42:51,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 09:42:51" (3/3) ... [2019-12-07 21:42:51,524 INFO L109 eAbstractionObserver]: Analyzing ICFG thin002_tso.oepc.i [2019-12-07 21:42:51,530 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-12-07 21:42:51,530 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 21:42:51,535 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 21:42:51,536 INFO L339 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-12-07 21:42:51,555 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 21:42:51,555 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 21:42:51,555 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 21:42:51,555 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 21:42:51,556 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 21:42:51,556 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 21:42:51,556 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 21:42:51,556 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 21:42:51,556 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 21:42:51,556 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 21:42:51,556 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 21:42:51,557 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 21:42:51,557 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 21:42:51,557 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 21:42:51,557 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 21:42:51,557 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 21:42:51,557 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 21:42:51,557 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 21:42:51,558 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 21:42:51,558 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 21:42:51,558 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 21:42:51,558 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 21:42:51,558 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 21:42:51,558 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 21:42:51,573 INFO L249 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2019-12-07 21:42:51,585 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 21:42:51,586 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 21:42:51,586 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 21:42:51,586 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 21:42:51,586 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 21:42:51,586 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 21:42:51,586 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 21:42:51,586 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 21:42:51,595 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 67 transitions [2019-12-07 21:42:51,596 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 79 places, 67 transitions [2019-12-07 21:42:51,624 INFO L134 PetriNetUnfolder]: 1/63 cut-off events. [2019-12-07 21:42:51,624 INFO L135 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-07 21:42:51,628 INFO L76 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 63 events. 1/63 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 29 event pairs. 12/73 useless extension candidates. Maximal degree in co-relation 50. Up to 2 conditions per place. [2019-12-07 21:42:51,630 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 79 places, 67 transitions [2019-12-07 21:42:51,642 INFO L134 PetriNetUnfolder]: 1/63 cut-off events. [2019-12-07 21:42:51,642 INFO L135 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-07 21:42:51,643 INFO L76 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 63 events. 1/63 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 29 event pairs. 12/73 useless extension candidates. Maximal degree in co-relation 50. Up to 2 conditions per place. [2019-12-07 21:42:51,644 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 732 [2019-12-07 21:42:51,645 INFO L170 etLargeBlockEncoding]: Semantic Check. [2019-12-07 21:42:52,534 INFO L206 etLargeBlockEncoding]: Checked pairs total: 723 [2019-12-07 21:42:52,534 INFO L214 etLargeBlockEncoding]: Total number of compositions: 56 [2019-12-07 21:42:52,538 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 28 places, 21 transitions [2019-12-07 21:42:52,550 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 110 states. [2019-12-07 21:42:52,552 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states. [2019-12-07 21:42:52,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 21:42:52,557 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 21:42:52,557 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 21:42:52,562 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 21:42:52,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 21:42:52,568 INFO L82 PathProgramCache]: Analyzing trace with hash 1014881653, now seen corresponding path program 1 times [2019-12-07 21:42:52,574 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 21:42:52,575 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606063380] [2019-12-07 21:42:52,575 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 21:42:52,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 21:42:52,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 21:42:52,745 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606063380] [2019-12-07 21:42:52,746 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 21:42:52,746 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-07 21:42:52,746 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180454067] [2019-12-07 21:42:52,749 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 21:42:52,750 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 21:42:52,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 21:42:52,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 21:42:52,760 INFO L87 Difference]: Start difference. First operand 110 states. Second operand 3 states. [2019-12-07 21:42:52,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 21:42:52,783 INFO L93 Difference]: Finished difference Result 102 states and 260 transitions. [2019-12-07 21:42:52,784 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 21:42:52,785 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2019-12-07 21:42:52,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 21:42:52,795 INFO L225 Difference]: With dead ends: 102 [2019-12-07 21:42:52,795 INFO L226 Difference]: Without dead ends: 70 [2019-12-07 21:42:52,797 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 21:42:52,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2019-12-07 21:42:52,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2019-12-07 21:42:52,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2019-12-07 21:42:52,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 164 transitions. [2019-12-07 21:42:52,828 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 164 transitions. Word has length 10 [2019-12-07 21:42:52,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 21:42:52,829 INFO L462 AbstractCegarLoop]: Abstraction has 70 states and 164 transitions. [2019-12-07 21:42:52,829 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 21:42:52,829 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 164 transitions. [2019-12-07 21:42:52,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 21:42:52,830 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 21:42:52,830 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 21:42:52,830 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 21:42:52,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 21:42:52,830 INFO L82 PathProgramCache]: Analyzing trace with hash 1396559942, now seen corresponding path program 1 times [2019-12-07 21:42:52,830 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 21:42:52,830 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067751944] [2019-12-07 21:42:52,831 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 21:42:52,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 21:42:52,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 21:42:52,879 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067751944] [2019-12-07 21:42:52,879 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 21:42:52,879 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-07 21:42:52,879 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412673407] [2019-12-07 21:42:52,880 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 21:42:52,880 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 21:42:52,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 21:42:52,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 21:42:52,880 INFO L87 Difference]: Start difference. First operand 70 states and 164 transitions. Second operand 3 states. [2019-12-07 21:42:52,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 21:42:52,885 INFO L93 Difference]: Finished difference Result 66 states and 152 transitions. [2019-12-07 21:42:52,886 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 21:42:52,886 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2019-12-07 21:42:52,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 21:42:52,887 INFO L225 Difference]: With dead ends: 66 [2019-12-07 21:42:52,887 INFO L226 Difference]: Without dead ends: 66 [2019-12-07 21:42:52,887 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 21:42:52,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2019-12-07 21:42:52,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2019-12-07 21:42:52,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2019-12-07 21:42:52,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 152 transitions. [2019-12-07 21:42:52,893 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 152 transitions. Word has length 11 [2019-12-07 21:42:52,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 21:42:52,894 INFO L462 AbstractCegarLoop]: Abstraction has 66 states and 152 transitions. [2019-12-07 21:42:52,894 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 21:42:52,894 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 152 transitions. [2019-12-07 21:42:52,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-12-07 21:42:52,894 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 21:42:52,894 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 21:42:52,895 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 21:42:52,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 21:42:52,895 INFO L82 PathProgramCache]: Analyzing trace with hash 343681169, now seen corresponding path program 1 times [2019-12-07 21:42:52,895 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 21:42:52,895 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885125686] [2019-12-07 21:42:52,895 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 21:42:52,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 21:42:52,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 21:42:52,952 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885125686] [2019-12-07 21:42:52,952 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 21:42:52,952 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 21:42:52,952 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173457878] [2019-12-07 21:42:52,952 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 21:42:52,952 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 21:42:52,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 21:42:52,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-07 21:42:52,953 INFO L87 Difference]: Start difference. First operand 66 states and 152 transitions. Second operand 5 states. [2019-12-07 21:42:52,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 21:42:52,973 INFO L93 Difference]: Finished difference Result 72 states and 159 transitions. [2019-12-07 21:42:52,973 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 21:42:52,973 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2019-12-07 21:42:52,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 21:42:52,974 INFO L225 Difference]: With dead ends: 72 [2019-12-07 21:42:52,974 INFO L226 Difference]: Without dead ends: 56 [2019-12-07 21:42:52,974 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-12-07 21:42:52,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2019-12-07 21:42:52,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2019-12-07 21:42:52,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2019-12-07 21:42:52,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 119 transitions. [2019-12-07 21:42:52,978 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 119 transitions. Word has length 12 [2019-12-07 21:42:52,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 21:42:52,978 INFO L462 AbstractCegarLoop]: Abstraction has 56 states and 119 transitions. [2019-12-07 21:42:52,979 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 21:42:52,979 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 119 transitions. [2019-12-07 21:42:52,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-12-07 21:42:52,979 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 21:42:52,979 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 21:42:52,979 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 21:42:52,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 21:42:52,980 INFO L82 PathProgramCache]: Analyzing trace with hash 1159720466, now seen corresponding path program 1 times [2019-12-07 21:42:52,980 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 21:42:52,980 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746621633] [2019-12-07 21:42:52,980 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 21:42:52,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 21:42:53,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 21:42:53,025 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746621633] [2019-12-07 21:42:53,025 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 21:42:53,025 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 21:42:53,025 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052399766] [2019-12-07 21:42:53,025 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 21:42:53,025 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 21:42:53,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 21:42:53,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 21:42:53,026 INFO L87 Difference]: Start difference. First operand 56 states and 119 transitions. Second operand 4 states. [2019-12-07 21:42:53,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 21:42:53,051 INFO L93 Difference]: Finished difference Result 62 states and 131 transitions. [2019-12-07 21:42:53,051 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 21:42:53,051 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2019-12-07 21:42:53,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 21:42:53,052 INFO L225 Difference]: With dead ends: 62 [2019-12-07 21:42:53,052 INFO L226 Difference]: Without dead ends: 62 [2019-12-07 21:42:53,052 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-07 21:42:53,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2019-12-07 21:42:53,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 58. [2019-12-07 21:42:53,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2019-12-07 21:42:53,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 122 transitions. [2019-12-07 21:42:53,057 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 122 transitions. Word has length 13 [2019-12-07 21:42:53,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 21:42:53,057 INFO L462 AbstractCegarLoop]: Abstraction has 58 states and 122 transitions. [2019-12-07 21:42:53,057 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 21:42:53,057 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 122 transitions. [2019-12-07 21:42:53,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-12-07 21:42:53,058 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 21:42:53,058 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 21:42:53,058 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 21:42:53,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 21:42:53,058 INFO L82 PathProgramCache]: Analyzing trace with hash 1159724186, now seen corresponding path program 2 times [2019-12-07 21:42:53,059 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 21:42:53,059 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599504941] [2019-12-07 21:42:53,059 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 21:42:53,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 21:42:53,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 21:42:53,142 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599504941] [2019-12-07 21:42:53,142 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 21:42:53,142 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 21:42:53,143 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256762153] [2019-12-07 21:42:53,143 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 21:42:53,143 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 21:42:53,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 21:42:53,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-12-07 21:42:53,143 INFO L87 Difference]: Start difference. First operand 58 states and 122 transitions. Second operand 6 states. [2019-12-07 21:42:53,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 21:42:53,187 INFO L93 Difference]: Finished difference Result 63 states and 126 transitions. [2019-12-07 21:42:53,187 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 21:42:53,187 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2019-12-07 21:42:53,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 21:42:53,188 INFO L225 Difference]: With dead ends: 63 [2019-12-07 21:42:53,188 INFO L226 Difference]: Without dead ends: 50 [2019-12-07 21:42:53,188 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2019-12-07 21:42:53,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2019-12-07 21:42:53,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2019-12-07 21:42:53,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2019-12-07 21:42:53,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 97 transitions. [2019-12-07 21:42:53,191 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 97 transitions. Word has length 13 [2019-12-07 21:42:53,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 21:42:53,192 INFO L462 AbstractCegarLoop]: Abstraction has 50 states and 97 transitions. [2019-12-07 21:42:53,192 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 21:42:53,192 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 97 transitions. [2019-12-07 21:42:53,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-12-07 21:42:53,192 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 21:42:53,193 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 21:42:53,193 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 21:42:53,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 21:42:53,193 INFO L82 PathProgramCache]: Analyzing trace with hash 1163202386, now seen corresponding path program 3 times [2019-12-07 21:42:53,193 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 21:42:53,193 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812799915] [2019-12-07 21:42:53,194 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 21:42:53,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 21:42:53,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 21:42:53,245 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812799915] [2019-12-07 21:42:53,246 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 21:42:53,246 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 21:42:53,246 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510219813] [2019-12-07 21:42:53,246 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 21:42:53,246 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 21:42:53,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 21:42:53,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-07 21:42:53,247 INFO L87 Difference]: Start difference. First operand 50 states and 97 transitions. Second operand 5 states. [2019-12-07 21:42:53,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 21:42:53,264 INFO L93 Difference]: Finished difference Result 60 states and 108 transitions. [2019-12-07 21:42:53,264 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 21:42:53,264 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2019-12-07 21:42:53,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 21:42:53,264 INFO L225 Difference]: With dead ends: 60 [2019-12-07 21:42:53,264 INFO L226 Difference]: Without dead ends: 37 [2019-12-07 21:42:53,265 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-12-07 21:42:53,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-12-07 21:42:53,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2019-12-07 21:42:53,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-12-07 21:42:53,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 62 transitions. [2019-12-07 21:42:53,267 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 62 transitions. Word has length 13 [2019-12-07 21:42:53,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 21:42:53,267 INFO L462 AbstractCegarLoop]: Abstraction has 37 states and 62 transitions. [2019-12-07 21:42:53,267 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 21:42:53,267 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 62 transitions. [2019-12-07 21:42:53,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-12-07 21:42:53,268 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 21:42:53,268 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 21:42:53,268 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 21:42:53,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 21:42:53,268 INFO L82 PathProgramCache]: Analyzing trace with hash 1695930658, now seen corresponding path program 1 times [2019-12-07 21:42:53,268 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 21:42:53,268 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070650316] [2019-12-07 21:42:53,268 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 21:42:53,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 21:42:53,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 21:42:53,308 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070650316] [2019-12-07 21:42:53,308 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 21:42:53,308 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 21:42:53,309 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641470241] [2019-12-07 21:42:53,309 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 21:42:53,309 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 21:42:53,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 21:42:53,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-07 21:42:53,310 INFO L87 Difference]: Start difference. First operand 37 states and 62 transitions. Second operand 5 states. [2019-12-07 21:42:53,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 21:42:53,325 INFO L93 Difference]: Finished difference Result 43 states and 68 transitions. [2019-12-07 21:42:53,325 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 21:42:53,325 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2019-12-07 21:42:53,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 21:42:53,326 INFO L225 Difference]: With dead ends: 43 [2019-12-07 21:42:53,326 INFO L226 Difference]: Without dead ends: 28 [2019-12-07 21:42:53,326 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-12-07 21:42:53,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-12-07 21:42:53,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2019-12-07 21:42:53,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-12-07 21:42:53,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 40 transitions. [2019-12-07 21:42:53,328 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 40 transitions. Word has length 14 [2019-12-07 21:42:53,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 21:42:53,328 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 40 transitions. [2019-12-07 21:42:53,328 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 21:42:53,328 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 40 transitions. [2019-12-07 21:42:53,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-12-07 21:42:53,328 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 21:42:53,328 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 21:42:53,328 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 21:42:53,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 21:42:53,329 INFO L82 PathProgramCache]: Analyzing trace with hash -1405707042, now seen corresponding path program 2 times [2019-12-07 21:42:53,329 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 21:42:53,329 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240394823] [2019-12-07 21:42:53,329 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 21:42:53,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 21:42:53,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 21:42:53,375 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240394823] [2019-12-07 21:42:53,376 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 21:42:53,376 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 21:42:53,376 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382067678] [2019-12-07 21:42:53,376 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 21:42:53,376 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 21:42:53,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 21:42:53,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-07 21:42:53,377 INFO L87 Difference]: Start difference. First operand 28 states and 40 transitions. Second operand 5 states. [2019-12-07 21:42:53,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 21:42:53,385 INFO L93 Difference]: Finished difference Result 27 states and 39 transitions. [2019-12-07 21:42:53,385 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 21:42:53,385 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2019-12-07 21:42:53,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 21:42:53,385 INFO L225 Difference]: With dead ends: 27 [2019-12-07 21:42:53,385 INFO L226 Difference]: Without dead ends: 0 [2019-12-07 21:42:53,386 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-12-07 21:42:53,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-07 21:42:53,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-07 21:42:53,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-07 21:42:53,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 21:42:53,387 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2019-12-07 21:42:53,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 21:42:53,387 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 21:42:53,387 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 21:42:53,387 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-07 21:42:53,387 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-07 21:42:53,390 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 09:42:53 BasicIcfg [2019-12-07 21:42:53,391 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 21:42:53,391 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 21:42:53,391 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 21:42:53,391 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 21:42:53,392 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 09:42:51" (3/4) ... [2019-12-07 21:42:53,394 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-12-07 21:42:53,399 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2019-12-07 21:42:53,399 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2019-12-07 21:42:53,399 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2019-12-07 21:42:53,399 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2019-12-07 21:42:53,402 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2019-12-07 21:42:53,402 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-12-07 21:42:53,402 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-12-07 21:42:53,438 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_7bdae43f-1205-4f00-84f1-b9ee2351e70b/bin/utaipan/witness.graphml [2019-12-07 21:42:53,439 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 21:42:53,441 INFO L168 Benchmark]: Toolchain (without parser) took 2541.21 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 98.6 MB). Free memory was 934.4 MB in the beginning and 961.7 MB in the end (delta: -27.3 MB). Peak memory consumption was 71.3 MB. Max. memory is 11.5 GB. [2019-12-07 21:42:53,441 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 955.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 21:42:53,442 INFO L168 Benchmark]: CACSL2BoogieTranslator took 339.27 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 98.6 MB). Free memory was 934.4 MB in the beginning and 1.1 GB in the end (delta: -133.5 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. [2019-12-07 21:42:53,442 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.00 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 21:42:53,442 INFO L168 Benchmark]: Boogie Preprocessor took 18.75 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-12-07 21:42:53,443 INFO L168 Benchmark]: RCFGBuilder took 230.11 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 27.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 11.5 GB. [2019-12-07 21:42:53,443 INFO L168 Benchmark]: TraceAbstraction took 1870.79 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 968.7 MB in the end (delta: 66.6 MB). Peak memory consumption was 66.6 MB. Max. memory is 11.5 GB. [2019-12-07 21:42:53,444 INFO L168 Benchmark]: Witness Printer took 47.79 ms. Allocated memory is still 1.1 GB. Free memory was 968.7 MB in the beginning and 961.7 MB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. [2019-12-07 21:42:53,446 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 955.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 339.27 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 98.6 MB). Free memory was 934.4 MB in the beginning and 1.1 GB in the end (delta: -133.5 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 31.00 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 18.75 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 230.11 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 27.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1870.79 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 968.7 MB in the end (delta: 66.6 MB). Peak memory consumption was 66.6 MB. Max. memory is 11.5 GB. * Witness Printer took 47.79 ms. Allocated memory is still 1.1 GB. Free memory was 968.7 MB in the beginning and 961.7 MB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.9s, 79 ProgramPointsBefore, 28 ProgramPointsAfterwards, 67 TransitionsBefore, 21 TransitionsAfterwards, 732 CoEnabledTransitionPairs, 7 FixpointIterations, 17 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 3 ConcurrentYvCompositions, 0 ChoiceCompositions, 358 VarBasedMoverChecksPositive, 12 VarBasedMoverChecksNegative, 2 SemBasedMoverChecksPositive, 14 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 723 CheckedPairsTotal, 56 TotalNumberOfCompositions - 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 5 procedures, 67 locations, 1 error locations. Result: SAFE, OverallTime: 1.8s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 104 SDtfs, 138 SDslu, 91 SDs, 0 SdLazy, 64 SolverSat, 34 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=110occurred 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: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 100 NumberOfCodeBlocks, 100 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 92 ConstructedInterpolants, 0 QuantifiedInterpolants, 4490 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...