./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe015_pso.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_7f91a55f-93c8-4077-85a6-2a904c06c5db/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_7f91a55f-93c8-4077-85a6-2a904c06c5db/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_7f91a55f-93c8-4077-85a6-2a904c06c5db/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_7f91a55f-93c8-4077-85a6-2a904c06c5db/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe015_pso.oepc.i -s /tmp/vcloud-vcloud-master/worker/run_dir_7f91a55f-93c8-4077-85a6-2a904c06c5db/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_7f91a55f-93c8-4077-85a6-2a904c06c5db/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f51cec7aed139d59f5c2c44b39d61d5b9a077bfe ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 09:23:22,565 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 09:23:22,566 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 09:23:22,603 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 09:23:22,603 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 09:23:22,604 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 09:23:22,613 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 09:23:22,615 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 09:23:22,617 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 09:23:22,618 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 09:23:22,619 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 09:23:22,621 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 09:23:22,621 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 09:23:22,622 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 09:23:22,623 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 09:23:22,624 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 09:23:22,625 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 09:23:22,626 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 09:23:22,628 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 09:23:22,630 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 09:23:22,632 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 09:23:22,633 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 09:23:22,635 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 09:23:22,635 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 09:23:22,638 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 09:23:22,639 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 09:23:22,639 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 09:23:22,640 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 09:23:22,641 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 09:23:22,642 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 09:23:22,642 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 09:23:22,643 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 09:23:22,643 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 09:23:22,644 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 09:23:22,645 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 09:23:22,646 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 09:23:22,646 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 09:23:22,647 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 09:23:22,647 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 09:23:22,648 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 09:23:22,648 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 09:23:22,649 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_7f91a55f-93c8-4077-85a6-2a904c06c5db/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 09:23:22,671 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 09:23:22,671 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 09:23:22,672 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 09:23:22,672 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 09:23:22,672 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 09:23:22,672 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 09:23:22,672 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 09:23:22,673 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 09:23:22,673 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 09:23:22,673 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 09:23:22,673 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 09:23:22,673 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 09:23:22,673 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 09:23:22,674 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 09:23:22,674 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 09:23:22,674 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 09:23:22,675 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 09:23:22,675 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 09:23:22,675 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 09:23:22,675 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 09:23:22,675 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 09:23:22,675 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 09:23:22,676 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 09:23:22,676 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 09:23:22,676 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 09:23:22,676 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 09:23:22,676 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 09:23:22,676 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 09:23:22,677 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 09:23:22,677 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 09:23:22,677 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 09:23:22,677 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 09:23:22,677 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 09:23:22,677 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 09:23:22,678 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 09:23:22,678 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 09:23:22,678 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 09:23:22,678 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 09:23:22,678 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 09:23:22,678 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_7f91a55f-93c8-4077-85a6-2a904c06c5db/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_7f91a55f-93c8-4077-85a6-2a904c06c5db/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f51cec7aed139d59f5c2c44b39d61d5b9a077bfe [2020-12-09 09:23:22,880 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 09:23:22,896 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 09:23:22,899 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 09:23:22,900 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 09:23:22,900 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 09:23:22,901 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_7f91a55f-93c8-4077-85a6-2a904c06c5db/bin/utaipan/../../sv-benchmarks/c/pthread-wmm/safe015_pso.oepc.i [2020-12-09 09:23:22,943 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7f91a55f-93c8-4077-85a6-2a904c06c5db/bin/utaipan/data/d75275824/2894cf9d9ecd4cdaa60e3215736b9066/FLAG64c58fcc8 [2020-12-09 09:23:23,356 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 09:23:23,357 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_7f91a55f-93c8-4077-85a6-2a904c06c5db/sv-benchmarks/c/pthread-wmm/safe015_pso.oepc.i [2020-12-09 09:23:23,367 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7f91a55f-93c8-4077-85a6-2a904c06c5db/bin/utaipan/data/d75275824/2894cf9d9ecd4cdaa60e3215736b9066/FLAG64c58fcc8 [2020-12-09 09:23:23,378 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_7f91a55f-93c8-4077-85a6-2a904c06c5db/bin/utaipan/data/d75275824/2894cf9d9ecd4cdaa60e3215736b9066 [2020-12-09 09:23:23,380 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 09:23:23,381 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 09:23:23,383 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 09:23:23,383 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 09:23:23,386 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 09:23:23,386 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 09:23:23" (1/1) ... [2020-12-09 09:23:23,388 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b40a24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:23:23, skipping insertion in model container [2020-12-09 09:23:23,388 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 09:23:23" (1/1) ... [2020-12-09 09:23:23,394 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 09:23:23,426 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 09:23:23,546 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_7f91a55f-93c8-4077-85a6-2a904c06c5db/sv-benchmarks/c/pthread-wmm/safe015_pso.oepc.i[950,963] [2020-12-09 09:23:23,641 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 09:23:23,647 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 09:23:23,655 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_7f91a55f-93c8-4077-85a6-2a904c06c5db/sv-benchmarks/c/pthread-wmm/safe015_pso.oepc.i[950,963] [2020-12-09 09:23:23,678 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 09:23:23,728 INFO L208 MainTranslator]: Completed translation [2020-12-09 09:23:23,728 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:23:23 WrapperNode [2020-12-09 09:23:23,728 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 09:23:23,729 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 09:23:23,729 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 09:23:23,729 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 09:23:23,735 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:23:23" (1/1) ... [2020-12-09 09:23:23,744 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:23:23" (1/1) ... [2020-12-09 09:23:23,758 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 09:23:23,758 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 09:23:23,758 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 09:23:23,759 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 09:23:23,764 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:23:23" (1/1) ... [2020-12-09 09:23:23,764 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:23:23" (1/1) ... [2020-12-09 09:23:23,767 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:23:23" (1/1) ... [2020-12-09 09:23:23,767 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:23:23" (1/1) ... [2020-12-09 09:23:23,771 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:23:23" (1/1) ... [2020-12-09 09:23:23,772 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:23:23" (1/1) ... [2020-12-09 09:23:23,774 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:23:23" (1/1) ... [2020-12-09 09:23:23,776 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 09:23:23,777 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 09:23:23,777 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 09:23:23,777 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 09:23:23,778 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:23:23" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7f91a55f-93c8-4077-85a6-2a904c06c5db/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 [2020-12-09 09:23:23,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-09 09:23:23,843 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-09 09:23:23,843 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 09:23:23,843 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-09 09:23:23,843 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-09 09:23:23,843 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-09 09:23:23,843 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-09 09:23:23,843 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-09 09:23:23,844 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-12-09 09:23:23,844 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-12-09 09:23:23,844 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 09:23:23,844 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-09 09:23:23,844 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 09:23:23,844 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 09:23:23,846 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-12-09 09:23:24,070 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 09:23:24,071 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-09 09:23:24,072 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 09:23:24 BoogieIcfgContainer [2020-12-09 09:23:24,072 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 09:23:24,073 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 09:23:24,073 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 09:23:24,076 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 09:23:24,076 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 09:23:23" (1/3) ... [2020-12-09 09:23:24,077 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7466e10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 09:23:24, skipping insertion in model container [2020-12-09 09:23:24,077 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:23:23" (2/3) ... [2020-12-09 09:23:24,077 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7466e10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 09:23:24, skipping insertion in model container [2020-12-09 09:23:24,077 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 09:23:24" (3/3) ... [2020-12-09 09:23:24,078 INFO L111 eAbstractionObserver]: Analyzing ICFG safe015_pso.oepc.i [2020-12-09 09:23:24,088 WARN L169 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-09 09:23:24,088 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 09:23:24,090 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 09:23:24,090 INFO L354 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-09 09:23:24,112 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 09:23:24,112 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 09:23:24,112 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 09:23:24,113 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 09:23:24,113 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 09:23:24,113 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 09:23:24,113 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 09:23:24,113 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 09:23:24,114 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 09:23:24,114 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 09:23:24,114 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 09:23:24,114 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 09:23:24,115 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 09:23:24,115 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 09:23:24,115 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 09:23:24,115 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 09:23:24,115 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 09:23:24,115 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 09:23:24,115 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 09:23:24,116 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 09:23:24,116 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 09:23:24,116 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 09:23:24,116 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 09:23:24,117 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 09:23:24,117 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 09:23:24,117 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 09:23:24,117 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 09:23:24,117 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 09:23:24,118 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 09:23:24,118 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 09:23:24,118 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 09:23:24,118 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 09:23:24,118 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 09:23:24,119 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 09:23:24,119 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 09:23:24,119 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 09:23:24,121 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 09:23:24,121 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 09:23:24,121 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 09:23:24,121 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 09:23:24,125 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 09:23:24,125 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 09:23:24,125 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 09:23:24,125 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 09:23:24,127 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 09:23:24,127 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 09:23:24,127 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 09:23:24,127 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 09:23:24,128 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-09 09:23:24,136 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-09 09:23:24,150 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 09:23:24,150 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 09:23:24,150 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 09:23:24,150 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 09:23:24,150 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 09:23:24,150 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 09:23:24,150 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 09:23:24,150 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 09:23:24,158 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-09 09:23:24,160 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 82 places, 74 transitions, 163 flow [2020-12-09 09:23:24,162 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 82 places, 74 transitions, 163 flow [2020-12-09 09:23:24,163 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 82 places, 74 transitions, 163 flow [2020-12-09 09:23:24,197 INFO L129 PetriNetUnfolder]: 2/71 cut-off events. [2020-12-09 09:23:24,198 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-09 09:23:24,201 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 71 events. 2/71 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2020-12-09 09:23:24,202 INFO L116 LiptonReduction]: Number of co-enabled transitions 1296 [2020-12-09 09:23:25,887 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-12-09 09:23:26,075 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-12-09 09:23:26,255 INFO L131 LiptonReduction]: Checked pairs total: 2553 [2020-12-09 09:23:26,255 INFO L133 LiptonReduction]: Total number of compositions: 64 [2020-12-09 09:23:26,259 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-12-09 09:23:26,278 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-12-09 09:23:26,280 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-12-09 09:23:26,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 09:23:26,284 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:23:26,285 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 09:23:26,285 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 09:23:26,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:23:26,289 INFO L82 PathProgramCache]: Analyzing trace with hash 1555009458, now seen corresponding path program 1 times [2020-12-09 09:23:26,296 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 09:23:26,297 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351391130] [2020-12-09 09:23:26,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 09:23:26,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:23:26,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:23:26,480 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351391130] [2020-12-09 09:23:26,481 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 09:23:26,481 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-09 09:23:26,482 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276759744] [2020-12-09 09:23:26,485 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 09:23:26,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 09:23:26,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 09:23:26,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 09:23:26,499 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-12-09 09:23:26,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:23:26,546 INFO L93 Difference]: Finished difference Result 457 states and 1253 transitions. [2020-12-09 09:23:26,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 09:23:26,547 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-12-09 09:23:26,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:23:26,561 INFO L225 Difference]: With dead ends: 457 [2020-12-09 09:23:26,562 INFO L226 Difference]: Without dead ends: 315 [2020-12-09 09:23:26,563 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 09:23:26,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2020-12-09 09:23:26,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 280. [2020-12-09 09:23:26,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 280 states. [2020-12-09 09:23:26,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 739 transitions. [2020-12-09 09:23:26,620 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 739 transitions. Word has length 8 [2020-12-09 09:23:26,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:23:26,621 INFO L481 AbstractCegarLoop]: Abstraction has 280 states and 739 transitions. [2020-12-09 09:23:26,621 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 09:23:26,622 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 739 transitions. [2020-12-09 09:23:26,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-09 09:23:26,623 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:23:26,623 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 09:23:26,623 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 09:23:26,624 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 09:23:26,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:23:26,624 INFO L82 PathProgramCache]: Analyzing trace with hash 1099271783, now seen corresponding path program 1 times [2020-12-09 09:23:26,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 09:23:26,625 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861343900] [2020-12-09 09:23:26,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 09:23:26,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:23:26,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:23:26,706 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861343900] [2020-12-09 09:23:26,706 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 09:23:26,706 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 09:23:26,706 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016919349] [2020-12-09 09:23:26,707 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 09:23:26,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 09:23:26,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 09:23:26,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 09:23:26,709 INFO L87 Difference]: Start difference. First operand 280 states and 739 transitions. Second operand 4 states. [2020-12-09 09:23:26,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:23:26,734 INFO L93 Difference]: Finished difference Result 293 states and 749 transitions. [2020-12-09 09:23:26,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 09:23:26,734 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-12-09 09:23:26,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:23:26,737 INFO L225 Difference]: With dead ends: 293 [2020-12-09 09:23:26,738 INFO L226 Difference]: Without dead ends: 293 [2020-12-09 09:23:26,738 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 09:23:26,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2020-12-09 09:23:26,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 257. [2020-12-09 09:23:26,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2020-12-09 09:23:26,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 671 transitions. [2020-12-09 09:23:26,759 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 671 transitions. Word has length 9 [2020-12-09 09:23:26,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:23:26,759 INFO L481 AbstractCegarLoop]: Abstraction has 257 states and 671 transitions. [2020-12-09 09:23:26,760 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 09:23:26,760 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 671 transitions. [2020-12-09 09:23:26,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 09:23:26,761 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:23:26,761 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 09:23:26,762 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 09:23:26,762 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 09:23:26,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:23:26,763 INFO L82 PathProgramCache]: Analyzing trace with hash -285096968, now seen corresponding path program 1 times [2020-12-09 09:23:26,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 09:23:26,763 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339438707] [2020-12-09 09:23:26,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 09:23:26,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:23:26,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:23:26,813 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339438707] [2020-12-09 09:23:26,814 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 09:23:26,814 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 09:23:26,814 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152490566] [2020-12-09 09:23:26,814 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 09:23:26,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 09:23:26,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 09:23:26,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 09:23:26,815 INFO L87 Difference]: Start difference. First operand 257 states and 671 transitions. Second operand 4 states. [2020-12-09 09:23:26,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:23:26,833 INFO L93 Difference]: Finished difference Result 282 states and 718 transitions. [2020-12-09 09:23:26,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 09:23:26,834 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-12-09 09:23:26,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:23:26,835 INFO L225 Difference]: With dead ends: 282 [2020-12-09 09:23:26,835 INFO L226 Difference]: Without dead ends: 282 [2020-12-09 09:23:26,836 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 09:23:26,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-12-09 09:23:26,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 248. [2020-12-09 09:23:26,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2020-12-09 09:23:26,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 641 transitions. [2020-12-09 09:23:26,845 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 641 transitions. Word has length 10 [2020-12-09 09:23:26,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:23:26,845 INFO L481 AbstractCegarLoop]: Abstraction has 248 states and 641 transitions. [2020-12-09 09:23:26,845 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 09:23:26,845 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 641 transitions. [2020-12-09 09:23:26,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 09:23:26,846 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:23:26,846 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 09:23:26,846 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-09 09:23:26,846 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 09:23:26,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:23:26,847 INFO L82 PathProgramCache]: Analyzing trace with hash -285109461, now seen corresponding path program 1 times [2020-12-09 09:23:26,847 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 09:23:26,847 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013378407] [2020-12-09 09:23:26,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 09:23:26,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:23:26,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:23:26,890 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013378407] [2020-12-09 09:23:26,890 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 09:23:26,890 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 09:23:26,890 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434014132] [2020-12-09 09:23:26,890 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 09:23:26,890 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 09:23:26,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 09:23:26,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 09:23:26,891 INFO L87 Difference]: Start difference. First operand 248 states and 641 transitions. Second operand 4 states. [2020-12-09 09:23:26,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:23:26,908 INFO L93 Difference]: Finished difference Result 264 states and 666 transitions. [2020-12-09 09:23:26,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 09:23:26,909 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-12-09 09:23:26,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:23:26,910 INFO L225 Difference]: With dead ends: 264 [2020-12-09 09:23:26,910 INFO L226 Difference]: Without dead ends: 264 [2020-12-09 09:23:26,911 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 09:23:26,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2020-12-09 09:23:26,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 222. [2020-12-09 09:23:26,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2020-12-09 09:23:26,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 562 transitions. [2020-12-09 09:23:26,917 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 562 transitions. Word has length 10 [2020-12-09 09:23:26,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:23:26,917 INFO L481 AbstractCegarLoop]: Abstraction has 222 states and 562 transitions. [2020-12-09 09:23:26,918 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 09:23:26,918 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 562 transitions. [2020-12-09 09:23:26,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-09 09:23:26,919 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:23:26,919 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 09:23:26,919 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-09 09:23:26,919 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 09:23:26,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:23:26,919 INFO L82 PathProgramCache]: Analyzing trace with hash -162369203, now seen corresponding path program 1 times [2020-12-09 09:23:26,919 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 09:23:26,920 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640241934] [2020-12-09 09:23:26,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 09:23:26,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:23:26,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:23:26,954 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640241934] [2020-12-09 09:23:26,954 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 09:23:26,954 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 09:23:26,955 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692788410] [2020-12-09 09:23:26,955 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 09:23:26,955 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 09:23:26,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 09:23:26,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 09:23:26,955 INFO L87 Difference]: Start difference. First operand 222 states and 562 transitions. Second operand 4 states. [2020-12-09 09:23:26,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:23:26,969 INFO L93 Difference]: Finished difference Result 252 states and 633 transitions. [2020-12-09 09:23:26,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 09:23:26,969 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-09 09:23:26,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:23:26,971 INFO L225 Difference]: With dead ends: 252 [2020-12-09 09:23:26,971 INFO L226 Difference]: Without dead ends: 252 [2020-12-09 09:23:26,971 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 09:23:26,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2020-12-09 09:23:26,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 200. [2020-12-09 09:23:26,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2020-12-09 09:23:26,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 507 transitions. [2020-12-09 09:23:26,976 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 507 transitions. Word has length 11 [2020-12-09 09:23:26,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:23:26,976 INFO L481 AbstractCegarLoop]: Abstraction has 200 states and 507 transitions. [2020-12-09 09:23:26,976 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 09:23:26,976 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 507 transitions. [2020-12-09 09:23:26,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-09 09:23:26,977 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:23:26,977 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 09:23:26,978 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-09 09:23:26,978 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 09:23:26,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:23:26,978 INFO L82 PathProgramCache]: Analyzing trace with hash -732205193, now seen corresponding path program 1 times [2020-12-09 09:23:26,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 09:23:26,978 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354688065] [2020-12-09 09:23:26,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 09:23:26,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:23:27,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:23:27,015 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354688065] [2020-12-09 09:23:27,015 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 09:23:27,015 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 09:23:27,015 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496150115] [2020-12-09 09:23:27,015 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 09:23:27,015 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 09:23:27,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 09:23:27,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 09:23:27,016 INFO L87 Difference]: Start difference. First operand 200 states and 507 transitions. Second operand 5 states. [2020-12-09 09:23:27,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:23:27,038 INFO L93 Difference]: Finished difference Result 304 states and 741 transitions. [2020-12-09 09:23:27,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 09:23:27,039 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-12-09 09:23:27,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:23:27,040 INFO L225 Difference]: With dead ends: 304 [2020-12-09 09:23:27,040 INFO L226 Difference]: Without dead ends: 200 [2020-12-09 09:23:27,041 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-12-09 09:23:27,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-12-09 09:23:27,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 176. [2020-12-09 09:23:27,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-12-09 09:23:27,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 429 transitions. [2020-12-09 09:23:27,048 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 429 transitions. Word has length 12 [2020-12-09 09:23:27,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:23:27,048 INFO L481 AbstractCegarLoop]: Abstraction has 176 states and 429 transitions. [2020-12-09 09:23:27,048 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 09:23:27,048 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 429 transitions. [2020-12-09 09:23:27,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-09 09:23:27,049 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:23:27,049 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 09:23:27,049 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-09 09:23:27,049 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 09:23:27,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:23:27,050 INFO L82 PathProgramCache]: Analyzing trace with hash -737567573, now seen corresponding path program 2 times [2020-12-09 09:23:27,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 09:23:27,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224747525] [2020-12-09 09:23:27,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 09:23:27,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:23:27,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:23:27,094 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224747525] [2020-12-09 09:23:27,094 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 09:23:27,094 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 09:23:27,094 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489290945] [2020-12-09 09:23:27,094 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 09:23:27,094 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 09:23:27,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 09:23:27,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 09:23:27,095 INFO L87 Difference]: Start difference. First operand 176 states and 429 transitions. Second operand 5 states. [2020-12-09 09:23:27,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:23:27,121 INFO L93 Difference]: Finished difference Result 228 states and 521 transitions. [2020-12-09 09:23:27,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 09:23:27,121 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-12-09 09:23:27,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:23:27,123 INFO L225 Difference]: With dead ends: 228 [2020-12-09 09:23:27,123 INFO L226 Difference]: Without dead ends: 148 [2020-12-09 09:23:27,123 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-12-09 09:23:27,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-12-09 09:23:27,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 124. [2020-12-09 09:23:27,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-12-09 09:23:27,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 279 transitions. [2020-12-09 09:23:27,127 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 279 transitions. Word has length 12 [2020-12-09 09:23:27,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:23:27,127 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 279 transitions. [2020-12-09 09:23:27,127 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 09:23:27,127 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 279 transitions. [2020-12-09 09:23:27,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-09 09:23:27,128 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:23:27,128 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 09:23:27,128 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-09 09:23:27,129 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 09:23:27,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:23:27,129 INFO L82 PathProgramCache]: Analyzing trace with hash -738490133, now seen corresponding path program 3 times [2020-12-09 09:23:27,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 09:23:27,129 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044865508] [2020-12-09 09:23:27,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 09:23:27,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:23:27,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:23:27,167 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044865508] [2020-12-09 09:23:27,167 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 09:23:27,167 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 09:23:27,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601326104] [2020-12-09 09:23:27,168 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 09:23:27,168 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 09:23:27,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 09:23:27,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 09:23:27,169 INFO L87 Difference]: Start difference. First operand 124 states and 279 transitions. Second operand 4 states. [2020-12-09 09:23:27,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:23:27,187 INFO L93 Difference]: Finished difference Result 138 states and 286 transitions. [2020-12-09 09:23:27,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 09:23:27,188 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-12-09 09:23:27,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:23:27,188 INFO L225 Difference]: With dead ends: 138 [2020-12-09 09:23:27,188 INFO L226 Difference]: Without dead ends: 106 [2020-12-09 09:23:27,189 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 09:23:27,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-12-09 09:23:27,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2020-12-09 09:23:27,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-12-09 09:23:27,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 218 transitions. [2020-12-09 09:23:27,191 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 218 transitions. Word has length 12 [2020-12-09 09:23:27,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:23:27,192 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 218 transitions. [2020-12-09 09:23:27,192 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 09:23:27,192 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 218 transitions. [2020-12-09 09:23:27,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-09 09:23:27,192 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:23:27,192 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 09:23:27,192 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-09 09:23:27,192 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 09:23:27,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:23:27,193 INFO L82 PathProgramCache]: Analyzing trace with hash -1418345754, now seen corresponding path program 1 times [2020-12-09 09:23:27,193 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 09:23:27,193 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383130494] [2020-12-09 09:23:27,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 09:23:27,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:23:27,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:23:27,223 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383130494] [2020-12-09 09:23:27,224 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 09:23:27,224 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 09:23:27,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616052030] [2020-12-09 09:23:27,224 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 09:23:27,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 09:23:27,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 09:23:27,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 09:23:27,225 INFO L87 Difference]: Start difference. First operand 106 states and 218 transitions. Second operand 5 states. [2020-12-09 09:23:27,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:23:27,256 INFO L93 Difference]: Finished difference Result 101 states and 198 transitions. [2020-12-09 09:23:27,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 09:23:27,256 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-12-09 09:23:27,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:23:27,257 INFO L225 Difference]: With dead ends: 101 [2020-12-09 09:23:27,257 INFO L226 Difference]: Without dead ends: 81 [2020-12-09 09:23:27,257 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-09 09:23:27,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-12-09 09:23:27,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2020-12-09 09:23:27,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-12-09 09:23:27,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 157 transitions. [2020-12-09 09:23:27,259 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 157 transitions. Word has length 13 [2020-12-09 09:23:27,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:23:27,259 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 157 transitions. [2020-12-09 09:23:27,259 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 09:23:27,259 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 157 transitions. [2020-12-09 09:23:27,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-09 09:23:27,260 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:23:27,260 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 09:23:27,260 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-09 09:23:27,260 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 09:23:27,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:23:27,260 INFO L82 PathProgramCache]: Analyzing trace with hash -226822936, now seen corresponding path program 1 times [2020-12-09 09:23:27,260 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 09:23:27,260 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64179022] [2020-12-09 09:23:27,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 09:23:27,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:23:27,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:23:27,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64179022] [2020-12-09 09:23:27,294 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 09:23:27,294 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 09:23:27,294 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849095875] [2020-12-09 09:23:27,295 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 09:23:27,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 09:23:27,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 09:23:27,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-09 09:23:27,295 INFO L87 Difference]: Start difference. First operand 81 states and 157 transitions. Second operand 6 states. [2020-12-09 09:23:27,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:23:27,315 INFO L93 Difference]: Finished difference Result 76 states and 151 transitions. [2020-12-09 09:23:27,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 09:23:27,315 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-12-09 09:23:27,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:23:27,315 INFO L225 Difference]: With dead ends: 76 [2020-12-09 09:23:27,315 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 09:23:27,315 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-12-09 09:23:27,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 09:23:27,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 09:23:27,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 09:23:27,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 09:23:27,316 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-12-09 09:23:27,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:23:27,316 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 09:23:27,316 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 09:23:27,316 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 09:23:27,316 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 09:23:27,316 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-09 09:23:27,318 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 09:23:27 BasicIcfg [2020-12-09 09:23:27,318 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 09:23:27,319 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 09:23:27,319 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 09:23:27,319 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 09:23:27,319 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 09:23:24" (3/4) ... [2020-12-09 09:23:27,321 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 09:23:27,326 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-12-09 09:23:27,326 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-12-09 09:23:27,326 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-12-09 09:23:27,329 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-12-09 09:23:27,329 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-09 09:23:27,329 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 09:23:27,329 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 09:23:27,357 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_7f91a55f-93c8-4077-85a6-2a904c06c5db/bin/utaipan/witness.graphml [2020-12-09 09:23:27,357 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 09:23:27,358 INFO L168 Benchmark]: Toolchain (without parser) took 3976.18 ms. Allocated memory was 125.8 MB in the beginning and 151.0 MB in the end (delta: 25.2 MB). Free memory was 87.4 MB in the beginning and 104.7 MB in the end (delta: -17.3 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. [2020-12-09 09:23:27,358 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 125.8 MB. Free memory is still 105.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 09:23:27,358 INFO L168 Benchmark]: CACSL2BoogieTranslator took 345.73 ms. Allocated memory is still 125.8 MB. Free memory was 87.3 MB in the beginning and 80.6 MB in the end (delta: 6.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-12-09 09:23:27,359 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.95 ms. Allocated memory is still 125.8 MB. Free memory was 80.6 MB in the beginning and 78.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 09:23:27,359 INFO L168 Benchmark]: Boogie Preprocessor took 17.76 ms. Allocated memory is still 125.8 MB. Free memory was 78.9 MB in the beginning and 77.7 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 09:23:27,360 INFO L168 Benchmark]: RCFGBuilder took 295.44 ms. Allocated memory is still 125.8 MB. Free memory was 77.7 MB in the beginning and 55.2 MB in the end (delta: 22.5 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2020-12-09 09:23:27,360 INFO L168 Benchmark]: TraceAbstraction took 3245.07 ms. Allocated memory was 125.8 MB in the beginning and 151.0 MB in the end (delta: 25.2 MB). Free memory was 54.6 MB in the beginning and 107.8 MB in the end (delta: -53.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 09:23:27,360 INFO L168 Benchmark]: Witness Printer took 38.22 ms. Allocated memory is still 151.0 MB. Free memory was 107.8 MB in the beginning and 104.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-09 09:23:27,363 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 125.8 MB. Free memory is still 105.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 345.73 ms. Allocated memory is still 125.8 MB. Free memory was 87.3 MB in the beginning and 80.6 MB in the end (delta: 6.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 28.95 ms. Allocated memory is still 125.8 MB. Free memory was 80.6 MB in the beginning and 78.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 17.76 ms. Allocated memory is still 125.8 MB. Free memory was 78.9 MB in the beginning and 77.7 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 295.44 ms. Allocated memory is still 125.8 MB. Free memory was 77.7 MB in the beginning and 55.2 MB in the end (delta: 22.5 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3245.07 ms. Allocated memory was 125.8 MB in the beginning and 151.0 MB in the end (delta: 25.2 MB). Free memory was 54.6 MB in the beginning and 107.8 MB in the end (delta: -53.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 38.22 ms. Allocated memory is still 151.0 MB. Free memory was 107.8 MB in the beginning and 104.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 796 VarBasedMoverChecksPositive, 42 VarBasedMoverChecksNegative, 9 SemBasedMoverChecksPositive, 33 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 57 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.0s, 82 PlacesBefore, 31 PlacesAfterwards, 74 TransitionsBefore, 22 TransitionsAfterwards, 1296 CoEnabledTransitionPairs, 6 FixpointIterations, 17 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 1 ChoiceCompositions, 64 TotalNumberOfCompositions, 2553 MoverChecksTotal - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 73 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.1s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.1s, HoareTripleCheckerStatistics: 187 SDtfs, 205 SDslu, 256 SDs, 0 SdLazy, 143 SolverSat, 50 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 247 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 112 NumberOfCodeBlocks, 112 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 102 ConstructedInterpolants, 0 QuantifiedInterpolants, 5766 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...