./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe008_tso.opt.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_90a18922-531f-4915-9655-fef74c8fe745/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_90a18922-531f-4915-9655-fef74c8fe745/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_90a18922-531f-4915-9655-fef74c8fe745/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_90a18922-531f-4915-9655-fef74c8fe745/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe008_tso.opt.i -s /tmp/vcloud-vcloud-master/worker/run_dir_90a18922-531f-4915-9655-fef74c8fe745/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_90a18922-531f-4915-9655-fef74c8fe745/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 ea0dd35677cfacf05fc27f5cca6df484a5bc4e8e ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 11:21:27,018 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 11:21:27,020 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 11:21:27,046 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 11:21:27,047 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 11:21:27,048 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 11:21:27,059 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 11:21:27,061 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 11:21:27,063 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 11:21:27,065 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 11:21:27,066 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 11:21:27,067 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 11:21:27,068 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 11:21:27,069 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 11:21:27,070 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 11:21:27,071 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 11:21:27,072 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 11:21:27,073 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 11:21:27,075 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 11:21:27,077 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 11:21:27,079 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 11:21:27,080 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 11:21:27,082 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 11:21:27,083 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 11:21:27,086 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 11:21:27,086 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 11:21:27,086 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 11:21:27,087 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 11:21:27,088 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 11:21:27,089 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 11:21:27,089 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 11:21:27,090 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 11:21:27,091 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 11:21:27,092 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 11:21:27,093 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 11:21:27,093 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 11:21:27,094 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 11:21:27,094 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 11:21:27,094 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 11:21:27,095 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 11:21:27,095 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 11:21:27,096 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_90a18922-531f-4915-9655-fef74c8fe745/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 11:21:27,119 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 11:21:27,120 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 11:21:27,120 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 11:21:27,121 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 11:21:27,121 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 11:21:27,121 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 11:21:27,121 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 11:21:27,121 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 11:21:27,121 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 11:21:27,122 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 11:21:27,122 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 11:21:27,122 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 11:21:27,122 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 11:21:27,122 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 11:21:27,123 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 11:21:27,123 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 11:21:27,123 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 11:21:27,124 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 11:21:27,124 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 11:21:27,124 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 11:21:27,124 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 11:21:27,124 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 11:21:27,124 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 11:21:27,125 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 11:21:27,125 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 11:21:27,125 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 11:21:27,125 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 11:21:27,125 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 11:21:27,125 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 11:21:27,126 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 11:21:27,126 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 11:21:27,126 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 11:21:27,126 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 11:21:27,126 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 11:21:27,127 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 11:21:27,127 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 11:21:27,127 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 11:21:27,127 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 11:21:27,127 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 11:21:27,128 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_90a18922-531f-4915-9655-fef74c8fe745/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_90a18922-531f-4915-9655-fef74c8fe745/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ea0dd35677cfacf05fc27f5cca6df484a5bc4e8e [2020-12-09 11:21:27,301 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 11:21:27,318 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 11:21:27,320 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 11:21:27,321 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 11:21:27,322 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 11:21:27,323 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_90a18922-531f-4915-9655-fef74c8fe745/bin/utaipan/../../sv-benchmarks/c/pthread-wmm/safe008_tso.opt.i [2020-12-09 11:21:27,365 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_90a18922-531f-4915-9655-fef74c8fe745/bin/utaipan/data/50c89dd2a/5c640bf14433431ba031ae9bbf7d3693/FLAGf7303f8e9 [2020-12-09 11:21:27,779 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 11:21:27,780 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_90a18922-531f-4915-9655-fef74c8fe745/sv-benchmarks/c/pthread-wmm/safe008_tso.opt.i [2020-12-09 11:21:27,792 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_90a18922-531f-4915-9655-fef74c8fe745/bin/utaipan/data/50c89dd2a/5c640bf14433431ba031ae9bbf7d3693/FLAGf7303f8e9 [2020-12-09 11:21:27,802 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_90a18922-531f-4915-9655-fef74c8fe745/bin/utaipan/data/50c89dd2a/5c640bf14433431ba031ae9bbf7d3693 [2020-12-09 11:21:27,804 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 11:21:27,805 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 11:21:27,806 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 11:21:27,806 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 11:21:27,808 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 11:21:27,809 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 11:21:27" (1/1) ... [2020-12-09 11:21:27,810 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f58341e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:21:27, skipping insertion in model container [2020-12-09 11:21:27,811 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 11:21:27" (1/1) ... [2020-12-09 11:21:27,816 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 11:21:27,845 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 11:21:27,967 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_90a18922-531f-4915-9655-fef74c8fe745/sv-benchmarks/c/pthread-wmm/safe008_tso.opt.i[949,962] [2020-12-09 11:21:28,086 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 11:21:28,093 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 11:21:28,102 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_90a18922-531f-4915-9655-fef74c8fe745/sv-benchmarks/c/pthread-wmm/safe008_tso.opt.i[949,962] [2020-12-09 11:21:28,132 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 11:21:28,186 INFO L208 MainTranslator]: Completed translation [2020-12-09 11:21:28,186 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:21:28 WrapperNode [2020-12-09 11:21:28,187 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 11:21:28,187 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 11:21:28,187 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 11:21:28,188 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 11:21:28,193 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:21:28" (1/1) ... [2020-12-09 11:21:28,204 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:21:28" (1/1) ... [2020-12-09 11:21:28,218 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 11:21:28,219 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 11:21:28,219 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 11:21:28,219 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 11:21:28,225 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:21:28" (1/1) ... [2020-12-09 11:21:28,225 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:21:28" (1/1) ... [2020-12-09 11:21:28,227 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:21:28" (1/1) ... [2020-12-09 11:21:28,228 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:21:28" (1/1) ... [2020-12-09 11:21:28,232 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:21:28" (1/1) ... [2020-12-09 11:21:28,234 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:21:28" (1/1) ... [2020-12-09 11:21:28,236 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:21:28" (1/1) ... [2020-12-09 11:21:28,238 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 11:21:28,239 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 11:21:28,239 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 11:21:28,239 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 11:21:28,240 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:21:28" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_90a18922-531f-4915-9655-fef74c8fe745/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 11:21:28,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-09 11:21:28,296 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-09 11:21:28,296 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 11:21:28,296 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-09 11:21:28,296 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-09 11:21:28,296 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-09 11:21:28,296 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-09 11:21:28,296 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-09 11:21:28,296 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-12-09 11:21:28,296 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-12-09 11:21:28,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 11:21:28,297 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-09 11:21:28,297 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 11:21:28,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 11:21:28,298 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 11:21:28,526 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 11:21:28,526 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-09 11:21:28,528 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 11:21:28 BoogieIcfgContainer [2020-12-09 11:21:28,528 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 11:21:28,529 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 11:21:28,529 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 11:21:28,532 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 11:21:28,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 11:21:27" (1/3) ... [2020-12-09 11:21:28,532 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dcf6c58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 11:21:28, skipping insertion in model container [2020-12-09 11:21:28,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:21:28" (2/3) ... [2020-12-09 11:21:28,533 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dcf6c58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 11:21:28, skipping insertion in model container [2020-12-09 11:21:28,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 11:21:28" (3/3) ... [2020-12-09 11:21:28,534 INFO L111 eAbstractionObserver]: Analyzing ICFG safe008_tso.opt.i [2020-12-09 11:21:28,544 WARN L169 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-09 11:21:28,544 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 11:21:28,546 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 11:21:28,547 INFO L354 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-09 11:21:28,568 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 11:21:28,569 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 11:21:28,569 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 11:21:28,569 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 11:21:28,569 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 11:21:28,569 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 11:21:28,569 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 11:21:28,569 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 11:21:28,570 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 11:21:28,570 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 11:21:28,570 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 11:21:28,570 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 11:21:28,571 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 11:21:28,571 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 11:21:28,571 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 11:21:28,571 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 11:21:28,571 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 11:21:28,571 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 11:21:28,571 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 11:21:28,571 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 11:21:28,572 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 11:21:28,572 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 11:21:28,572 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 11:21:28,572 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 11:21:28,572 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 11:21:28,573 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 11:21:28,573 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 11:21:28,573 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 11:21:28,573 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 11:21:28,573 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 11:21:28,573 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 11:21:28,573 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 11:21:28,574 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 11:21:28,574 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 11:21:28,574 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 11:21:28,574 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 11:21:28,576 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 11:21:28,576 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 11:21:28,576 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 11:21:28,576 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 11:21:28,580 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 11:21:28,580 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 11:21:28,580 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 11:21:28,580 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 11:21:28,582 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 11:21:28,582 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 11:21:28,582 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 11:21:28,582 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 11:21:28,584 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-09 11:21:28,592 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-09 11:21:28,607 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 11:21:28,607 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 11:21:28,607 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 11:21:28,607 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 11:21:28,607 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 11:21:28,607 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 11:21:28,607 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 11:21:28,607 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 11:21:28,616 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-09 11:21:28,617 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 83 places, 75 transitions, 165 flow [2020-12-09 11:21:28,620 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 83 places, 75 transitions, 165 flow [2020-12-09 11:21:28,621 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 83 places, 75 transitions, 165 flow [2020-12-09 11:21:28,652 INFO L129 PetriNetUnfolder]: 2/72 cut-off events. [2020-12-09 11:21:28,652 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-09 11:21:28,655 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 72 events. 2/72 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. 0/69 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2020-12-09 11:21:28,657 INFO L116 LiptonReduction]: Number of co-enabled transitions 1296 [2020-12-09 11:21:30,317 WARN L197 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-12-09 11:21:30,524 WARN L197 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-12-09 11:21:30,590 INFO L131 LiptonReduction]: Checked pairs total: 2563 [2020-12-09 11:21:30,590 INFO L133 LiptonReduction]: Total number of compositions: 61 [2020-12-09 11:21:30,594 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-12-09 11:21:30,611 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-12-09 11:21:30,613 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-12-09 11:21:30,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 11:21:30,617 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 11:21:30,617 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 11:21:30,617 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 11:21:30,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 11:21:30,621 INFO L82 PathProgramCache]: Analyzing trace with hash -1485857802, now seen corresponding path program 1 times [2020-12-09 11:21:30,627 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 11:21:30,628 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344119889] [2020-12-09 11:21:30,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 11:21:30,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 11:21:30,735 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 11:21:30,735 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344119889] [2020-12-09 11:21:30,736 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 11:21:30,736 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 11:21:30,736 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421165273] [2020-12-09 11:21:30,739 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 11:21:30,739 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 11:21:30,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 11:21:30,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 11:21:30,750 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-12-09 11:21:30,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 11:21:30,771 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-12-09 11:21:30,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 11:21:30,772 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-12-09 11:21:30,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 11:21:30,782 INFO L225 Difference]: With dead ends: 362 [2020-12-09 11:21:30,782 INFO L226 Difference]: Without dead ends: 298 [2020-12-09 11:21:30,783 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 11:21:30,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-12-09 11:21:30,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-12-09 11:21:30,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-12-09 11:21:30,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-12-09 11:21:30,829 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-12-09 11:21:30,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 11:21:30,830 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-12-09 11:21:30,830 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 11:21:30,830 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-12-09 11:21:30,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-09 11:21:30,831 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 11:21:30,831 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 11:21:30,832 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 11:21:30,832 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 11:21:30,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 11:21:30,832 INFO L82 PathProgramCache]: Analyzing trace with hash 1183024898, now seen corresponding path program 1 times [2020-12-09 11:21:30,832 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 11:21:30,832 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725496631] [2020-12-09 11:21:30,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 11:21:30,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 11:21:30,922 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 11:21:30,922 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725496631] [2020-12-09 11:21:30,923 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 11:21:30,923 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 11:21:30,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123351487] [2020-12-09 11:21:30,924 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 11:21:30,924 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 11:21:30,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 11:21:30,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 11:21:30,925 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 4 states. [2020-12-09 11:21:30,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 11:21:30,958 INFO L93 Difference]: Finished difference Result 510 states and 1386 transitions. [2020-12-09 11:21:30,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 11:21:30,959 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-12-09 11:21:30,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 11:21:30,963 INFO L225 Difference]: With dead ends: 510 [2020-12-09 11:21:30,963 INFO L226 Difference]: Without dead ends: 380 [2020-12-09 11:21:30,963 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 11:21:30,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2020-12-09 11:21:30,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 320. [2020-12-09 11:21:30,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 320 states. [2020-12-09 11:21:30,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 900 transitions. [2020-12-09 11:21:30,992 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 900 transitions. Word has length 9 [2020-12-09 11:21:30,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 11:21:30,992 INFO L481 AbstractCegarLoop]: Abstraction has 320 states and 900 transitions. [2020-12-09 11:21:30,992 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 11:21:30,992 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 900 transitions. [2020-12-09 11:21:30,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 11:21:30,994 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 11:21:30,994 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 11:21:30,994 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 11:21:30,995 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 11:21:30,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 11:21:30,995 INFO L82 PathProgramCache]: Analyzing trace with hash 995647992, now seen corresponding path program 1 times [2020-12-09 11:21:30,995 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 11:21:30,996 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116911696] [2020-12-09 11:21:31,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 11:21:31,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 11:21:31,074 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 11:21:31,074 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116911696] [2020-12-09 11:21:31,074 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 11:21:31,074 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 11:21:31,074 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644869819] [2020-12-09 11:21:31,075 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 11:21:31,075 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 11:21:31,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 11:21:31,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 11:21:31,075 INFO L87 Difference]: Start difference. First operand 320 states and 900 transitions. Second operand 5 states. [2020-12-09 11:21:31,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 11:21:31,113 INFO L93 Difference]: Finished difference Result 428 states and 1125 transitions. [2020-12-09 11:21:31,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 11:21:31,114 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-12-09 11:21:31,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 11:21:31,116 INFO L225 Difference]: With dead ends: 428 [2020-12-09 11:21:31,116 INFO L226 Difference]: Without dead ends: 350 [2020-12-09 11:21:31,116 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-09 11:21:31,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2020-12-09 11:21:31,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 290. [2020-12-09 11:21:31,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2020-12-09 11:21:31,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 796 transitions. [2020-12-09 11:21:31,127 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 796 transitions. Word has length 10 [2020-12-09 11:21:31,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 11:21:31,127 INFO L481 AbstractCegarLoop]: Abstraction has 290 states and 796 transitions. [2020-12-09 11:21:31,127 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 11:21:31,127 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 796 transitions. [2020-12-09 11:21:31,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 11:21:31,128 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 11:21:31,128 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 11:21:31,128 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-09 11:21:31,128 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 11:21:31,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 11:21:31,129 INFO L82 PathProgramCache]: Analyzing trace with hash -1980956361, now seen corresponding path program 1 times [2020-12-09 11:21:31,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 11:21:31,129 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449152241] [2020-12-09 11:21:31,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 11:21:31,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 11:21:31,174 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 11:21:31,175 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449152241] [2020-12-09 11:21:31,175 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 11:21:31,175 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 11:21:31,175 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712095654] [2020-12-09 11:21:31,176 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 11:21:31,176 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 11:21:31,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 11:21:31,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 11:21:31,177 INFO L87 Difference]: Start difference. First operand 290 states and 796 transitions. Second operand 5 states. [2020-12-09 11:21:31,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 11:21:31,213 INFO L93 Difference]: Finished difference Result 404 states and 1037 transitions. [2020-12-09 11:21:31,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 11:21:31,213 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-12-09 11:21:31,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 11:21:31,216 INFO L225 Difference]: With dead ends: 404 [2020-12-09 11:21:31,216 INFO L226 Difference]: Without dead ends: 326 [2020-12-09 11:21:31,217 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-09 11:21:31,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2020-12-09 11:21:31,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 278. [2020-12-09 11:21:31,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2020-12-09 11:21:31,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 754 transitions. [2020-12-09 11:21:31,229 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 754 transitions. Word has length 10 [2020-12-09 11:21:31,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 11:21:31,229 INFO L481 AbstractCegarLoop]: Abstraction has 278 states and 754 transitions. [2020-12-09 11:21:31,229 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 11:21:31,229 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 754 transitions. [2020-12-09 11:21:31,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-09 11:21:31,231 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 11:21:31,231 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 11:21:31,231 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-09 11:21:31,231 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 11:21:31,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 11:21:31,232 INFO L82 PathProgramCache]: Analyzing trace with hash 800294145, now seen corresponding path program 1 times [2020-12-09 11:21:31,232 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 11:21:31,232 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82481177] [2020-12-09 11:21:31,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 11:21:31,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 11:21:31,284 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 11:21:31,284 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82481177] [2020-12-09 11:21:31,285 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 11:21:31,285 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 11:21:31,285 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560027063] [2020-12-09 11:21:31,285 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 11:21:31,285 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 11:21:31,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 11:21:31,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 11:21:31,286 INFO L87 Difference]: Start difference. First operand 278 states and 754 transitions. Second operand 5 states. [2020-12-09 11:21:31,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 11:21:31,346 INFO L93 Difference]: Finished difference Result 419 states and 1082 transitions. [2020-12-09 11:21:31,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-09 11:21:31,346 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-12-09 11:21:31,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 11:21:31,349 INFO L225 Difference]: With dead ends: 419 [2020-12-09 11:21:31,349 INFO L226 Difference]: Without dead ends: 338 [2020-12-09 11:21:31,349 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-09 11:21:31,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2020-12-09 11:21:31,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 284. [2020-12-09 11:21:31,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 284 states. [2020-12-09 11:21:31,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 767 transitions. [2020-12-09 11:21:31,357 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 767 transitions. Word has length 11 [2020-12-09 11:21:31,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 11:21:31,357 INFO L481 AbstractCegarLoop]: Abstraction has 284 states and 767 transitions. [2020-12-09 11:21:31,357 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 11:21:31,357 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 767 transitions. [2020-12-09 11:21:31,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-09 11:21:31,358 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 11:21:31,358 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 11:21:31,358 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-09 11:21:31,358 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 11:21:31,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 11:21:31,359 INFO L82 PathProgramCache]: Analyzing trace with hash -1280130465, now seen corresponding path program 2 times [2020-12-09 11:21:31,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 11:21:31,359 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708965643] [2020-12-09 11:21:31,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 11:21:31,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 11:21:31,414 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 11:21:31,414 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708965643] [2020-12-09 11:21:31,414 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 11:21:31,414 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 11:21:31,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629590517] [2020-12-09 11:21:31,415 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 11:21:31,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 11:21:31,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 11:21:31,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-09 11:21:31,416 INFO L87 Difference]: Start difference. First operand 284 states and 767 transitions. Second operand 6 states. [2020-12-09 11:21:31,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 11:21:31,460 INFO L93 Difference]: Finished difference Result 350 states and 895 transitions. [2020-12-09 11:21:31,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 11:21:31,461 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-12-09 11:21:31,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 11:21:31,462 INFO L225 Difference]: With dead ends: 350 [2020-12-09 11:21:31,463 INFO L226 Difference]: Without dead ends: 182 [2020-12-09 11:21:31,463 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-09 11:21:31,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-12-09 11:21:31,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 158. [2020-12-09 11:21:31,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-12-09 11:21:31,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 382 transitions. [2020-12-09 11:21:31,470 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 382 transitions. Word has length 11 [2020-12-09 11:21:31,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 11:21:31,470 INFO L481 AbstractCegarLoop]: Abstraction has 158 states and 382 transitions. [2020-12-09 11:21:31,471 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 11:21:31,471 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 382 transitions. [2020-12-09 11:21:31,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-09 11:21:31,472 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 11:21:31,472 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 11:21:31,472 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-09 11:21:31,472 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 11:21:31,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 11:21:31,473 INFO L82 PathProgramCache]: Analyzing trace with hash -1283691266, now seen corresponding path program 1 times [2020-12-09 11:21:31,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 11:21:31,473 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150694404] [2020-12-09 11:21:31,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 11:21:31,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 11:21:31,522 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 11:21:31,522 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150694404] [2020-12-09 11:21:31,523 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 11:21:31,523 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 11:21:31,523 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209028476] [2020-12-09 11:21:31,523 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 11:21:31,523 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 11:21:31,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 11:21:31,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 11:21:31,524 INFO L87 Difference]: Start difference. First operand 158 states and 382 transitions. Second operand 5 states. [2020-12-09 11:21:31,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 11:21:31,560 INFO L93 Difference]: Finished difference Result 196 states and 453 transitions. [2020-12-09 11:21:31,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 11:21:31,560 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-12-09 11:21:31,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 11:21:31,561 INFO L225 Difference]: With dead ends: 196 [2020-12-09 11:21:31,561 INFO L226 Difference]: Without dead ends: 82 [2020-12-09 11:21:31,561 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-09 11:21:31,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-12-09 11:21:31,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2020-12-09 11:21:31,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-12-09 11:21:31,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 170 transitions. [2020-12-09 11:21:31,563 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 170 transitions. Word has length 13 [2020-12-09 11:21:31,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 11:21:31,563 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 170 transitions. [2020-12-09 11:21:31,564 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 11:21:31,564 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 170 transitions. [2020-12-09 11:21:31,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-09 11:21:31,564 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 11:21:31,564 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 11:21:31,564 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-09 11:21:31,564 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 11:21:31,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 11:21:31,565 INFO L82 PathProgramCache]: Analyzing trace with hash -1802492984, now seen corresponding path program 1 times [2020-12-09 11:21:31,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 11:21:31,565 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456990679] [2020-12-09 11:21:31,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 11:21:31,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 11:21:31,595 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 11:21:31,596 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456990679] [2020-12-09 11:21:31,596 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 11:21:31,596 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 11:21:31,596 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48036624] [2020-12-09 11:21:31,596 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 11:21:31,596 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 11:21:31,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 11:21:31,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 11:21:31,597 INFO L87 Difference]: Start difference. First operand 82 states and 170 transitions. Second operand 4 states. [2020-12-09 11:21:31,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 11:21:31,616 INFO L93 Difference]: Finished difference Result 84 states and 159 transitions. [2020-12-09 11:21:31,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 11:21:31,616 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-12-09 11:21:31,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 11:21:31,617 INFO L225 Difference]: With dead ends: 84 [2020-12-09 11:21:31,617 INFO L226 Difference]: Without dead ends: 70 [2020-12-09 11:21:31,618 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 11:21:31,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-12-09 11:21:31,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2020-12-09 11:21:31,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-12-09 11:21:31,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 133 transitions. [2020-12-09 11:21:31,620 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 133 transitions. Word has length 14 [2020-12-09 11:21:31,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 11:21:31,621 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 133 transitions. [2020-12-09 11:21:31,621 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 11:21:31,621 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 133 transitions. [2020-12-09 11:21:31,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-09 11:21:31,621 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 11:21:31,621 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 11:21:31,622 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-09 11:21:31,622 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 11:21:31,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 11:21:31,622 INFO L82 PathProgramCache]: Analyzing trace with hash -1849440776, now seen corresponding path program 1 times [2020-12-09 11:21:31,622 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 11:21:31,623 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093067119] [2020-12-09 11:21:31,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 11:21:31,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 11:21:31,662 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 11:21:31,662 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093067119] [2020-12-09 11:21:31,662 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 11:21:31,662 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 11:21:31,662 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302200322] [2020-12-09 11:21:31,663 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 11:21:31,663 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 11:21:31,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 11:21:31,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 11:21:31,664 INFO L87 Difference]: Start difference. First operand 70 states and 133 transitions. Second operand 5 states. [2020-12-09 11:21:31,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 11:21:31,693 INFO L93 Difference]: Finished difference Result 60 states and 106 transitions. [2020-12-09 11:21:31,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 11:21:31,694 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-12-09 11:21:31,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 11:21:31,694 INFO L225 Difference]: With dead ends: 60 [2020-12-09 11:21:31,694 INFO L226 Difference]: Without dead ends: 52 [2020-12-09 11:21:31,695 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 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 11:21:31,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-12-09 11:21:31,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-12-09 11:21:31,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-12-09 11:21:31,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 91 transitions. [2020-12-09 11:21:31,696 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 91 transitions. Word has length 15 [2020-12-09 11:21:31,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 11:21:31,696 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 91 transitions. [2020-12-09 11:21:31,697 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 11:21:31,697 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 91 transitions. [2020-12-09 11:21:31,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-09 11:21:31,697 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 11:21:31,697 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 11:21:31,697 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-09 11:21:31,697 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 11:21:31,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 11:21:31,698 INFO L82 PathProgramCache]: Analyzing trace with hash 1050921859, now seen corresponding path program 1 times [2020-12-09 11:21:31,698 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 11:21:31,698 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447028498] [2020-12-09 11:21:31,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 11:21:31,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 11:21:31,733 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 11:21:31,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447028498] [2020-12-09 11:21:31,734 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 11:21:31,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 11:21:31,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881177852] [2020-12-09 11:21:31,734 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 11:21:31,734 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 11:21:31,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 11:21:31,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-09 11:21:31,735 INFO L87 Difference]: Start difference. First operand 52 states and 91 transitions. Second operand 6 states. [2020-12-09 11:21:31,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 11:21:31,751 INFO L93 Difference]: Finished difference Result 46 states and 83 transitions. [2020-12-09 11:21:31,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 11:21:31,751 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-12-09 11:21:31,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 11:21:31,752 INFO L225 Difference]: With dead ends: 46 [2020-12-09 11:21:31,752 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 11:21:31,752 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 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 11:21:31,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 11:21:31,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 11:21:31,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 11:21:31,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 11:21:31,753 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-12-09 11:21:31,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 11:21:31,753 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 11:21:31,753 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 11:21:31,753 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 11:21:31,753 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 11:21:31,754 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-09 11:21:31,756 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 11:21:31 BasicIcfg [2020-12-09 11:21:31,756 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 11:21:31,757 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 11:21:31,757 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 11:21:31,757 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 11:21:31,757 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 11:21:28" (3/4) ... [2020-12-09 11:21:31,760 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 11:21:31,766 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-12-09 11:21:31,766 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-12-09 11:21:31,766 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-12-09 11:21:31,770 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-12-09 11:21:31,770 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-09 11:21:31,770 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 11:21:31,771 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 11:21:31,799 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_90a18922-531f-4915-9655-fef74c8fe745/bin/utaipan/witness.graphml [2020-12-09 11:21:31,799 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 11:21:31,800 INFO L168 Benchmark]: Toolchain (without parser) took 3995.22 ms. Allocated memory was 102.8 MB in the beginning and 148.9 MB in the end (delta: 46.1 MB). Free memory was 63.9 MB in the beginning and 44.5 MB in the end (delta: 19.4 MB). Peak memory consumption was 65.6 MB. Max. memory is 16.1 GB. [2020-12-09 11:21:31,801 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 102.8 MB. Free memory was 81.6 MB in the beginning and 81.6 MB in the end (delta: 71.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 11:21:31,801 INFO L168 Benchmark]: CACSL2BoogieTranslator took 380.80 ms. Allocated memory is still 102.8 MB. Free memory was 63.8 MB in the beginning and 58.0 MB in the end (delta: 5.8 MB). Peak memory consumption was 8.5 MB. Max. memory is 16.1 GB. [2020-12-09 11:21:31,802 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.90 ms. Allocated memory is still 102.8 MB. Free memory was 57.6 MB in the beginning and 55.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 11:21:31,802 INFO L168 Benchmark]: Boogie Preprocessor took 19.57 ms. Allocated memory is still 102.8 MB. Free memory was 55.9 MB in the beginning and 54.6 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 11:21:31,803 INFO L168 Benchmark]: RCFGBuilder took 289.09 ms. Allocated memory was 102.8 MB in the beginning and 123.7 MB in the end (delta: 21.0 MB). Free memory was 54.6 MB in the beginning and 97.1 MB in the end (delta: -42.5 MB). Peak memory consumption was 27.6 MB. Max. memory is 16.1 GB. [2020-12-09 11:21:31,803 INFO L168 Benchmark]: TraceAbstraction took 3227.12 ms. Allocated memory was 123.7 MB in the beginning and 148.9 MB in the end (delta: 25.2 MB). Free memory was 96.2 MB in the beginning and 47.7 MB in the end (delta: 48.5 MB). Peak memory consumption was 73.3 MB. Max. memory is 16.1 GB. [2020-12-09 11:21:31,803 INFO L168 Benchmark]: Witness Printer took 42.94 ms. Allocated memory is still 148.9 MB. Free memory was 47.7 MB in the beginning and 44.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-09 11:21:31,805 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 102.8 MB. Free memory was 81.6 MB in the beginning and 81.6 MB in the end (delta: 71.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 380.80 ms. Allocated memory is still 102.8 MB. Free memory was 63.8 MB in the beginning and 58.0 MB in the end (delta: 5.8 MB). Peak memory consumption was 8.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 30.90 ms. Allocated memory is still 102.8 MB. Free memory was 57.6 MB in the beginning and 55.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 19.57 ms. Allocated memory is still 102.8 MB. Free memory was 55.9 MB in the beginning and 54.6 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 289.09 ms. Allocated memory was 102.8 MB in the beginning and 123.7 MB in the end (delta: 21.0 MB). Free memory was 54.6 MB in the beginning and 97.1 MB in the end (delta: -42.5 MB). Peak memory consumption was 27.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3227.12 ms. Allocated memory was 123.7 MB in the beginning and 148.9 MB in the end (delta: 25.2 MB). Free memory was 96.2 MB in the beginning and 47.7 MB in the end (delta: 48.5 MB). Peak memory consumption was 73.3 MB. Max. memory is 16.1 GB. * Witness Printer took 42.94 ms. Allocated memory is still 148.9 MB. Free memory was 47.7 MB in the beginning and 44.5 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 768 VarBasedMoverChecksPositive, 33 VarBasedMoverChecksNegative, 4 SemBasedMoverChecksPositive, 29 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 68 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.9s, 83 PlacesBefore, 32 PlacesAfterwards, 75 TransitionsBefore, 23 TransitionsAfterwards, 1296 CoEnabledTransitionPairs, 6 FixpointIterations, 18 TrivialSequentialCompositions, 34 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 61 TotalNumberOfCompositions, 2563 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, 74 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.1s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: 235 SDtfs, 269 SDslu, 400 SDs, 0 SdLazy, 135 SolverSat, 27 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 50 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred 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, 246 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 117 NumberOfCodeBlocks, 117 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 107 ConstructedInterpolants, 0 QuantifiedInterpolants, 5519 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...