./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe011_tso.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9a8b2e8d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-wmm/safe011_tso.oepc.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 111652fecc1f9904459ad425a5e9e5680d2d8f19 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 03:04:24,883 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 03:04:24,886 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 03:04:24,926 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 03:04:24,927 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 03:04:24,936 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 03:04:24,938 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 03:04:24,942 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 03:04:24,944 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 03:04:24,947 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 03:04:24,949 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 03:04:24,950 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 03:04:24,951 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 03:04:24,954 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 03:04:24,955 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 03:04:24,957 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 03:04:24,959 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 03:04:24,960 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 03:04:24,962 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 03:04:24,969 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 03:04:24,971 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 03:04:24,973 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 03:04:24,975 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 03:04:24,975 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 03:04:24,992 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 03:04:24,993 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 03:04:25,000 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 03:04:25,001 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 03:04:25,002 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 03:04:25,002 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 03:04:25,003 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 03:04:25,003 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 03:04:25,004 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 03:04:25,005 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 03:04:25,008 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 03:04:25,009 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 03:04:25,009 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 03:04:25,010 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 03:04:25,010 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 03:04:25,011 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 03:04:25,012 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 03:04:25,013 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 03:04:25,053 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 03:04:25,053 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 03:04:25,055 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 03:04:25,055 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 03:04:25,055 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 03:04:25,056 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 03:04:25,056 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 03:04:25,056 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 03:04:25,056 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 03:04:25,056 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 03:04:25,057 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 03:04:25,058 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 03:04:25,058 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 03:04:25,058 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 03:04:25,058 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 03:04:25,058 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 03:04:25,059 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 03:04:25,059 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 03:04:25,059 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 03:04:25,060 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 03:04:25,060 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 03:04:25,060 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 03:04:25,060 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 03:04:25,060 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 03:04:25,061 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 03:04:25,061 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 03:04:25,061 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 03:04:25,061 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 03:04:25,061 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 03:04:25,061 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux 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 -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 111652fecc1f9904459ad425a5e9e5680d2d8f19 [2020-10-20 03:04:25,296 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 03:04:25,308 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 03:04:25,312 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 03:04:25,314 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 03:04:25,314 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 03:04:25,315 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe011_tso.oepc.i [2020-10-20 03:04:25,370 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/23de29938/1c3f14fad18d4851b2af732346016086/FLAG46adf0a02 [2020-10-20 03:04:25,887 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 03:04:25,888 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe011_tso.oepc.i [2020-10-20 03:04:25,912 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/23de29938/1c3f14fad18d4851b2af732346016086/FLAG46adf0a02 [2020-10-20 03:04:26,205 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/23de29938/1c3f14fad18d4851b2af732346016086 [2020-10-20 03:04:26,208 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 03:04:26,215 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 03:04:26,216 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 03:04:26,216 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 03:04:26,220 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 03:04:26,221 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 03:04:26" (1/1) ... [2020-10-20 03:04:26,226 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6743b27d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:04:26, skipping insertion in model container [2020-10-20 03:04:26,226 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 03:04:26" (1/1) ... [2020-10-20 03:04:26,234 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 03:04:26,294 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 03:04:26,786 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 03:04:26,797 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 03:04:26,852 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 03:04:26,937 INFO L208 MainTranslator]: Completed translation [2020-10-20 03:04:26,938 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:04:26 WrapperNode [2020-10-20 03:04:26,938 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 03:04:26,939 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 03:04:26,939 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 03:04:26,940 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 03:04:26,948 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:04:26" (1/1) ... [2020-10-20 03:04:26,965 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:04:26" (1/1) ... [2020-10-20 03:04:26,985 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 03:04:26,986 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 03:04:26,986 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 03:04:26,987 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 03:04:26,996 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:04:26" (1/1) ... [2020-10-20 03:04:26,997 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:04:26" (1/1) ... [2020-10-20 03:04:27,000 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:04:26" (1/1) ... [2020-10-20 03:04:27,001 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:04:26" (1/1) ... [2020-10-20 03:04:27,008 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:04:26" (1/1) ... [2020-10-20 03:04:27,011 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:04:26" (1/1) ... [2020-10-20 03:04:27,013 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:04:26" (1/1) ... [2020-10-20 03:04:27,016 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 03:04:27,017 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 03:04:27,017 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 03:04:27,018 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 03:04:27,018 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:04:26" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-20 03:04:27,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 03:04:27,114 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-20 03:04:27,114 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 03:04:27,115 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 03:04:27,115 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-20 03:04:27,116 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-20 03:04:27,116 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-20 03:04:27,116 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-20 03:04:27,116 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-20 03:04:27,116 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-20 03:04:27,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 03:04:27,116 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-20 03:04:27,117 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 03:04:27,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 03:04:27,118 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-20 03:04:27,556 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 03:04:27,556 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-10-20 03:04:27,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 03:04:27 BoogieIcfgContainer [2020-10-20 03:04:27,558 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 03:04:27,560 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 03:04:27,560 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 03:04:27,563 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 03:04:27,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 03:04:26" (1/3) ... [2020-10-20 03:04:27,565 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bd453b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 03:04:27, skipping insertion in model container [2020-10-20 03:04:27,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:04:26" (2/3) ... [2020-10-20 03:04:27,565 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bd453b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 03:04:27, skipping insertion in model container [2020-10-20 03:04:27,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 03:04:27" (3/3) ... [2020-10-20 03:04:27,567 INFO L111 eAbstractionObserver]: Analyzing ICFG safe011_tso.oepc.i [2020-10-20 03:04:27,579 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-20 03:04:27,579 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 03:04:27,586 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 03:04:27,586 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-20 03:04:27,613 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:27,614 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:27,614 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:27,614 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:27,615 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:27,615 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:27,615 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:27,616 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:27,616 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:27,616 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:27,616 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:27,616 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:27,617 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:27,617 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:27,617 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:27,617 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:27,618 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:27,618 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:27,622 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:27,622 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:27,623 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:27,623 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:27,628 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:27,628 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:27,629 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:27,629 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:27,630 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:27,631 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:27,631 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:27,631 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:27,633 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-20 03:04:27,645 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-20 03:04:27,662 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 03:04:27,662 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 03:04:27,663 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 03:04:27,663 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 03:04:27,663 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 03:04:27,663 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 03:04:27,663 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 03:04:27,663 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 03:04:27,677 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-20 03:04:27,680 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 85 places, 78 transitions, 171 flow [2020-10-20 03:04:27,682 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 85 places, 78 transitions, 171 flow [2020-10-20 03:04:27,684 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 85 places, 78 transitions, 171 flow [2020-10-20 03:04:27,764 INFO L129 PetriNetUnfolder]: 3/75 cut-off events. [2020-10-20 03:04:27,765 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-20 03:04:27,770 INFO L80 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 75 events. 3/75 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 65 event pairs, 0 based on Foata normal form. 0/71 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2020-10-20 03:04:27,774 INFO L117 LiptonReduction]: Number of co-enabled transitions 1440 [2020-10-20 03:04:29,610 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-10-20 03:04:29,949 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2020-10-20 03:04:30,195 INFO L132 LiptonReduction]: Checked pairs total: 3321 [2020-10-20 03:04:30,195 INFO L134 LiptonReduction]: Total number of compositions: 75 [2020-10-20 03:04:30,202 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-10-20 03:04:30,229 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-10-20 03:04:30,232 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-10-20 03:04:30,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-20 03:04:30,240 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:04:30,241 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:04:30,242 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:04:30,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:04:30,248 INFO L82 PathProgramCache]: Analyzing trace with hash 1248499387, now seen corresponding path program 1 times [2020-10-20 03:04:30,258 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:04:30,258 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51899515] [2020-10-20 03:04:30,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:04:30,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:04:30,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 03:04:30,503 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51899515] [2020-10-20 03:04:30,504 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:04:30,505 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-20 03:04:30,505 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829443737] [2020-10-20 03:04:30,510 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 03:04:30,510 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:04:30,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 03:04:30,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 03:04:30,527 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-10-20 03:04:30,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:04:30,595 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-10-20 03:04:30,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 03:04:30,597 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-20 03:04:30,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:04:30,625 INFO L225 Difference]: With dead ends: 282 [2020-10-20 03:04:30,625 INFO L226 Difference]: Without dead ends: 218 [2020-10-20 03:04:30,627 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 [2020-10-20 03:04:30,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-10-20 03:04:30,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-10-20 03:04:30,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-10-20 03:04:30,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-10-20 03:04:30,716 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-10-20 03:04:30,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:04:30,718 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-10-20 03:04:30,718 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 03:04:30,718 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-10-20 03:04:30,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-20 03:04:30,719 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:04:30,720 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:04:30,720 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 03:04:30,720 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:04:30,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:04:30,721 INFO L82 PathProgramCache]: Analyzing trace with hash 48774317, now seen corresponding path program 1 times [2020-10-20 03:04:30,721 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:04:30,721 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017820353] [2020-10-20 03:04:30,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:04:30,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:04:30,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 03:04:30,797 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017820353] [2020-10-20 03:04:30,797 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:04:30,797 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 03:04:30,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282111556] [2020-10-20 03:04:30,799 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 03:04:30,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:04:30,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 03:04:30,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 03:04:30,815 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 4 states. [2020-10-20 03:04:30,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:04:30,843 INFO L93 Difference]: Finished difference Result 242 states and 634 transitions. [2020-10-20 03:04:30,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 03:04:30,844 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-20 03:04:30,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:04:30,846 INFO L225 Difference]: With dead ends: 242 [2020-10-20 03:04:30,846 INFO L226 Difference]: Without dead ends: 146 [2020-10-20 03:04:30,847 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 [2020-10-20 03:04:30,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-10-20 03:04:30,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-10-20 03:04:30,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-20 03:04:30,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 362 transitions. [2020-10-20 03:04:30,861 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 362 transitions. Word has length 9 [2020-10-20 03:04:30,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:04:30,862 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 362 transitions. [2020-10-20 03:04:30,862 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 03:04:30,862 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 362 transitions. [2020-10-20 03:04:30,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-20 03:04:30,864 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:04:30,864 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:04:30,864 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 03:04:30,864 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:04:30,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:04:30,865 INFO L82 PathProgramCache]: Analyzing trace with hash -604430829, now seen corresponding path program 1 times [2020-10-20 03:04:30,865 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:04:30,865 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966391400] [2020-10-20 03:04:30,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:04:30,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:04:30,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 03:04:30,928 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966391400] [2020-10-20 03:04:30,929 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:04:30,929 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-20 03:04:30,929 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877037659] [2020-10-20 03:04:30,930 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 03:04:30,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:04:30,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 03:04:30,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 03:04:30,931 INFO L87 Difference]: Start difference. First operand 146 states and 362 transitions. Second operand 3 states. [2020-10-20 03:04:30,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:04:30,940 INFO L93 Difference]: Finished difference Result 144 states and 355 transitions. [2020-10-20 03:04:30,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 03:04:30,941 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-10-20 03:04:30,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:04:30,943 INFO L225 Difference]: With dead ends: 144 [2020-10-20 03:04:30,943 INFO L226 Difference]: Without dead ends: 144 [2020-10-20 03:04:30,944 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 [2020-10-20 03:04:30,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-10-20 03:04:30,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2020-10-20 03:04:30,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-20 03:04:30,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 355 transitions. [2020-10-20 03:04:30,957 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 355 transitions. Word has length 11 [2020-10-20 03:04:30,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:04:30,958 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 355 transitions. [2020-10-20 03:04:30,958 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 03:04:30,958 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 355 transitions. [2020-10-20 03:04:30,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-20 03:04:30,960 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:04:30,960 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:04:30,960 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-20 03:04:30,960 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:04:30,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:04:30,961 INFO L82 PathProgramCache]: Analyzing trace with hash 1306895020, now seen corresponding path program 1 times [2020-10-20 03:04:30,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:04:30,962 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460298551] [2020-10-20 03:04:30,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:04:30,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:04:31,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 03:04:31,060 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460298551] [2020-10-20 03:04:31,060 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:04:31,060 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 03:04:31,060 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709413641] [2020-10-20 03:04:31,061 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 03:04:31,061 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:04:31,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 03:04:31,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 03:04:31,062 INFO L87 Difference]: Start difference. First operand 144 states and 355 transitions. Second operand 4 states. [2020-10-20 03:04:31,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:04:31,109 INFO L93 Difference]: Finished difference Result 164 states and 374 transitions. [2020-10-20 03:04:31,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 03:04:31,109 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-20 03:04:31,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:04:31,111 INFO L225 Difference]: With dead ends: 164 [2020-10-20 03:04:31,111 INFO L226 Difference]: Without dead ends: 124 [2020-10-20 03:04:31,112 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 [2020-10-20 03:04:31,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-10-20 03:04:31,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2020-10-20 03:04:31,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-10-20 03:04:31,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 281 transitions. [2020-10-20 03:04:31,121 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 281 transitions. Word has length 12 [2020-10-20 03:04:31,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:04:31,122 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 281 transitions. [2020-10-20 03:04:31,122 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 03:04:31,122 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 281 transitions. [2020-10-20 03:04:31,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-20 03:04:31,123 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:04:31,124 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:04:31,124 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-20 03:04:31,124 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:04:31,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:04:31,124 INFO L82 PathProgramCache]: Analyzing trace with hash 1812224197, now seen corresponding path program 1 times [2020-10-20 03:04:31,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:04:31,125 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000672472] [2020-10-20 03:04:31,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:04:31,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:04:31,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 03:04:31,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000672472] [2020-10-20 03:04:31,213 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:04:31,213 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 03:04:31,213 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622702761] [2020-10-20 03:04:31,214 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 03:04:31,214 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:04:31,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 03:04:31,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-20 03:04:31,217 INFO L87 Difference]: Start difference. First operand 124 states and 281 transitions. Second operand 5 states. [2020-10-20 03:04:31,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:04:31,282 INFO L93 Difference]: Finished difference Result 122 states and 258 transitions. [2020-10-20 03:04:31,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 03:04:31,296 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-20 03:04:31,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:04:31,298 INFO L225 Difference]: With dead ends: 122 [2020-10-20 03:04:31,298 INFO L226 Difference]: Without dead ends: 97 [2020-10-20 03:04:31,298 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 [2020-10-20 03:04:31,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-10-20 03:04:31,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2020-10-20 03:04:31,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-20 03:04:31,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 202 transitions. [2020-10-20 03:04:31,305 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 202 transitions. Word has length 13 [2020-10-20 03:04:31,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:04:31,306 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 202 transitions. [2020-10-20 03:04:31,306 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 03:04:31,306 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 202 transitions. [2020-10-20 03:04:31,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-20 03:04:31,307 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:04:31,308 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:04:31,308 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-20 03:04:31,308 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:04:31,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:04:31,309 INFO L82 PathProgramCache]: Analyzing trace with hash 111718158, now seen corresponding path program 1 times [2020-10-20 03:04:31,309 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:04:31,309 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744666150] [2020-10-20 03:04:31,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:04:31,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:04:31,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 03:04:31,345 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744666150] [2020-10-20 03:04:31,345 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:04:31,345 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 03:04:31,345 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305891915] [2020-10-20 03:04:31,346 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 03:04:31,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:04:31,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 03:04:31,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 03:04:31,347 INFO L87 Difference]: Start difference. First operand 97 states and 202 transitions. Second operand 3 states. [2020-10-20 03:04:31,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:04:31,359 INFO L93 Difference]: Finished difference Result 115 states and 230 transitions. [2020-10-20 03:04:31,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 03:04:31,359 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-10-20 03:04:31,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:04:31,360 INFO L225 Difference]: With dead ends: 115 [2020-10-20 03:04:31,360 INFO L226 Difference]: Without dead ends: 98 [2020-10-20 03:04:31,361 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 03:04:31,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-20 03:04:31,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 96. [2020-10-20 03:04:31,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-20 03:04:31,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 193 transitions. [2020-10-20 03:04:31,366 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 193 transitions. Word has length 14 [2020-10-20 03:04:31,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:04:31,367 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 193 transitions. [2020-10-20 03:04:31,367 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 03:04:31,367 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 193 transitions. [2020-10-20 03:04:31,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-20 03:04:31,368 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:04:31,368 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:04:31,369 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-20 03:04:31,369 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:04:31,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:04:31,369 INFO L82 PathProgramCache]: Analyzing trace with hash 567564355, now seen corresponding path program 1 times [2020-10-20 03:04:31,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:04:31,370 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386702118] [2020-10-20 03:04:31,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:04:31,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:04:31,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 03:04:31,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386702118] [2020-10-20 03:04:31,430 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:04:31,430 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 03:04:31,430 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724643192] [2020-10-20 03:04:31,431 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 03:04:31,431 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:04:31,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 03:04:31,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-20 03:04:31,431 INFO L87 Difference]: Start difference. First operand 96 states and 193 transitions. Second operand 6 states. [2020-10-20 03:04:31,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:04:31,492 INFO L93 Difference]: Finished difference Result 92 states and 183 transitions. [2020-10-20 03:04:31,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 03:04:31,492 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-20 03:04:31,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:04:31,493 INFO L225 Difference]: With dead ends: 92 [2020-10-20 03:04:31,493 INFO L226 Difference]: Without dead ends: 36 [2020-10-20 03:04:31,494 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 [2020-10-20 03:04:31,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-20 03:04:31,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-10-20 03:04:31,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-20 03:04:31,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 56 transitions. [2020-10-20 03:04:31,497 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 56 transitions. Word has length 15 [2020-10-20 03:04:31,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:04:31,498 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 56 transitions. [2020-10-20 03:04:31,498 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 03:04:31,498 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 56 transitions. [2020-10-20 03:04:31,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-20 03:04:31,499 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:04:31,499 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:04:31,499 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-20 03:04:31,500 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:04:31,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:04:31,500 INFO L82 PathProgramCache]: Analyzing trace with hash -170339707, now seen corresponding path program 1 times [2020-10-20 03:04:31,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:04:31,501 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45399085] [2020-10-20 03:04:31,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:04:31,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:04:31,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 03:04:31,535 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45399085] [2020-10-20 03:04:31,535 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:04:31,536 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 03:04:31,536 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482636352] [2020-10-20 03:04:31,536 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 03:04:31,537 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:04:31,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 03:04:31,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 03:04:31,537 INFO L87 Difference]: Start difference. First operand 36 states and 56 transitions. Second operand 3 states. [2020-10-20 03:04:31,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:04:31,543 INFO L93 Difference]: Finished difference Result 35 states and 55 transitions. [2020-10-20 03:04:31,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 03:04:31,544 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-10-20 03:04:31,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:04:31,544 INFO L225 Difference]: With dead ends: 35 [2020-10-20 03:04:31,544 INFO L226 Difference]: Without dead ends: 0 [2020-10-20 03:04:31,544 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 03:04:31,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-20 03:04:31,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-20 03:04:31,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-20 03:04:31,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-20 03:04:31,546 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-10-20 03:04:31,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:04:31,546 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 03:04:31,546 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 03:04:31,546 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-20 03:04:31,546 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-20 03:04:31,547 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-20 03:04:31,551 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 03:04:31 BasicIcfg [2020-10-20 03:04:31,551 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 03:04:31,552 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 03:04:31,552 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 03:04:31,553 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 03:04:31,553 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 03:04:27" (3/4) ... [2020-10-20 03:04:31,558 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-20 03:04:31,566 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-10-20 03:04:31,566 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-10-20 03:04:31,567 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-10-20 03:04:31,572 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-10-20 03:04:31,573 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-10-20 03:04:31,573 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 03:04:31,573 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 03:04:31,619 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 03:04:31,620 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 03:04:31,622 INFO L168 Benchmark]: Toolchain (without parser) took 5412.09 ms. Allocated memory was 36.2 MB in the beginning and 77.1 MB in the end (delta: 40.9 MB). Free memory was 17.7 MB in the beginning and 15.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 43.0 MB. Max. memory is 14.3 GB. [2020-10-20 03:04:31,623 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 34.6 MB. Free memory was 12.9 MB in the beginning and 12.9 MB in the end (delta: 68.3 kB). Peak memory consumption was 68.3 kB. Max. memory is 14.3 GB. [2020-10-20 03:04:31,624 INFO L168 Benchmark]: CACSL2BoogieTranslator took 722.71 ms. Allocated memory was 36.2 MB in the beginning and 45.6 MB in the end (delta: 9.4 MB). Free memory was 16.8 MB in the beginning and 17.3 MB in the end (delta: -580.0 kB). Peak memory consumption was 15.9 MB. Max. memory is 14.3 GB. [2020-10-20 03:04:31,624 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.71 ms. Allocated memory is still 45.6 MB. Free memory was 17.3 MB in the beginning and 15.1 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 14.3 GB. [2020-10-20 03:04:31,625 INFO L168 Benchmark]: Boogie Preprocessor took 30.55 ms. Allocated memory is still 45.6 MB. Free memory was 15.1 MB in the beginning and 13.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. [2020-10-20 03:04:31,626 INFO L168 Benchmark]: RCFGBuilder took 541.55 ms. Allocated memory was 45.6 MB in the beginning and 47.2 MB in the end (delta: 1.6 MB). Free memory was 13.5 MB in the beginning and 22.4 MB in the end (delta: -8.9 MB). Peak memory consumption was 3.4 MB. Max. memory is 14.3 GB. [2020-10-20 03:04:31,627 INFO L168 Benchmark]: TraceAbstraction took 3991.97 ms. Allocated memory was 47.2 MB in the beginning and 77.1 MB in the end (delta: 29.9 MB). Free memory was 22.1 MB in the beginning and 19.3 MB in the end (delta: 2.8 MB). Peak memory consumption was 32.7 MB. Max. memory is 14.3 GB. [2020-10-20 03:04:31,628 INFO L168 Benchmark]: Witness Printer took 67.91 ms. Allocated memory is still 77.1 MB. Free memory was 19.3 MB in the beginning and 15.6 MB in the end (delta: 3.7 MB). Peak memory consumption was 3.7 MB. Max. memory is 14.3 GB. [2020-10-20 03:04:31,632 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 34.6 MB. Free memory was 12.9 MB in the beginning and 12.9 MB in the end (delta: 68.3 kB). Peak memory consumption was 68.3 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 722.71 ms. Allocated memory was 36.2 MB in the beginning and 45.6 MB in the end (delta: 9.4 MB). Free memory was 16.8 MB in the beginning and 17.3 MB in the end (delta: -580.0 kB). Peak memory consumption was 15.9 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 46.71 ms. Allocated memory is still 45.6 MB. Free memory was 17.3 MB in the beginning and 15.1 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 30.55 ms. Allocated memory is still 45.6 MB. Free memory was 15.1 MB in the beginning and 13.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. * RCFGBuilder took 541.55 ms. Allocated memory was 45.6 MB in the beginning and 47.2 MB in the end (delta: 1.6 MB). Free memory was 13.5 MB in the beginning and 22.4 MB in the end (delta: -8.9 MB). Peak memory consumption was 3.4 MB. Max. memory is 14.3 GB. * TraceAbstraction took 3991.97 ms. Allocated memory was 47.2 MB in the beginning and 77.1 MB in the end (delta: 29.9 MB). Free memory was 22.1 MB in the beginning and 19.3 MB in the end (delta: 2.8 MB). Peak memory consumption was 32.7 MB. Max. memory is 14.3 GB. * Witness Printer took 67.91 ms. Allocated memory is still 77.1 MB. Free memory was 19.3 MB in the beginning and 15.6 MB in the end (delta: 3.7 MB). Peak memory consumption was 3.7 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 988 VarBasedMoverChecksPositive, 47 VarBasedMoverChecksNegative, 10 SemBasedMoverChecksPositive, 37 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 78 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.5s, 85 PlacesBefore, 31 PlacesAfterwards, 78 TransitionsBefore, 22 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 7 FixpointIterations, 17 TrivialSequentialCompositions, 46 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 2 ChoiceCompositions, 75 TotalNumberOfCompositions, 3321 MoverChecksTotal - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.8s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.5s, HoareTripleCheckerStatistics: 144 SDtfs, 121 SDslu, 167 SDs, 0 SdLazy, 96 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 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, 8 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 99 NumberOfCodeBlocks, 99 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 91 ConstructedInterpolants, 0 QuantifiedInterpolants, 2883 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...