./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe020_pso.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/safe020_pso.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 fa9cb0a5c73e7f443c838278ff3fbfd19a52f78d ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 03:05:50,927 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 03:05:50,930 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 03:05:50,971 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 03:05:50,971 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 03:05:50,979 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 03:05:50,982 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 03:05:50,992 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 03:05:50,995 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 03:05:50,999 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 03:05:51,001 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 03:05:51,002 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 03:05:51,003 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 03:05:51,006 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 03:05:51,008 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 03:05:51,010 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 03:05:51,011 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 03:05:51,012 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 03:05:51,015 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 03:05:51,023 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 03:05:51,025 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 03:05:51,026 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 03:05:51,028 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 03:05:51,029 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 03:05:51,043 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 03:05:51,043 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 03:05:51,044 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 03:05:51,044 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 03:05:51,045 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 03:05:51,051 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 03:05:51,052 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 03:05:51,052 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 03:05:51,053 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 03:05:51,054 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 03:05:51,055 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 03:05:51,055 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 03:05:51,056 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 03:05:51,056 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 03:05:51,056 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 03:05:51,057 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 03:05:51,060 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 03:05:51,061 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 03:05:51,106 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 03:05:51,106 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 03:05:51,107 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 03:05:51,108 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 03:05:51,111 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 03:05:51,111 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 03:05:51,111 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 03:05:51,111 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 03:05:51,112 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 03:05:51,112 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 03:05:51,112 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 03:05:51,112 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 03:05:51,112 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 03:05:51,113 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 03:05:51,113 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 03:05:51,114 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 03:05:51,114 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 03:05:51,115 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 03:05:51,115 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 03:05:51,115 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 03:05:51,115 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 03:05:51,115 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 03:05:51,116 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 03:05:51,116 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 03:05:51,116 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 03:05:51,117 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 03:05:51,117 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 03:05:51,117 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 03:05:51,117 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 03:05:51,117 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 -> fa9cb0a5c73e7f443c838278ff3fbfd19a52f78d [2020-10-20 03:05:51,353 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 03:05:51,373 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 03:05:51,378 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 03:05:51,380 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 03:05:51,380 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 03:05:51,381 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe020_pso.oepc.i [2020-10-20 03:05:51,436 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a10a740cd/678daae7fc74445ab78d61718dddee90/FLAGb424d7661 [2020-10-20 03:05:52,028 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 03:05:52,031 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe020_pso.oepc.i [2020-10-20 03:05:52,046 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a10a740cd/678daae7fc74445ab78d61718dddee90/FLAGb424d7661 [2020-10-20 03:05:52,283 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a10a740cd/678daae7fc74445ab78d61718dddee90 [2020-10-20 03:05:52,287 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 03:05:52,293 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 03:05:52,294 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 03:05:52,295 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 03:05:52,298 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 03:05:52,299 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 03:05:52" (1/1) ... [2020-10-20 03:05:52,304 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75869c02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:05:52, skipping insertion in model container [2020-10-20 03:05:52,304 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 03:05:52" (1/1) ... [2020-10-20 03:05:52,312 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 03:05:52,360 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 03:05:52,767 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 03:05:52,778 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 03:05:52,828 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 03:05:52,924 INFO L208 MainTranslator]: Completed translation [2020-10-20 03:05:52,925 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:05:52 WrapperNode [2020-10-20 03:05:52,925 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 03:05:52,926 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 03:05:52,926 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 03:05:52,927 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 03:05:52,936 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:05:52" (1/1) ... [2020-10-20 03:05:52,976 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:05:52" (1/1) ... [2020-10-20 03:05:53,009 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 03:05:53,009 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 03:05:53,009 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 03:05:53,009 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 03:05:53,019 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:05:52" (1/1) ... [2020-10-20 03:05:53,019 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:05:52" (1/1) ... [2020-10-20 03:05:53,031 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:05:52" (1/1) ... [2020-10-20 03:05:53,032 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:05:52" (1/1) ... [2020-10-20 03:05:53,050 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:05:52" (1/1) ... [2020-10-20 03:05:53,052 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:05:52" (1/1) ... [2020-10-20 03:05:53,054 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:05:52" (1/1) ... [2020-10-20 03:05:53,063 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 03:05:53,066 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 03:05:53,066 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 03:05:53,066 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 03:05:53,070 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:05:52" (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 03:05:53,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 03:05:53,143 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-20 03:05:53,143 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 03:05:53,143 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 03:05:53,144 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-20 03:05:53,144 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-20 03:05:53,144 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-20 03:05:53,154 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-20 03:05:53,154 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-20 03:05:53,155 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-20 03:05:53,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 03:05:53,155 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-20 03:05:53,155 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 03:05:53,155 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 03:05:53,157 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 03:05:53,577 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 03:05:53,578 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-10-20 03:05:53,580 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 03:05:53 BoogieIcfgContainer [2020-10-20 03:05:53,580 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 03:05:53,590 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 03:05:53,591 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 03:05:53,595 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 03:05:53,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 03:05:52" (1/3) ... [2020-10-20 03:05:53,597 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@128af9f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 03:05:53, skipping insertion in model container [2020-10-20 03:05:53,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:05:52" (2/3) ... [2020-10-20 03:05:53,598 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@128af9f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 03:05:53, skipping insertion in model container [2020-10-20 03:05:53,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 03:05:53" (3/3) ... [2020-10-20 03:05:53,600 INFO L111 eAbstractionObserver]: Analyzing ICFG safe020_pso.oepc.i [2020-10-20 03:05:53,610 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-20 03:05:53,610 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 03:05:53,617 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 03:05:53,618 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-20 03:05:53,645 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:53,645 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:53,646 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:53,646 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:53,647 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:53,647 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:53,647 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:53,648 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:53,648 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:53,648 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:53,648 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:53,649 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:53,649 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:53,649 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:53,649 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:53,650 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:53,650 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:53,650 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:53,654 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:53,654 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:53,654 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:53,655 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:53,660 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:53,660 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:53,660 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:53,660 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:53,662 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:53,663 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:53,663 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:53,663 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:53,665 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-20 03:05:53,680 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-20 03:05:53,702 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 03:05:53,702 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 03:05:53,703 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 03:05:53,703 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 03:05:53,703 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 03:05:53,703 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 03:05:53,703 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 03:05:53,703 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 03:05:53,716 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-20 03:05:53,719 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 84 places, 77 transitions, 169 flow [2020-10-20 03:05:53,721 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 84 places, 77 transitions, 169 flow [2020-10-20 03:05:53,722 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 84 places, 77 transitions, 169 flow [2020-10-20 03:05:53,767 INFO L129 PetriNetUnfolder]: 3/74 cut-off events. [2020-10-20 03:05:53,768 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-20 03:05:53,777 INFO L80 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 74 events. 3/74 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 57 event pairs, 0 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 59. Up to 2 conditions per place. [2020-10-20 03:05:53,780 INFO L117 LiptonReduction]: Number of co-enabled transitions 1348 [2020-10-20 03:05:55,512 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2020-10-20 03:05:55,990 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 70 [2020-10-20 03:05:56,365 INFO L132 LiptonReduction]: Checked pairs total: 3056 [2020-10-20 03:05:56,365 INFO L134 LiptonReduction]: Total number of compositions: 75 [2020-10-20 03:05:56,372 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 21 transitions, 57 flow [2020-10-20 03:05:56,395 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 226 states. [2020-10-20 03:05:56,398 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states. [2020-10-20 03:05:56,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-20 03:05:56,405 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:05:56,406 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:05:56,406 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:05:56,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:05:56,412 INFO L82 PathProgramCache]: Analyzing trace with hash 1972841711, now seen corresponding path program 1 times [2020-10-20 03:05:56,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:05:56,434 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228186974] [2020-10-20 03:05:56,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:05:56,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:05:56,677 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 03:05:56,678 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228186974] [2020-10-20 03:05:56,679 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:05:56,679 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-20 03:05:56,680 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250797276] [2020-10-20 03:05:56,685 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 03:05:56,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:05:56,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 03:05:56,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 03:05:56,703 INFO L87 Difference]: Start difference. First operand 226 states. Second operand 3 states. [2020-10-20 03:05:56,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:05:56,749 INFO L93 Difference]: Finished difference Result 220 states and 612 transitions. [2020-10-20 03:05:56,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 03:05:56,753 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-20 03:05:56,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:05:56,770 INFO L225 Difference]: With dead ends: 220 [2020-10-20 03:05:56,770 INFO L226 Difference]: Without dead ends: 172 [2020-10-20 03:05:56,771 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 03:05:56,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-10-20 03:05:56,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2020-10-20 03:05:56,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-10-20 03:05:56,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 460 transitions. [2020-10-20 03:05:56,843 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 460 transitions. Word has length 8 [2020-10-20 03:05:56,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:05:56,844 INFO L481 AbstractCegarLoop]: Abstraction has 172 states and 460 transitions. [2020-10-20 03:05:56,845 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 03:05:56,845 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 460 transitions. [2020-10-20 03:05:56,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-20 03:05:56,846 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:05:56,846 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:05:56,847 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 03:05:56,847 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:05:56,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:05:56,847 INFO L82 PathProgramCache]: Analyzing trace with hash 1028549814, now seen corresponding path program 1 times [2020-10-20 03:05:56,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:05:56,848 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654492144] [2020-10-20 03:05:56,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:05:56,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:05:56,943 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 03:05:56,944 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654492144] [2020-10-20 03:05:56,944 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:05:56,944 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-20 03:05:56,945 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925421410] [2020-10-20 03:05:56,946 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 03:05:56,947 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:05:56,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 03:05:56,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 03:05:56,947 INFO L87 Difference]: Start difference. First operand 172 states and 460 transitions. Second operand 3 states. [2020-10-20 03:05:56,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:05:56,957 INFO L93 Difference]: Finished difference Result 163 states and 430 transitions. [2020-10-20 03:05:56,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 03:05:56,957 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-20 03:05:56,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:05:56,960 INFO L225 Difference]: With dead ends: 163 [2020-10-20 03:05:56,960 INFO L226 Difference]: Without dead ends: 163 [2020-10-20 03:05:56,961 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 03:05:56,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-10-20 03:05:56,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2020-10-20 03:05:56,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-20 03:05:56,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 430 transitions. [2020-10-20 03:05:56,982 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 430 transitions. Word has length 9 [2020-10-20 03:05:56,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:05:56,982 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 430 transitions. [2020-10-20 03:05:56,982 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 03:05:56,983 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 430 transitions. [2020-10-20 03:05:56,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-20 03:05:56,984 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:05:56,984 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:05:56,984 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 03:05:56,985 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:05:56,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:05:56,985 INFO L82 PathProgramCache]: Analyzing trace with hash 1819291053, now seen corresponding path program 1 times [2020-10-20 03:05:56,985 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:05:56,986 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884519191] [2020-10-20 03:05:56,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:05:57,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:05:57,031 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 03:05:57,032 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884519191] [2020-10-20 03:05:57,032 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:05:57,032 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 03:05:57,033 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129581015] [2020-10-20 03:05:57,033 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 03:05:57,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:05:57,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 03:05:57,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 03:05:57,034 INFO L87 Difference]: Start difference. First operand 163 states and 430 transitions. Second operand 3 states. [2020-10-20 03:05:57,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:05:57,049 INFO L93 Difference]: Finished difference Result 211 states and 528 transitions. [2020-10-20 03:05:57,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 03:05:57,050 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-20 03:05:57,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:05:57,052 INFO L225 Difference]: With dead ends: 211 [2020-10-20 03:05:57,052 INFO L226 Difference]: Without dead ends: 175 [2020-10-20 03:05:57,053 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 03:05:57,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-10-20 03:05:57,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 157. [2020-10-20 03:05:57,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-10-20 03:05:57,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 393 transitions. [2020-10-20 03:05:57,072 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 393 transitions. Word has length 10 [2020-10-20 03:05:57,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:05:57,072 INFO L481 AbstractCegarLoop]: Abstraction has 157 states and 393 transitions. [2020-10-20 03:05:57,072 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 03:05:57,072 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 393 transitions. [2020-10-20 03:05:57,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-20 03:05:57,074 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:05:57,074 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:05:57,074 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-20 03:05:57,075 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:05:57,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:05:57,075 INFO L82 PathProgramCache]: Analyzing trace with hash 1819353363, now seen corresponding path program 1 times [2020-10-20 03:05:57,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:05:57,076 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665655576] [2020-10-20 03:05:57,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:05:57,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:05:57,150 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 03:05:57,150 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665655576] [2020-10-20 03:05:57,150 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:05:57,150 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 03:05:57,170 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626351694] [2020-10-20 03:05:57,171 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 03:05:57,171 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:05:57,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 03:05:57,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 03:05:57,172 INFO L87 Difference]: Start difference. First operand 157 states and 393 transitions. Second operand 4 states. [2020-10-20 03:05:57,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:05:57,199 INFO L93 Difference]: Finished difference Result 196 states and 467 transitions. [2020-10-20 03:05:57,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 03:05:57,200 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-20 03:05:57,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:05:57,202 INFO L225 Difference]: With dead ends: 196 [2020-10-20 03:05:57,202 INFO L226 Difference]: Without dead ends: 124 [2020-10-20 03:05:57,202 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 03:05:57,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-10-20 03:05:57,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2020-10-20 03:05:57,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-10-20 03:05:57,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 291 transitions. [2020-10-20 03:05:57,214 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 291 transitions. Word has length 10 [2020-10-20 03:05:57,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:05:57,214 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 291 transitions. [2020-10-20 03:05:57,214 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 03:05:57,215 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 291 transitions. [2020-10-20 03:05:57,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-20 03:05:57,216 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:05:57,216 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:05:57,217 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-20 03:05:57,217 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:05:57,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:05:57,217 INFO L82 PathProgramCache]: Analyzing trace with hash -1404816041, now seen corresponding path program 1 times [2020-10-20 03:05:57,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:05:57,218 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450674730] [2020-10-20 03:05:57,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:05:57,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:05:57,340 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 03:05:57,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450674730] [2020-10-20 03:05:57,341 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:05:57,341 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 03:05:57,341 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029745293] [2020-10-20 03:05:57,342 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 03:05:57,342 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:05:57,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 03:05:57,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 03:05:57,343 INFO L87 Difference]: Start difference. First operand 124 states and 291 transitions. Second operand 4 states. [2020-10-20 03:05:57,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:05:57,378 INFO L93 Difference]: Finished difference Result 144 states and 309 transitions. [2020-10-20 03:05:57,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 03:05:57,379 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-20 03:05:57,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:05:57,380 INFO L225 Difference]: With dead ends: 144 [2020-10-20 03:05:57,380 INFO L226 Difference]: Without dead ends: 108 [2020-10-20 03:05:57,381 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 03:05:57,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-20 03:05:57,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2020-10-20 03:05:57,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-10-20 03:05:57,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 232 transitions. [2020-10-20 03:05:57,397 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 232 transitions. Word has length 11 [2020-10-20 03:05:57,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:05:57,397 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 232 transitions. [2020-10-20 03:05:57,397 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 03:05:57,397 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 232 transitions. [2020-10-20 03:05:57,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-20 03:05:57,405 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:05:57,405 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:05:57,406 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-20 03:05:57,406 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:05:57,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:05:57,407 INFO L82 PathProgramCache]: Analyzing trace with hash 693308811, now seen corresponding path program 1 times [2020-10-20 03:05:57,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:05:57,408 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291408859] [2020-10-20 03:05:57,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:05:57,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:05:57,538 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 03:05:57,539 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291408859] [2020-10-20 03:05:57,539 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:05:57,539 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 03:05:57,539 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187143749] [2020-10-20 03:05:57,540 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 03:05:57,540 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:05:57,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 03:05:57,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-20 03:05:57,541 INFO L87 Difference]: Start difference. First operand 108 states and 232 transitions. Second operand 5 states. [2020-10-20 03:05:57,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:05:57,594 INFO L93 Difference]: Finished difference Result 108 states and 214 transitions. [2020-10-20 03:05:57,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 03:05:57,594 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-10-20 03:05:57,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:05:57,595 INFO L225 Difference]: With dead ends: 108 [2020-10-20 03:05:57,595 INFO L226 Difference]: Without dead ends: 84 [2020-10-20 03:05:57,596 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 03:05:57,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-20 03:05:57,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2020-10-20 03:05:57,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-10-20 03:05:57,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 164 transitions. [2020-10-20 03:05:57,609 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 164 transitions. Word has length 12 [2020-10-20 03:05:57,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:05:57,611 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 164 transitions. [2020-10-20 03:05:57,612 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 03:05:57,612 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 164 transitions. [2020-10-20 03:05:57,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-20 03:05:57,613 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:05:57,614 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:05:57,614 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-20 03:05:57,615 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:05:57,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:05:57,615 INFO L82 PathProgramCache]: Analyzing trace with hash 489181955, now seen corresponding path program 1 times [2020-10-20 03:05:57,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:05:57,617 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56483678] [2020-10-20 03:05:57,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:05:57,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:05:57,799 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 03:05:57,799 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56483678] [2020-10-20 03:05:57,799 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:05:57,800 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 03:05:57,800 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234465002] [2020-10-20 03:05:57,800 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 03:05:57,800 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:05:57,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 03:05:57,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-20 03:05:57,801 INFO L87 Difference]: Start difference. First operand 84 states and 164 transitions. Second operand 6 states. [2020-10-20 03:05:57,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:05:57,869 INFO L93 Difference]: Finished difference Result 80 states and 154 transitions. [2020-10-20 03:05:57,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 03:05:57,869 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-10-20 03:05:57,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:05:57,870 INFO L225 Difference]: With dead ends: 80 [2020-10-20 03:05:57,870 INFO L226 Difference]: Without dead ends: 33 [2020-10-20 03:05:57,871 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 03:05:57,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-20 03:05:57,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-10-20 03:05:57,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-20 03:05:57,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 51 transitions. [2020-10-20 03:05:57,873 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 51 transitions. Word has length 14 [2020-10-20 03:05:57,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:05:57,873 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 51 transitions. [2020-10-20 03:05:57,873 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 03:05:57,873 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 51 transitions. [2020-10-20 03:05:57,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-20 03:05:57,874 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:05:57,874 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:05:57,874 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-20 03:05:57,874 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:05:57,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:05:57,875 INFO L82 PathProgramCache]: Analyzing trace with hash 1917932335, now seen corresponding path program 1 times [2020-10-20 03:05:57,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:05:57,875 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732001138] [2020-10-20 03:05:57,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:05:57,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:05:57,910 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 03:05:57,910 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732001138] [2020-10-20 03:05:57,910 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:05:57,911 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 03:05:57,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536177553] [2020-10-20 03:05:57,911 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 03:05:57,911 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:05:57,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 03:05:57,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 03:05:57,912 INFO L87 Difference]: Start difference. First operand 33 states and 51 transitions. Second operand 4 states. [2020-10-20 03:05:57,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:05:57,925 INFO L93 Difference]: Finished difference Result 32 states and 50 transitions. [2020-10-20 03:05:57,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 03:05:57,925 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-10-20 03:05:57,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:05:57,925 INFO L225 Difference]: With dead ends: 32 [2020-10-20 03:05:57,925 INFO L226 Difference]: Without dead ends: 0 [2020-10-20 03:05:57,926 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 [2020-10-20 03:05:57,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-20 03:05:57,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-20 03:05:57,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-20 03:05:57,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-20 03:05:57,927 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-10-20 03:05:57,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:05:57,927 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 03:05:57,927 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 03:05:57,927 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-20 03:05:57,927 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-20 03:05:57,928 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-20 03:05:57,931 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 03:05:57 BasicIcfg [2020-10-20 03:05:57,932 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 03:05:57,932 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 03:05:57,932 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 03:05:57,932 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 03:05:57,933 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 03:05:53" (3/4) ... [2020-10-20 03:05:57,937 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-20 03:05:57,945 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-10-20 03:05:57,945 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-10-20 03:05:57,946 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-10-20 03:05:57,951 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-10-20 03:05:57,951 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-10-20 03:05:57,951 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 03:05:57,951 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 03:05:58,004 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 03:05:58,005 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 03:05:58,007 INFO L168 Benchmark]: Toolchain (without parser) took 5717.96 ms. Allocated memory was 36.2 MB in the beginning and 81.3 MB in the end (delta: 45.1 MB). Free memory was 12.0 MB in the beginning and 33.6 MB in the end (delta: -21.6 MB). Peak memory consumption was 23.5 MB. Max. memory is 14.3 GB. [2020-10-20 03:05:58,007 INFO L168 Benchmark]: CDTParser took 0.80 ms. Allocated memory is still 34.1 MB. Free memory was 19.3 MB in the beginning and 19.2 MB in the end (delta: 29.8 kB). Peak memory consumption was 29.8 kB. Max. memory is 14.3 GB. [2020-10-20 03:05:58,008 INFO L168 Benchmark]: CACSL2BoogieTranslator took 631.00 ms. Allocated memory was 36.2 MB in the beginning and 44.6 MB in the end (delta: 8.4 MB). Free memory was 11.2 MB in the beginning and 18.8 MB in the end (delta: -7.6 MB). Peak memory consumption was 11.1 MB. Max. memory is 14.3 GB. [2020-10-20 03:05:58,009 INFO L168 Benchmark]: Boogie Procedure Inliner took 83.18 ms. Allocated memory is still 44.6 MB. Free memory was 18.5 MB in the beginning and 16.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 14.3 GB. [2020-10-20 03:05:58,009 INFO L168 Benchmark]: Boogie Preprocessor took 54.36 ms. Allocated memory is still 44.6 MB. Free memory was 16.5 MB in the beginning and 14.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. [2020-10-20 03:05:58,010 INFO L168 Benchmark]: RCFGBuilder took 514.11 ms. Allocated memory was 44.6 MB in the beginning and 47.7 MB in the end (delta: 3.1 MB). Free memory was 14.8 MB in the beginning and 10.8 MB in the end (delta: 4.0 MB). Peak memory consumption was 7.2 MB. Max. memory is 14.3 GB. [2020-10-20 03:05:58,011 INFO L168 Benchmark]: TraceAbstraction took 4341.24 ms. Allocated memory was 47.7 MB in the beginning and 81.3 MB in the end (delta: 33.6 MB). Free memory was 29.6 MB in the beginning and 37.3 MB in the end (delta: -7.7 MB). Peak memory consumption was 25.9 MB. Max. memory is 14.3 GB. [2020-10-20 03:05:58,011 INFO L168 Benchmark]: Witness Printer took 72.71 ms. Allocated memory is still 81.3 MB. Free memory was 37.3 MB in the beginning and 33.6 MB in the end (delta: 3.6 MB). Peak memory consumption was 3.6 MB. Max. memory is 14.3 GB. [2020-10-20 03:05:58,015 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.80 ms. Allocated memory is still 34.1 MB. Free memory was 19.3 MB in the beginning and 19.2 MB in the end (delta: 29.8 kB). Peak memory consumption was 29.8 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 631.00 ms. Allocated memory was 36.2 MB in the beginning and 44.6 MB in the end (delta: 8.4 MB). Free memory was 11.2 MB in the beginning and 18.8 MB in the end (delta: -7.6 MB). Peak memory consumption was 11.1 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 83.18 ms. Allocated memory is still 44.6 MB. Free memory was 18.5 MB in the beginning and 16.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 54.36 ms. Allocated memory is still 44.6 MB. Free memory was 16.5 MB in the beginning and 14.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. * RCFGBuilder took 514.11 ms. Allocated memory was 44.6 MB in the beginning and 47.7 MB in the end (delta: 3.1 MB). Free memory was 14.8 MB in the beginning and 10.8 MB in the end (delta: 4.0 MB). Peak memory consumption was 7.2 MB. Max. memory is 14.3 GB. * TraceAbstraction took 4341.24 ms. Allocated memory was 47.7 MB in the beginning and 81.3 MB in the end (delta: 33.6 MB). Free memory was 29.6 MB in the beginning and 37.3 MB in the end (delta: -7.7 MB). Peak memory consumption was 25.9 MB. Max. memory is 14.3 GB. * Witness Printer took 72.71 ms. Allocated memory is still 81.3 MB. Free memory was 37.3 MB in the beginning and 33.6 MB in the end (delta: 3.6 MB). Peak memory consumption was 3.6 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 936 VarBasedMoverChecksPositive, 44 VarBasedMoverChecksNegative, 8 SemBasedMoverChecksPositive, 36 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 72 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.6s, 84 PlacesBefore, 30 PlacesAfterwards, 77 TransitionsBefore, 21 TransitionsAfterwards, 1348 CoEnabledTransitionPairs, 7 FixpointIterations, 17 TrivialSequentialCompositions, 47 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 2 ChoiceCompositions, 75 TotalNumberOfCompositions, 3056 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, 75 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.2s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.6s, HoareTripleCheckerStatistics: 134 SDtfs, 110 SDslu, 162 SDs, 0 SdLazy, 101 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=226occurred 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, 18 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 90 NumberOfCodeBlocks, 90 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 82 ConstructedInterpolants, 0 QuantifiedInterpolants, 2616 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...