./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe017_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/safe017_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 9900832e3eb275a51766e54e18663ea088e173f4 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 03:05:27,789 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 03:05:27,792 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 03:05:27,815 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 03:05:27,815 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 03:05:27,816 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 03:05:27,818 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 03:05:27,820 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 03:05:27,821 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 03:05:27,822 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 03:05:27,823 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 03:05:27,824 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 03:05:27,825 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 03:05:27,826 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 03:05:27,827 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 03:05:27,828 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 03:05:27,829 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 03:05:27,833 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 03:05:27,835 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 03:05:27,837 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 03:05:27,849 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 03:05:27,852 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 03:05:27,854 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 03:05:27,856 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 03:05:27,858 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 03:05:27,861 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 03:05:27,862 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 03:05:27,863 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 03:05:27,864 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 03:05:27,866 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 03:05:27,866 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 03:05:27,867 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 03:05:27,869 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 03:05:27,870 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 03:05:27,872 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 03:05:27,872 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 03:05:27,873 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 03:05:27,873 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 03:05:27,873 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 03:05:27,881 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 03:05:27,885 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 03:05:27,886 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 03:05:27,929 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 03:05:27,930 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 03:05:27,931 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 03:05:27,932 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 03:05:27,932 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 03:05:27,933 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 03:05:27,933 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 03:05:27,933 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 03:05:27,933 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 03:05:27,934 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 03:05:27,935 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 03:05:27,935 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 03:05:27,935 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 03:05:27,936 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 03:05:27,936 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 03:05:27,936 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 03:05:27,936 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 03:05:27,937 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 03:05:27,937 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 03:05:27,937 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 03:05:27,937 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 03:05:27,938 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 03:05:27,938 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 03:05:27,938 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 03:05:27,938 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 03:05:27,939 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 03:05:27,939 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 03:05:27,939 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 03:05:27,939 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 03:05:27,939 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 -> 9900832e3eb275a51766e54e18663ea088e173f4 [2020-10-20 03:05:28,203 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 03:05:28,222 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 03:05:28,225 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 03:05:28,227 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 03:05:28,228 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 03:05:28,229 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe017_tso.oepc.i [2020-10-20 03:05:28,304 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82f2824fa/453a2b3f3abd42bcac2a40f0172bc591/FLAG2a194254e [2020-10-20 03:05:28,982 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 03:05:28,984 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe017_tso.oepc.i [2020-10-20 03:05:29,010 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82f2824fa/453a2b3f3abd42bcac2a40f0172bc591/FLAG2a194254e [2020-10-20 03:05:29,227 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82f2824fa/453a2b3f3abd42bcac2a40f0172bc591 [2020-10-20 03:05:29,231 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 03:05:29,238 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 03:05:29,241 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 03:05:29,241 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 03:05:29,244 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 03:05:29,245 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 03:05:29" (1/1) ... [2020-10-20 03:05:29,249 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42b199b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:05:29, skipping insertion in model container [2020-10-20 03:05:29,249 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 03:05:29" (1/1) ... [2020-10-20 03:05:29,258 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 03:05:29,323 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 03:05:29,720 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 03:05:29,733 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 03:05:29,783 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 03:05:29,901 INFO L208 MainTranslator]: Completed translation [2020-10-20 03:05:29,902 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:05:29 WrapperNode [2020-10-20 03:05:29,902 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 03:05:29,903 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 03:05:29,904 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 03:05:29,904 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 03:05:29,915 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:05:29" (1/1) ... [2020-10-20 03:05:29,935 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:05:29" (1/1) ... [2020-10-20 03:05:29,962 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 03:05:29,962 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 03:05:29,963 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 03:05:29,963 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 03:05:29,973 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:05:29" (1/1) ... [2020-10-20 03:05:29,974 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:05:29" (1/1) ... [2020-10-20 03:05:29,978 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:05:29" (1/1) ... [2020-10-20 03:05:29,978 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:05:29" (1/1) ... [2020-10-20 03:05:29,986 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:05:29" (1/1) ... [2020-10-20 03:05:29,989 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:05:29" (1/1) ... [2020-10-20 03:05:29,991 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:05:29" (1/1) ... [2020-10-20 03:05:29,996 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 03:05:30,001 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 03:05:30,002 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 03:05:30,002 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 03:05:30,003 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:05:29" (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 03:05:30,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 03:05:30,080 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-20 03:05:30,080 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 03:05:30,080 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 03:05:30,081 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-20 03:05:30,081 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-20 03:05:30,081 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-20 03:05:30,081 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-20 03:05:30,082 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-20 03:05:30,082 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-20 03:05:30,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 03:05:30,082 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-20 03:05:30,083 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 03:05:30,083 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 03:05:30,085 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 03:05:30,508 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 03:05:30,509 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-10-20 03:05:30,512 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 03:05:30 BoogieIcfgContainer [2020-10-20 03:05:30,512 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 03:05:30,514 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 03:05:30,514 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 03:05:30,518 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 03:05:30,519 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 03:05:29" (1/3) ... [2020-10-20 03:05:30,520 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c9cada4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 03:05:30, skipping insertion in model container [2020-10-20 03:05:30,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:05:29" (2/3) ... [2020-10-20 03:05:30,521 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c9cada4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 03:05:30, skipping insertion in model container [2020-10-20 03:05:30,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 03:05:30" (3/3) ... [2020-10-20 03:05:30,523 INFO L111 eAbstractionObserver]: Analyzing ICFG safe017_tso.oepc.i [2020-10-20 03:05:30,537 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-20 03:05:30,537 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 03:05:30,546 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 03:05:30,548 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-20 03:05:30,581 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:30,581 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:30,582 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:30,582 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:30,583 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:30,583 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:30,584 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:30,584 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:30,584 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:30,585 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:30,585 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:30,585 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:30,586 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:30,586 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:30,587 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:30,587 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:30,587 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:30,588 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:30,592 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:30,592 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:30,593 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:30,593 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:30,610 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:30,611 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:30,611 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:30,611 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:30,618 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:30,618 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:30,618 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:30,619 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:05:30,624 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-20 03:05:30,638 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-20 03:05:30,657 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 03:05:30,657 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 03:05:30,657 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 03:05:30,658 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 03:05:30,658 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 03:05:30,658 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 03:05:30,658 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 03:05:30,659 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 03:05:30,672 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-20 03:05:30,675 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 83 places, 76 transitions, 167 flow [2020-10-20 03:05:30,677 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 83 places, 76 transitions, 167 flow [2020-10-20 03:05:30,679 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 83 places, 76 transitions, 167 flow [2020-10-20 03:05:30,731 INFO L129 PetriNetUnfolder]: 3/73 cut-off events. [2020-10-20 03:05:30,732 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-20 03:05:30,738 INFO L80 FinitePrefix]: Finished finitePrefix Result has 83 conditions, 73 events. 3/73 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 58 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 59. Up to 2 conditions per place. [2020-10-20 03:05:30,741 INFO L117 LiptonReduction]: Number of co-enabled transitions 1348 [2020-10-20 03:05:32,632 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2020-10-20 03:05:32,804 INFO L132 LiptonReduction]: Checked pairs total: 2406 [2020-10-20 03:05:32,805 INFO L134 LiptonReduction]: Total number of compositions: 68 [2020-10-20 03:05:32,813 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-10-20 03:05:32,839 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 274 states. [2020-10-20 03:05:32,841 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states. [2020-10-20 03:05:32,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-20 03:05:32,851 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:05:32,852 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:05:32,852 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:05:32,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:05:32,859 INFO L82 PathProgramCache]: Analyzing trace with hash 1461766860, now seen corresponding path program 1 times [2020-10-20 03:05:32,870 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:05:32,871 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135576905] [2020-10-20 03:05:32,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:05:32,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:05:33,057 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 03:05:33,061 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135576905] [2020-10-20 03:05:33,063 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:05:33,063 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 03:05:33,064 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404739158] [2020-10-20 03:05:33,069 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 03:05:33,070 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:05:33,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 03:05:33,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 03:05:33,085 INFO L87 Difference]: Start difference. First operand 274 states. Second operand 2 states. [2020-10-20 03:05:33,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:05:33,115 INFO L93 Difference]: Finished difference Result 274 states and 786 transitions. [2020-10-20 03:05:33,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 03:05:33,117 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-10-20 03:05:33,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:05:33,136 INFO L225 Difference]: With dead ends: 274 [2020-10-20 03:05:33,136 INFO L226 Difference]: Without dead ends: 226 [2020-10-20 03:05:33,138 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 03:05:33,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-10-20 03:05:33,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-10-20 03:05:33,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-10-20 03:05:33,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 634 transitions. [2020-10-20 03:05:33,212 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 634 transitions. Word has length 8 [2020-10-20 03:05:33,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:05:33,214 INFO L481 AbstractCegarLoop]: Abstraction has 226 states and 634 transitions. [2020-10-20 03:05:33,214 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 03:05:33,215 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 634 transitions. [2020-10-20 03:05:33,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-20 03:05:33,216 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:05:33,216 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:05:33,217 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 03:05:33,217 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:05:33,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:05:33,218 INFO L82 PathProgramCache]: Analyzing trace with hash -1929876305, now seen corresponding path program 1 times [2020-10-20 03:05:33,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:05:33,219 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019652515] [2020-10-20 03:05:33,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:05:33,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:05:33,382 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 03:05:33,383 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019652515] [2020-10-20 03:05:33,383 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:05:33,383 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 03:05:33,384 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913364498] [2020-10-20 03:05:33,386 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 03:05:33,386 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:05:33,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 03:05:33,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 03:05:33,387 INFO L87 Difference]: Start difference. First operand 226 states and 634 transitions. Second operand 4 states. [2020-10-20 03:05:33,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:05:33,444 INFO L93 Difference]: Finished difference Result 250 states and 668 transitions. [2020-10-20 03:05:33,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 03:05:33,445 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-20 03:05:33,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:05:33,448 INFO L225 Difference]: With dead ends: 250 [2020-10-20 03:05:33,448 INFO L226 Difference]: Without dead ends: 202 [2020-10-20 03:05:33,449 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 03:05:33,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-10-20 03:05:33,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-10-20 03:05:33,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-10-20 03:05:33,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 552 transitions. [2020-10-20 03:05:33,470 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 552 transitions. Word has length 9 [2020-10-20 03:05:33,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:05:33,471 INFO L481 AbstractCegarLoop]: Abstraction has 202 states and 552 transitions. [2020-10-20 03:05:33,471 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 03:05:33,471 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 552 transitions. [2020-10-20 03:05:33,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-20 03:05:33,473 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:05:33,473 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:05:33,473 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 03:05:33,474 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:05:33,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:05:33,474 INFO L82 PathProgramCache]: Analyzing trace with hash 303350682, now seen corresponding path program 1 times [2020-10-20 03:05:33,475 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:05:33,475 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397987815] [2020-10-20 03:05:33,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:05:33,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:05:33,588 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 03:05:33,589 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397987815] [2020-10-20 03:05:33,589 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:05:33,589 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 03:05:33,590 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283863274] [2020-10-20 03:05:33,590 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 03:05:33,591 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:05:33,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 03:05:33,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 03:05:33,592 INFO L87 Difference]: Start difference. First operand 202 states and 552 transitions. Second operand 4 states. [2020-10-20 03:05:33,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:05:33,627 INFO L93 Difference]: Finished difference Result 226 states and 589 transitions. [2020-10-20 03:05:33,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 03:05:33,628 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-20 03:05:33,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:05:33,631 INFO L225 Difference]: With dead ends: 226 [2020-10-20 03:05:33,631 INFO L226 Difference]: Without dead ends: 190 [2020-10-20 03:05:33,632 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 03:05:33,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-10-20 03:05:33,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2020-10-20 03:05:33,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-10-20 03:05:33,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 508 transitions. [2020-10-20 03:05:33,649 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 508 transitions. Word has length 10 [2020-10-20 03:05:33,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:05:33,650 INFO L481 AbstractCegarLoop]: Abstraction has 190 states and 508 transitions. [2020-10-20 03:05:33,650 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 03:05:33,650 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 508 transitions. [2020-10-20 03:05:33,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-20 03:05:33,652 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:05:33,652 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:05:33,652 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-20 03:05:33,653 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:05:33,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:05:33,653 INFO L82 PathProgramCache]: Analyzing trace with hash 813888440, now seen corresponding path program 1 times [2020-10-20 03:05:33,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:05:33,654 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985027007] [2020-10-20 03:05:33,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:05:33,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:05:33,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 03:05:33,734 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985027007] [2020-10-20 03:05:33,734 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:05:33,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 03:05:33,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765087840] [2020-10-20 03:05:33,735 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 03:05:33,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:05:33,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 03:05:33,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 03:05:33,737 INFO L87 Difference]: Start difference. First operand 190 states and 508 transitions. Second operand 5 states. [2020-10-20 03:05:33,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:05:33,788 INFO L93 Difference]: Finished difference Result 280 states and 745 transitions. [2020-10-20 03:05:33,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 03:05:33,789 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-10-20 03:05:33,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:05:33,791 INFO L225 Difference]: With dead ends: 280 [2020-10-20 03:05:33,792 INFO L226 Difference]: Without dead ends: 178 [2020-10-20 03:05:33,792 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-20 03:05:33,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-10-20 03:05:33,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2020-10-20 03:05:33,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-10-20 03:05:33,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 466 transitions. [2020-10-20 03:05:33,825 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 466 transitions. Word has length 11 [2020-10-20 03:05:33,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:05:33,825 INFO L481 AbstractCegarLoop]: Abstraction has 178 states and 466 transitions. [2020-10-20 03:05:33,825 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 03:05:33,826 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 466 transitions. [2020-10-20 03:05:33,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-20 03:05:33,828 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:05:33,828 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:05:33,828 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-20 03:05:33,830 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:05:33,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:05:33,831 INFO L82 PathProgramCache]: Analyzing trace with hash 813225350, now seen corresponding path program 2 times [2020-10-20 03:05:33,831 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:05:33,831 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817712839] [2020-10-20 03:05:33,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:05:33,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:05:33,937 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 03:05:33,938 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817712839] [2020-10-20 03:05:33,938 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:05:33,938 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 03:05:33,938 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766672889] [2020-10-20 03:05:33,939 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 03:05:33,939 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:05:33,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 03:05:33,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 03:05:33,944 INFO L87 Difference]: Start difference. First operand 178 states and 466 transitions. Second operand 4 states. [2020-10-20 03:05:33,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:05:33,964 INFO L93 Difference]: Finished difference Result 198 states and 500 transitions. [2020-10-20 03:05:33,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 03:05:33,965 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-20 03:05:33,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:05:33,967 INFO L225 Difference]: With dead ends: 198 [2020-10-20 03:05:33,967 INFO L226 Difference]: Without dead ends: 174 [2020-10-20 03:05:33,968 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 03:05:33,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-10-20 03:05:33,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2020-10-20 03:05:33,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-10-20 03:05:33,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 452 transitions. [2020-10-20 03:05:33,977 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 452 transitions. Word has length 11 [2020-10-20 03:05:33,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:05:33,978 INFO L481 AbstractCegarLoop]: Abstraction has 174 states and 452 transitions. [2020-10-20 03:05:33,978 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 03:05:33,978 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 452 transitions. [2020-10-20 03:05:33,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-20 03:05:33,980 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:05:33,980 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:05:33,981 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-20 03:05:33,981 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:05:33,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:05:33,981 INFO L82 PathProgramCache]: Analyzing trace with hash 90593002, now seen corresponding path program 1 times [2020-10-20 03:05:33,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:05:33,982 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619499382] [2020-10-20 03:05:33,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:05:33,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:05:34,033 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 03:05:34,033 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619499382] [2020-10-20 03:05:34,034 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:05:34,034 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 03:05:34,034 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671900189] [2020-10-20 03:05:34,035 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 03:05:34,035 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:05:34,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 03:05:34,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 03:05:34,035 INFO L87 Difference]: Start difference. First operand 174 states and 452 transitions. Second operand 5 states. [2020-10-20 03:05:34,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:05:34,113 INFO L93 Difference]: Finished difference Result 316 states and 773 transitions. [2020-10-20 03:05:34,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-20 03:05:34,114 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-10-20 03:05:34,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:05:34,115 INFO L225 Difference]: With dead ends: 316 [2020-10-20 03:05:34,116 INFO L226 Difference]: Without dead ends: 174 [2020-10-20 03:05:34,116 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-20 03:05:34,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-10-20 03:05:34,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 150. [2020-10-20 03:05:34,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-10-20 03:05:34,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 358 transitions. [2020-10-20 03:05:34,124 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 358 transitions. Word has length 12 [2020-10-20 03:05:34,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:05:34,124 INFO L481 AbstractCegarLoop]: Abstraction has 150 states and 358 transitions. [2020-10-20 03:05:34,125 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 03:05:34,125 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 358 transitions. [2020-10-20 03:05:34,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-20 03:05:34,127 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:05:34,127 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:05:34,140 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-20 03:05:34,141 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:05:34,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:05:34,141 INFO L82 PathProgramCache]: Analyzing trace with hash -90307094, now seen corresponding path program 1 times [2020-10-20 03:05:34,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:05:34,142 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287497823] [2020-10-20 03:05:34,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:05:34,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:05:34,204 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 03:05:34,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287497823] [2020-10-20 03:05:34,205 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:05:34,205 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 03:05:34,206 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697261435] [2020-10-20 03:05:34,206 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 03:05:34,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:05:34,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 03:05:34,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 03:05:34,207 INFO L87 Difference]: Start difference. First operand 150 states and 358 transitions. Second operand 4 states. [2020-10-20 03:05:34,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:05:34,239 INFO L93 Difference]: Finished difference Result 164 states and 351 transitions. [2020-10-20 03:05:34,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 03:05:34,240 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-20 03:05:34,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:05:34,241 INFO L225 Difference]: With dead ends: 164 [2020-10-20 03:05:34,241 INFO L226 Difference]: Without dead ends: 128 [2020-10-20 03:05:34,242 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 03:05:34,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-10-20 03:05:34,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2020-10-20 03:05:34,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-10-20 03:05:34,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 276 transitions. [2020-10-20 03:05:34,248 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 276 transitions. Word has length 12 [2020-10-20 03:05:34,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:05:34,248 INFO L481 AbstractCegarLoop]: Abstraction has 128 states and 276 transitions. [2020-10-20 03:05:34,248 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 03:05:34,249 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 276 transitions. [2020-10-20 03:05:34,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-20 03:05:34,250 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:05:34,250 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:05:34,250 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-20 03:05:34,251 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:05:34,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:05:34,251 INFO L82 PathProgramCache]: Analyzing trace with hash 85707411, now seen corresponding path program 1 times [2020-10-20 03:05:34,251 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:05:34,252 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601096935] [2020-10-20 03:05:34,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:05:34,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:05:34,320 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 03:05:34,321 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601096935] [2020-10-20 03:05:34,321 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:05:34,321 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 03:05:34,321 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480940687] [2020-10-20 03:05:34,322 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 03:05:34,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:05:34,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 03:05:34,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-20 03:05:34,323 INFO L87 Difference]: Start difference. First operand 128 states and 276 transitions. Second operand 5 states. [2020-10-20 03:05:34,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:05:34,364 INFO L93 Difference]: Finished difference Result 116 states and 222 transitions. [2020-10-20 03:05:34,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 03:05:34,365 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-20 03:05:34,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:05:34,366 INFO L225 Difference]: With dead ends: 116 [2020-10-20 03:05:34,367 INFO L226 Difference]: Without dead ends: 92 [2020-10-20 03:05:34,367 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-20 03:05:34,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-20 03:05:34,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2020-10-20 03:05:34,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-10-20 03:05:34,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 173 transitions. [2020-10-20 03:05:34,372 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 173 transitions. Word has length 13 [2020-10-20 03:05:34,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:05:34,373 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 173 transitions. [2020-10-20 03:05:34,373 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 03:05:34,373 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 173 transitions. [2020-10-20 03:05:34,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-20 03:05:34,374 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:05:34,375 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:05:34,375 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-20 03:05:34,375 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:05:34,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:05:34,376 INFO L82 PathProgramCache]: Analyzing trace with hash 1274722541, now seen corresponding path program 1 times [2020-10-20 03:05:34,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:05:34,377 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081810578] [2020-10-20 03:05:34,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:05:34,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:05:34,438 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 03:05:34,439 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081810578] [2020-10-20 03:05:34,439 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:05:34,439 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 03:05:34,439 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241489208] [2020-10-20 03:05:34,440 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 03:05:34,440 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:05:34,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 03:05:34,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 03:05:34,441 INFO L87 Difference]: Start difference. First operand 92 states and 173 transitions. Second operand 4 states. [2020-10-20 03:05:34,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:05:34,465 INFO L93 Difference]: Finished difference Result 104 states and 181 transitions. [2020-10-20 03:05:34,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 03:05:34,466 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-20 03:05:34,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:05:34,467 INFO L225 Difference]: With dead ends: 104 [2020-10-20 03:05:34,467 INFO L226 Difference]: Without dead ends: 70 [2020-10-20 03:05:34,467 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 03:05:34,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-20 03:05:34,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 68. [2020-10-20 03:05:34,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-20 03:05:34,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 115 transitions. [2020-10-20 03:05:34,470 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 115 transitions. Word has length 14 [2020-10-20 03:05:34,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:05:34,471 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 115 transitions. [2020-10-20 03:05:34,471 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 03:05:34,471 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 115 transitions. [2020-10-20 03:05:34,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-20 03:05:34,471 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:05:34,472 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:05:34,472 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-20 03:05:34,472 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:05:34,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:05:34,472 INFO L82 PathProgramCache]: Analyzing trace with hash -1788026541, now seen corresponding path program 1 times [2020-10-20 03:05:34,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:05:34,473 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348534537] [2020-10-20 03:05:34,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:05:34,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:05:34,529 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 03:05:34,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348534537] [2020-10-20 03:05:34,529 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:05:34,530 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-20 03:05:34,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282160024] [2020-10-20 03:05:34,530 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 03:05:34,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:05:34,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 03:05:34,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-20 03:05:34,531 INFO L87 Difference]: Start difference. First operand 68 states and 115 transitions. Second operand 6 states. [2020-10-20 03:05:34,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:05:34,586 INFO L93 Difference]: Finished difference Result 58 states and 100 transitions. [2020-10-20 03:05:34,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 03:05:34,586 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-20 03:05:34,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:05:34,587 INFO L225 Difference]: With dead ends: 58 [2020-10-20 03:05:34,587 INFO L226 Difference]: Without dead ends: 0 [2020-10-20 03:05:34,587 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-20 03:05:34,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-20 03:05:34,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-20 03:05:34,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-20 03:05:34,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-20 03:05:34,588 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-10-20 03:05:34,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:05:34,588 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 03:05:34,588 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 03:05:34,589 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-20 03:05:34,589 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-20 03:05:34,590 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-20 03:05:34,593 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 03:05:34 BasicIcfg [2020-10-20 03:05:34,593 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 03:05:34,594 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 03:05:34,594 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 03:05:34,594 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 03:05:34,595 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 03:05:30" (3/4) ... [2020-10-20 03:05:34,599 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-20 03:05:34,607 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-10-20 03:05:34,607 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-10-20 03:05:34,607 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-10-20 03:05:34,614 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-10-20 03:05:34,615 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-10-20 03:05:34,615 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 03:05:34,615 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 03:05:34,663 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 03:05:34,663 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 03:05:34,665 INFO L168 Benchmark]: Toolchain (without parser) took 5433.06 ms. Allocated memory was 39.8 MB in the beginning and 65.0 MB in the end (delta: 25.2 MB). Free memory was 16.3 MB in the beginning and 17.2 MB in the end (delta: -940.0 kB). Peak memory consumption was 24.2 MB. Max. memory is 14.3 GB. [2020-10-20 03:05:34,666 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 30.4 MB. Free memory was 6.5 MB in the beginning and 6.5 MB in the end (delta: 43.7 kB). Peak memory consumption was 43.7 kB. Max. memory is 14.3 GB. [2020-10-20 03:05:34,667 INFO L168 Benchmark]: CACSL2BoogieTranslator took 662.12 ms. Allocated memory was 39.8 MB in the beginning and 43.0 MB in the end (delta: 3.1 MB). Free memory was 15.4 MB in the beginning and 27.4 MB in the end (delta: -12.0 MB). Peak memory consumption was 8.2 MB. Max. memory is 14.3 GB. [2020-10-20 03:05:34,667 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.78 ms. Allocated memory is still 43.0 MB. Free memory was 27.1 MB in the beginning and 25.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 14.3 GB. [2020-10-20 03:05:34,668 INFO L168 Benchmark]: Boogie Preprocessor took 34.55 ms. Allocated memory is still 43.0 MB. Free memory was 25.1 MB in the beginning and 23.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 14.3 GB. [2020-10-20 03:05:34,668 INFO L168 Benchmark]: RCFGBuilder took 511.23 ms. Allocated memory was 43.0 MB in the beginning and 44.6 MB in the end (delta: 1.6 MB). Free memory was 23.6 MB in the beginning and 16.5 MB in the end (delta: 7.1 MB). Peak memory consumption was 13.0 MB. Max. memory is 14.3 GB. [2020-10-20 03:05:34,669 INFO L168 Benchmark]: TraceAbstraction took 4079.80 ms. Allocated memory was 44.6 MB in the beginning and 65.0 MB in the end (delta: 20.4 MB). Free memory was 15.9 MB in the beginning and 21.0 MB in the end (delta: -5.1 MB). Peak memory consumption was 15.3 MB. Max. memory is 14.3 GB. [2020-10-20 03:05:34,670 INFO L168 Benchmark]: Witness Printer took 69.38 ms. Allocated memory is still 65.0 MB. Free memory was 21.0 MB in the beginning and 17.2 MB in the end (delta: 3.8 MB). Peak memory consumption was 3.8 MB. Max. memory is 14.3 GB. [2020-10-20 03:05:34,674 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 30.4 MB. Free memory was 6.5 MB in the beginning and 6.5 MB in the end (delta: 43.7 kB). Peak memory consumption was 43.7 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 662.12 ms. Allocated memory was 39.8 MB in the beginning and 43.0 MB in the end (delta: 3.1 MB). Free memory was 15.4 MB in the beginning and 27.4 MB in the end (delta: -12.0 MB). Peak memory consumption was 8.2 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 58.78 ms. Allocated memory is still 43.0 MB. Free memory was 27.1 MB in the beginning and 25.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 34.55 ms. Allocated memory is still 43.0 MB. Free memory was 25.1 MB in the beginning and 23.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 14.3 GB. * RCFGBuilder took 511.23 ms. Allocated memory was 43.0 MB in the beginning and 44.6 MB in the end (delta: 1.6 MB). Free memory was 23.6 MB in the beginning and 16.5 MB in the end (delta: 7.1 MB). Peak memory consumption was 13.0 MB. Max. memory is 14.3 GB. * TraceAbstraction took 4079.80 ms. Allocated memory was 44.6 MB in the beginning and 65.0 MB in the end (delta: 20.4 MB). Free memory was 15.9 MB in the beginning and 21.0 MB in the end (delta: -5.1 MB). Peak memory consumption was 15.3 MB. Max. memory is 14.3 GB. * Witness Printer took 69.38 ms. Allocated memory is still 65.0 MB. Free memory was 21.0 MB in the beginning and 17.2 MB in the end (delta: 3.8 MB). Peak memory consumption was 3.8 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 899 VarBasedMoverChecksPositive, 38 VarBasedMoverChecksNegative, 9 SemBasedMoverChecksPositive, 29 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 54 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.1s, 83 PlacesBefore, 31 PlacesAfterwards, 76 TransitionsBefore, 22 TransitionsAfterwards, 1348 CoEnabledTransitionPairs, 5 FixpointIterations, 16 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 14 ConcurrentYvCompositions, 2 ChoiceCompositions, 68 TotalNumberOfCompositions, 2406 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, 74 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.9s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.1s, HoareTripleCheckerStatistics: 219 SDtfs, 191 SDslu, 335 SDs, 0 SdLazy, 125 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=274occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 26 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 115 NumberOfCodeBlocks, 115 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 105 ConstructedInterpolants, 0 QuantifiedInterpolants, 3565 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...