./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe000_pso.opt.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/safe000_pso.opt.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 2a065c13e78ed395198628ca646c9399c45083a0 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 03:02:27,797 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 03:02:27,799 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 03:02:27,838 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 03:02:27,839 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 03:02:27,852 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 03:02:27,853 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 03:02:27,855 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 03:02:27,857 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 03:02:27,858 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 03:02:27,859 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 03:02:27,860 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 03:02:27,860 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 03:02:27,861 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 03:02:27,862 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 03:02:27,863 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 03:02:27,864 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 03:02:27,865 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 03:02:27,869 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 03:02:27,870 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 03:02:27,882 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 03:02:27,885 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 03:02:27,886 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 03:02:27,887 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 03:02:27,889 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 03:02:27,893 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 03:02:27,894 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 03:02:27,895 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 03:02:27,898 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 03:02:27,899 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 03:02:27,900 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 03:02:27,900 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 03:02:27,901 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 03:02:27,902 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 03:02:27,904 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 03:02:27,904 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 03:02:27,905 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 03:02:27,905 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 03:02:27,905 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 03:02:27,907 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 03:02:27,909 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 03:02:27,910 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 03:02:27,951 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 03:02:27,951 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 03:02:27,954 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 03:02:27,954 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 03:02:27,954 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 03:02:27,955 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 03:02:27,955 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 03:02:27,955 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 03:02:27,955 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 03:02:27,956 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 03:02:27,957 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 03:02:27,957 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 03:02:27,958 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 03:02:27,958 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 03:02:27,958 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 03:02:27,959 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 03:02:27,959 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 03:02:27,959 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 03:02:27,959 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 03:02:27,960 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 03:02:27,960 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 03:02:27,960 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 03:02:27,960 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 03:02:27,961 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 03:02:27,961 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 03:02:27,961 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 03:02:27,961 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 03:02:27,962 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 03:02:27,962 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 03:02:27,962 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 -> 2a065c13e78ed395198628ca646c9399c45083a0 [2020-10-20 03:02:28,173 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 03:02:28,186 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 03:02:28,190 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 03:02:28,191 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 03:02:28,192 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 03:02:28,192 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe000_pso.opt.i [2020-10-20 03:02:28,256 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b6b98f1c/48e6282b528c42e7bcef00cd6e01ef30/FLAG78e6055ad [2020-10-20 03:02:28,796 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 03:02:28,797 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe000_pso.opt.i [2020-10-20 03:02:28,812 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b6b98f1c/48e6282b528c42e7bcef00cd6e01ef30/FLAG78e6055ad [2020-10-20 03:02:29,090 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b6b98f1c/48e6282b528c42e7bcef00cd6e01ef30 [2020-10-20 03:02:29,093 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 03:02:29,100 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 03:02:29,101 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 03:02:29,101 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 03:02:29,105 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 03:02:29,106 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 03:02:29" (1/1) ... [2020-10-20 03:02:29,109 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4eedc198 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:02:29, skipping insertion in model container [2020-10-20 03:02:29,109 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 03:02:29" (1/1) ... [2020-10-20 03:02:29,117 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 03:02:29,162 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 03:02:29,603 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 03:02:29,614 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 03:02:29,663 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 03:02:29,754 INFO L208 MainTranslator]: Completed translation [2020-10-20 03:02:29,755 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:02:29 WrapperNode [2020-10-20 03:02:29,755 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 03:02:29,756 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 03:02:29,756 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 03:02:29,756 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 03:02:29,765 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:02:29" (1/1) ... [2020-10-20 03:02:29,782 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:02:29" (1/1) ... [2020-10-20 03:02:29,806 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 03:02:29,807 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 03:02:29,807 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 03:02:29,807 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 03:02:29,817 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:02:29" (1/1) ... [2020-10-20 03:02:29,817 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:02:29" (1/1) ... [2020-10-20 03:02:29,820 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:02:29" (1/1) ... [2020-10-20 03:02:29,820 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:02:29" (1/1) ... [2020-10-20 03:02:29,827 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:02:29" (1/1) ... [2020-10-20 03:02:29,830 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:02:29" (1/1) ... [2020-10-20 03:02:29,832 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:02:29" (1/1) ... [2020-10-20 03:02:29,835 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 03:02:29,836 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 03:02:29,836 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 03:02:29,836 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 03:02:29,837 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:02:29" (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 03:02:29,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 03:02:29,907 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-20 03:02:29,908 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 03:02:29,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 03:02:29,918 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-20 03:02:29,918 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-20 03:02:29,919 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-20 03:02:29,919 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-20 03:02:29,919 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-20 03:02:29,921 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-20 03:02:29,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 03:02:29,921 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-20 03:02:29,921 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 03:02:29,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 03:02:29,924 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 03:02:30,294 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 03:02:30,295 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-10-20 03:02:30,298 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 03:02:30 BoogieIcfgContainer [2020-10-20 03:02:30,298 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 03:02:30,299 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 03:02:30,300 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 03:02:30,303 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 03:02:30,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 03:02:29" (1/3) ... [2020-10-20 03:02:30,304 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@349d9ec4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 03:02:30, skipping insertion in model container [2020-10-20 03:02:30,305 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:02:29" (2/3) ... [2020-10-20 03:02:30,305 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@349d9ec4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 03:02:30, skipping insertion in model container [2020-10-20 03:02:30,305 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 03:02:30" (3/3) ... [2020-10-20 03:02:30,307 INFO L111 eAbstractionObserver]: Analyzing ICFG safe000_pso.opt.i [2020-10-20 03:02:30,323 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-20 03:02:30,323 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 03:02:30,331 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 03:02:30,332 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-20 03:02:30,387 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:02:30,387 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:02:30,387 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:02:30,388 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:02:30,388 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:02:30,388 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:02:30,389 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:02:30,389 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:02:30,389 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:02:30,390 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:02:30,390 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:02:30,390 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:02:30,391 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:02:30,391 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:02:30,391 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:02:30,391 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:02:30,392 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:02:30,392 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:02:30,396 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:02:30,397 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:02:30,397 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:02:30,397 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:02:30,403 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:02:30,404 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:02:30,404 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:02:30,404 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:02:30,407 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:02:30,407 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:02:30,407 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:02:30,407 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:02:30,409 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-20 03:02:30,423 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-20 03:02:30,442 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 03:02:30,443 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 03:02:30,443 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 03:02:30,443 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 03:02:30,443 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 03:02:30,443 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 03:02:30,443 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 03:02:30,444 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 03:02:30,457 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-20 03:02:30,460 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 86 places, 79 transitions, 173 flow [2020-10-20 03:02:30,462 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 86 places, 79 transitions, 173 flow [2020-10-20 03:02:30,463 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 86 places, 79 transitions, 173 flow [2020-10-20 03:02:30,513 INFO L129 PetriNetUnfolder]: 3/76 cut-off events. [2020-10-20 03:02:30,513 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-20 03:02:30,519 INFO L80 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 76 events. 3/76 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. 0/72 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2020-10-20 03:02:30,522 INFO L117 LiptonReduction]: Number of co-enabled transitions 1440 [2020-10-20 03:02:32,456 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-10-20 03:02:32,569 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-10-20 03:02:32,581 INFO L132 LiptonReduction]: Checked pairs total: 2779 [2020-10-20 03:02:32,582 INFO L134 LiptonReduction]: Total number of compositions: 70 [2020-10-20 03:02:32,589 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-10-20 03:02:32,620 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-10-20 03:02:32,623 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-10-20 03:02:32,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-20 03:02:32,632 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:02:32,633 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:02:32,633 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:02:32,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:02:32,639 INFO L82 PathProgramCache]: Analyzing trace with hash -460323677, now seen corresponding path program 1 times [2020-10-20 03:02:32,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:02:32,650 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807603164] [2020-10-20 03:02:32,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:02:32,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:02:32,845 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 03:02:32,846 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807603164] [2020-10-20 03:02:32,847 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:02:32,848 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 03:02:32,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278658564] [2020-10-20 03:02:32,854 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 03:02:32,854 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:02:32,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 03:02:32,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 03:02:32,873 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-10-20 03:02:32,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:02:32,906 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-10-20 03:02:32,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 03:02:32,908 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-10-20 03:02:32,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:02:32,926 INFO L225 Difference]: With dead ends: 362 [2020-10-20 03:02:32,927 INFO L226 Difference]: Without dead ends: 298 [2020-10-20 03:02:32,929 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 03:02:32,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-10-20 03:02:32,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-10-20 03:02:32,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-10-20 03:02:33,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-10-20 03:02:33,006 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-10-20 03:02:33,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:02:33,011 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-10-20 03:02:33,011 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 03:02:33,011 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-10-20 03:02:33,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-20 03:02:33,016 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:02:33,016 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:02:33,017 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 03:02:33,017 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:02:33,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:02:33,017 INFO L82 PathProgramCache]: Analyzing trace with hash -1385173359, now seen corresponding path program 1 times [2020-10-20 03:02:33,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:02:33,020 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765204543] [2020-10-20 03:02:33,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:02:33,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:02:33,194 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 03:02:33,195 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765204543] [2020-10-20 03:02:33,195 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:02:33,195 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 03:02:33,196 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961369127] [2020-10-20 03:02:33,197 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 03:02:33,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:02:33,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 03:02:33,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-20 03:02:33,198 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 5 states. [2020-10-20 03:02:33,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:02:33,289 INFO L93 Difference]: Finished difference Result 330 states and 912 transitions. [2020-10-20 03:02:33,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 03:02:33,289 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-20 03:02:33,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:02:33,292 INFO L225 Difference]: With dead ends: 330 [2020-10-20 03:02:33,293 INFO L226 Difference]: Without dead ends: 266 [2020-10-20 03:02:33,294 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-20 03:02:33,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-10-20 03:02:33,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2020-10-20 03:02:33,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-10-20 03:02:33,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 752 transitions. [2020-10-20 03:02:33,312 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 752 transitions. Word has length 9 [2020-10-20 03:02:33,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:02:33,313 INFO L481 AbstractCegarLoop]: Abstraction has 266 states and 752 transitions. [2020-10-20 03:02:33,313 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 03:02:33,313 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 752 transitions. [2020-10-20 03:02:33,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-20 03:02:33,315 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:02:33,315 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:02:33,315 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 03:02:33,315 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:02:33,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:02:33,316 INFO L82 PathProgramCache]: Analyzing trace with hash 9178769, now seen corresponding path program 1 times [2020-10-20 03:02:33,316 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:02:33,316 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443588191] [2020-10-20 03:02:33,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:02:33,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:02:33,421 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 03:02:33,422 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443588191] [2020-10-20 03:02:33,422 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:02:33,422 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 03:02:33,423 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385816068] [2020-10-20 03:02:33,423 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 03:02:33,424 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:02:33,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 03:02:33,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-20 03:02:33,424 INFO L87 Difference]: Start difference. First operand 266 states and 752 transitions. Second operand 5 states. [2020-10-20 03:02:33,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:02:33,486 INFO L93 Difference]: Finished difference Result 290 states and 786 transitions. [2020-10-20 03:02:33,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 03:02:33,487 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-10-20 03:02:33,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:02:33,489 INFO L225 Difference]: With dead ends: 290 [2020-10-20 03:02:33,489 INFO L226 Difference]: Without dead ends: 242 [2020-10-20 03:02:33,490 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-20 03:02:33,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-10-20 03:02:33,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2020-10-20 03:02:33,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2020-10-20 03:02:33,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 670 transitions. [2020-10-20 03:02:33,503 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 670 transitions. Word has length 10 [2020-10-20 03:02:33,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:02:33,504 INFO L481 AbstractCegarLoop]: Abstraction has 242 states and 670 transitions. [2020-10-20 03:02:33,504 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 03:02:33,504 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 670 transitions. [2020-10-20 03:02:33,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-20 03:02:33,506 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:02:33,506 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:02:33,507 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-20 03:02:33,507 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:02:33,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:02:33,507 INFO L82 PathProgramCache]: Analyzing trace with hash 1127596450, now seen corresponding path program 1 times [2020-10-20 03:02:33,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:02:33,508 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940595965] [2020-10-20 03:02:33,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:02:33,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:02:33,562 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 03:02:33,562 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940595965] [2020-10-20 03:02:33,562 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:02:33,563 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 03:02:33,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696856757] [2020-10-20 03:02:33,564 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 03:02:33,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:02:33,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 03:02:33,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 03:02:33,564 INFO L87 Difference]: Start difference. First operand 242 states and 670 transitions. Second operand 4 states. [2020-10-20 03:02:33,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:02:33,583 INFO L93 Difference]: Finished difference Result 260 states and 694 transitions. [2020-10-20 03:02:33,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 03:02:33,584 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-20 03:02:33,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:02:33,586 INFO L225 Difference]: With dead ends: 260 [2020-10-20 03:02:33,586 INFO L226 Difference]: Without dead ends: 224 [2020-10-20 03:02:33,587 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 03:02:33,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-10-20 03:02:33,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 224. [2020-10-20 03:02:33,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2020-10-20 03:02:33,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 610 transitions. [2020-10-20 03:02:33,686 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 610 transitions. Word has length 11 [2020-10-20 03:02:33,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:02:33,687 INFO L481 AbstractCegarLoop]: Abstraction has 224 states and 610 transitions. [2020-10-20 03:02:33,687 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 03:02:33,687 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 610 transitions. [2020-10-20 03:02:33,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-20 03:02:33,689 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:02:33,690 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:02:33,690 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-20 03:02:33,690 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:02:33,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:02:33,691 INFO L82 PathProgramCache]: Analyzing trace with hash 1343804868, now seen corresponding path program 1 times [2020-10-20 03:02:33,691 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:02:33,692 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347536389] [2020-10-20 03:02:33,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:02:33,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:02:33,757 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 03:02:33,758 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347536389] [2020-10-20 03:02:33,758 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:02:33,761 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 03:02:33,762 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655134795] [2020-10-20 03:02:33,762 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 03:02:33,762 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:02:33,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 03:02:33,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 03:02:33,765 INFO L87 Difference]: Start difference. First operand 224 states and 610 transitions. Second operand 5 states. [2020-10-20 03:02:33,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:02:33,821 INFO L93 Difference]: Finished difference Result 293 states and 773 transitions. [2020-10-20 03:02:33,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 03:02:33,825 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-10-20 03:02:33,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:02:33,826 INFO L225 Difference]: With dead ends: 293 [2020-10-20 03:02:33,826 INFO L226 Difference]: Without dead ends: 146 [2020-10-20 03:02:33,827 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-20 03:02:33,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-10-20 03:02:33,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-10-20 03:02:33,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-20 03:02:33,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 358 transitions. [2020-10-20 03:02:33,833 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 358 transitions. Word has length 12 [2020-10-20 03:02:33,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:02:33,834 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 358 transitions. [2020-10-20 03:02:33,834 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 03:02:33,834 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 358 transitions. [2020-10-20 03:02:33,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-20 03:02:33,836 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:02:33,836 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:02:33,836 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-20 03:02:33,836 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:02:33,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:02:33,837 INFO L82 PathProgramCache]: Analyzing trace with hash -365258832, now seen corresponding path program 1 times [2020-10-20 03:02:33,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:02:33,838 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006085893] [2020-10-20 03:02:33,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:02:33,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:02:33,885 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 03:02:33,886 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006085893] [2020-10-20 03:02:33,886 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:02:33,886 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 03:02:33,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48013006] [2020-10-20 03:02:33,887 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 03:02:33,887 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:02:33,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 03:02:33,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 03:02:33,888 INFO L87 Difference]: Start difference. First operand 146 states and 358 transitions. Second operand 4 states. [2020-10-20 03:02:33,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:02:33,918 INFO L93 Difference]: Finished difference Result 160 states and 379 transitions. [2020-10-20 03:02:33,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 03:02:33,919 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-20 03:02:33,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:02:33,921 INFO L225 Difference]: With dead ends: 160 [2020-10-20 03:02:33,921 INFO L226 Difference]: Without dead ends: 142 [2020-10-20 03:02:33,921 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 03:02:33,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-10-20 03:02:33,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2020-10-20 03:02:33,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-20 03:02:33,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 344 transitions. [2020-10-20 03:02:33,927 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 344 transitions. Word has length 13 [2020-10-20 03:02:33,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:02:33,928 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 344 transitions. [2020-10-20 03:02:33,928 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 03:02:33,928 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 344 transitions. [2020-10-20 03:02:33,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-20 03:02:33,929 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:02:33,929 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:02:33,930 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-20 03:02:33,930 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:02:33,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:02:33,930 INFO L82 PathProgramCache]: Analyzing trace with hash 1116620912, now seen corresponding path program 1 times [2020-10-20 03:02:33,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:02:33,931 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575352564] [2020-10-20 03:02:33,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:02:33,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:02:33,985 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 03:02:33,986 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575352564] [2020-10-20 03:02:33,986 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:02:33,986 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 03:02:33,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192435945] [2020-10-20 03:02:33,987 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 03:02:33,987 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:02:33,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 03:02:33,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 03:02:33,988 INFO L87 Difference]: Start difference. First operand 142 states and 344 transitions. Second operand 5 states. [2020-10-20 03:02:34,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:02:34,030 INFO L93 Difference]: Finished difference Result 186 states and 444 transitions. [2020-10-20 03:02:34,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 03:02:34,031 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-10-20 03:02:34,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:02:34,032 INFO L225 Difference]: With dead ends: 186 [2020-10-20 03:02:34,032 INFO L226 Difference]: Without dead ends: 74 [2020-10-20 03:02:34,033 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 03:02:34,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-20 03:02:34,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-10-20 03:02:34,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-20 03:02:34,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 164 transitions. [2020-10-20 03:02:34,036 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 164 transitions. Word has length 14 [2020-10-20 03:02:34,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:02:34,037 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 164 transitions. [2020-10-20 03:02:34,037 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 03:02:34,037 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 164 transitions. [2020-10-20 03:02:34,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-20 03:02:34,037 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:02:34,038 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:02:34,038 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-20 03:02:34,038 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:02:34,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:02:34,038 INFO L82 PathProgramCache]: Analyzing trace with hash 1047574954, now seen corresponding path program 1 times [2020-10-20 03:02:34,039 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:02:34,039 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490742759] [2020-10-20 03:02:34,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:02:34,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:02:34,101 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 03:02:34,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490742759] [2020-10-20 03:02:34,102 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:02:34,102 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 03:02:34,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332486740] [2020-10-20 03:02:34,103 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 03:02:34,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:02:34,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 03:02:34,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-20 03:02:34,103 INFO L87 Difference]: Start difference. First operand 74 states and 164 transitions. Second operand 6 states. [2020-10-20 03:02:34,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:02:34,165 INFO L93 Difference]: Finished difference Result 62 states and 132 transitions. [2020-10-20 03:02:34,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 03:02:34,165 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-10-20 03:02:34,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:02:34,166 INFO L225 Difference]: With dead ends: 62 [2020-10-20 03:02:34,166 INFO L226 Difference]: Without dead ends: 0 [2020-10-20 03:02:34,166 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-20 03:02:34,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-20 03:02:34,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-20 03:02:34,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-20 03:02:34,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-20 03:02:34,167 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2020-10-20 03:02:34,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:02:34,168 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 03:02:34,168 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 03:02:34,168 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-20 03:02:34,168 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-20 03:02:34,168 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-20 03:02:34,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 03:02:34 BasicIcfg [2020-10-20 03:02:34,172 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 03:02:34,173 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 03:02:34,173 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 03:02:34,173 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 03:02:34,174 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 03:02:30" (3/4) ... [2020-10-20 03:02:34,178 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-20 03:02:34,186 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-10-20 03:02:34,187 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-10-20 03:02:34,187 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-10-20 03:02:34,196 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-10-20 03:02:34,196 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-10-20 03:02:34,196 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 03:02:34,197 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 03:02:34,244 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 03:02:34,244 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 03:02:34,246 INFO L168 Benchmark]: Toolchain (without parser) took 5151.16 ms. Allocated memory was 36.2 MB in the beginning and 80.2 MB in the end (delta: 44.0 MB). Free memory was 16.3 MB in the beginning and 31.3 MB in the end (delta: -15.1 MB). Peak memory consumption was 29.0 MB. Max. memory is 14.3 GB. [2020-10-20 03:02:34,247 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 33.6 MB. Free memory was 10.9 MB in the beginning and 10.9 MB in the end (delta: 45.5 kB). Peak memory consumption was 45.5 kB. Max. memory is 14.3 GB. [2020-10-20 03:02:34,248 INFO L168 Benchmark]: CACSL2BoogieTranslator took 654.01 ms. Allocated memory was 36.2 MB in the beginning and 46.1 MB in the end (delta: 10.0 MB). Free memory was 15.3 MB in the beginning and 18.0 MB in the end (delta: -2.7 MB). Peak memory consumption was 15.0 MB. Max. memory is 14.3 GB. [2020-10-20 03:02:34,248 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.71 ms. Allocated memory is still 46.1 MB. Free memory was 18.0 MB in the beginning and 15.7 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 14.3 GB. [2020-10-20 03:02:34,249 INFO L168 Benchmark]: Boogie Preprocessor took 28.81 ms. Allocated memory is still 46.1 MB. Free memory was 15.7 MB in the beginning and 14.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. [2020-10-20 03:02:34,250 INFO L168 Benchmark]: RCFGBuilder took 462.40 ms. Allocated memory was 46.1 MB in the beginning and 48.8 MB in the end (delta: 2.6 MB). Free memory was 14.1 MB in the beginning and 26.2 MB in the end (delta: -12.1 MB). Peak memory consumption was 4.6 MB. Max. memory is 14.3 GB. [2020-10-20 03:02:34,250 INFO L168 Benchmark]: TraceAbstraction took 3873.08 ms. Allocated memory was 48.8 MB in the beginning and 80.2 MB in the end (delta: 31.5 MB). Free memory was 25.8 MB in the beginning and 34.8 MB in the end (delta: -9.0 MB). Peak memory consumption was 22.5 MB. Max. memory is 14.3 GB. [2020-10-20 03:02:34,251 INFO L168 Benchmark]: Witness Printer took 71.37 ms. Allocated memory is still 80.2 MB. Free memory was 34.8 MB in the beginning and 31.3 MB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 14.3 GB. [2020-10-20 03:02:34,255 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 33.6 MB. Free memory was 10.9 MB in the beginning and 10.9 MB in the end (delta: 45.5 kB). Peak memory consumption was 45.5 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 654.01 ms. Allocated memory was 36.2 MB in the beginning and 46.1 MB in the end (delta: 10.0 MB). Free memory was 15.3 MB in the beginning and 18.0 MB in the end (delta: -2.7 MB). Peak memory consumption was 15.0 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 50.71 ms. Allocated memory is still 46.1 MB. Free memory was 18.0 MB in the beginning and 15.7 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 28.81 ms. Allocated memory is still 46.1 MB. Free memory was 15.7 MB in the beginning and 14.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. * RCFGBuilder took 462.40 ms. Allocated memory was 46.1 MB in the beginning and 48.8 MB in the end (delta: 2.6 MB). Free memory was 14.1 MB in the beginning and 26.2 MB in the end (delta: -12.1 MB). Peak memory consumption was 4.6 MB. Max. memory is 14.3 GB. * TraceAbstraction took 3873.08 ms. Allocated memory was 48.8 MB in the beginning and 80.2 MB in the end (delta: 31.5 MB). Free memory was 25.8 MB in the beginning and 34.8 MB in the end (delta: -9.0 MB). Peak memory consumption was 22.5 MB. Max. memory is 14.3 GB. * Witness Printer took 71.37 ms. Allocated memory is still 80.2 MB. Free memory was 34.8 MB in the beginning and 31.3 MB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 963 VarBasedMoverChecksPositive, 32 VarBasedMoverChecksNegative, 6 SemBasedMoverChecksPositive, 26 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 68 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.1s, 86 PlacesBefore, 32 PlacesAfterwards, 79 TransitionsBefore, 23 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 5 FixpointIterations, 18 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 2 ChoiceCompositions, 70 TotalNumberOfCompositions, 2779 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, 77 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.7s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.1s, HoareTripleCheckerStatistics: 158 SDtfs, 188 SDslu, 257 SDs, 0 SdLazy, 127 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 91 NumberOfCodeBlocks, 91 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 83 ConstructedInterpolants, 0 QuantifiedInterpolants, 3559 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...