./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe012_tso.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 54858612 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_1.5.800.v20200727-1323.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/safe012_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 c368bf714b2a378b5c407501fad688f5c7e62a21 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-5485861 [2020-10-26 00:29:42,617 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 00:29:42,620 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 00:29:42,670 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 00:29:42,671 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 00:29:42,677 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 00:29:42,679 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 00:29:42,686 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 00:29:42,690 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 00:29:42,698 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 00:29:42,700 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 00:29:42,706 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 00:29:42,707 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 00:29:42,710 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 00:29:42,712 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 00:29:42,714 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 00:29:42,716 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 00:29:42,722 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 00:29:42,728 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 00:29:42,737 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 00:29:42,739 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 00:29:42,741 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 00:29:42,743 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 00:29:42,746 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 00:29:42,754 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 00:29:42,755 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 00:29:42,755 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 00:29:42,757 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 00:29:42,758 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 00:29:42,759 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 00:29:42,760 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 00:29:42,761 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 00:29:42,764 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 00:29:42,765 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 00:29:42,766 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 00:29:42,766 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 00:29:42,767 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 00:29:42,768 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 00:29:42,768 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 00:29:42,770 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 00:29:42,774 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 00:29:42,775 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-26 00:29:42,823 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 00:29:42,823 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 00:29:42,825 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 00:29:42,825 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 00:29:42,826 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 00:29:42,826 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 00:29:42,826 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 00:29:42,827 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 00:29:42,827 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 00:29:42,827 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 00:29:42,827 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 00:29:42,828 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 00:29:42,828 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 00:29:42,828 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 00:29:42,828 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 00:29:42,829 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 00:29:42,829 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 00:29:42,829 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 00:29:42,830 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 00:29:42,830 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 00:29:42,830 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 00:29:42,830 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 00:29:42,831 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 00:29:42,831 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 00:29:42,831 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 00:29:42,831 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 00:29:42,832 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 00:29:42,832 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 00:29:42,832 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 00:29:42,832 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c368bf714b2a378b5c407501fad688f5c7e62a21 [2020-10-26 00:29:43,211 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 00:29:43,268 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 00:29:43,272 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 00:29:43,274 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 00:29:43,275 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 00:29:43,277 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe012_tso.oepc.i [2020-10-26 00:29:43,368 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e97dfede/54d6fa05ef2b4e17a00342a9362462bf/FLAG4896050b7 [2020-10-26 00:29:44,015 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 00:29:44,017 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe012_tso.oepc.i [2020-10-26 00:29:44,041 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e97dfede/54d6fa05ef2b4e17a00342a9362462bf/FLAG4896050b7 [2020-10-26 00:29:44,269 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e97dfede/54d6fa05ef2b4e17a00342a9362462bf [2020-10-26 00:29:44,272 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 00:29:44,279 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-26 00:29:44,281 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 00:29:44,281 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 00:29:44,285 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 00:29:44,286 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 12:29:44" (1/1) ... [2020-10-26 00:29:44,290 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35f0eda8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:29:44, skipping insertion in model container [2020-10-26 00:29:44,291 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 12:29:44" (1/1) ... [2020-10-26 00:29:44,306 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 00:29:44,352 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 00:29:44,873 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 00:29:44,903 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 00:29:44,972 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 00:29:45,068 INFO L208 MainTranslator]: Completed translation [2020-10-26 00:29:45,069 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:29:45 WrapperNode [2020-10-26 00:29:45,069 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 00:29:45,071 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-26 00:29:45,071 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-26 00:29:45,071 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-26 00:29:45,081 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:29:45" (1/1) ... [2020-10-26 00:29:45,101 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:29:45" (1/1) ... [2020-10-26 00:29:45,132 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-26 00:29:45,133 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 00:29:45,134 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 00:29:45,134 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 00:29:45,144 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:29:45" (1/1) ... [2020-10-26 00:29:45,145 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:29:45" (1/1) ... [2020-10-26 00:29:45,148 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:29:45" (1/1) ... [2020-10-26 00:29:45,149 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:29:45" (1/1) ... [2020-10-26 00:29:45,155 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:29:45" (1/1) ... [2020-10-26 00:29:45,158 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:29:45" (1/1) ... [2020-10-26 00:29:45,161 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:29:45" (1/1) ... [2020-10-26 00:29:45,169 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 00:29:45,171 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 00:29:45,174 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 00:29:45,174 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 00:29:45,179 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:29:45" (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 [2020-10-26 00:29:45,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 00:29:45,284 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-26 00:29:45,285 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 00:29:45,286 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 00:29:45,286 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-26 00:29:45,287 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-26 00:29:45,287 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-26 00:29:45,287 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-26 00:29:45,288 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-26 00:29:45,288 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-26 00:29:45,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 00:29:45,289 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-26 00:29:45,289 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 00:29:45,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 00:29:45,291 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-26 00:29:45,806 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 00:29:45,806 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-10-26 00:29:45,809 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 12:29:45 BoogieIcfgContainer [2020-10-26 00:29:45,809 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 00:29:45,811 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 00:29:45,811 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 00:29:45,815 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 00:29:45,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 12:29:44" (1/3) ... [2020-10-26 00:29:45,817 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@355c560d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 12:29:45, skipping insertion in model container [2020-10-26 00:29:45,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:29:45" (2/3) ... [2020-10-26 00:29:45,817 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@355c560d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 12:29:45, skipping insertion in model container [2020-10-26 00:29:45,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 12:29:45" (3/3) ... [2020-10-26 00:29:45,819 INFO L111 eAbstractionObserver]: Analyzing ICFG safe012_tso.oepc.i [2020-10-26 00:29:45,834 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-26 00:29:45,834 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-26 00:29:45,840 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 00:29:45,841 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-26 00:29:45,880 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:29:45,880 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:29:45,881 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:29:45,881 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:29:45,881 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:29:45,882 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:29:45,882 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:29:45,883 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:29:45,883 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:29:45,883 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:29:45,883 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:29:45,884 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:29:45,884 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:29:45,885 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:29:45,885 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:29:45,885 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:29:45,885 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:29:45,886 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:29:45,888 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:29:45,889 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:29:45,889 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:29:45,890 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:29:45,902 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:29:45,903 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:29:45,903 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:29:45,903 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:29:45,909 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:29:45,909 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:29:45,909 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:29:45,910 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:29:45,914 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-26 00:29:45,929 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-26 00:29:45,969 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 00:29:45,970 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 00:29:45,970 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-26 00:29:45,970 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 00:29:45,970 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 00:29:45,971 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 00:29:45,971 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 00:29:45,971 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 00:29:45,990 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-26 00:29:45,992 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 87 places, 80 transitions, 175 flow [2020-10-26 00:29:45,996 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 87 places, 80 transitions, 175 flow [2020-10-26 00:29:45,999 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 87 places, 80 transitions, 175 flow [2020-10-26 00:29:46,053 INFO L129 PetriNetUnfolder]: 3/77 cut-off events. [2020-10-26 00:29:46,053 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-26 00:29:46,058 INFO L80 FinitePrefix]: Finished finitePrefix Result has 87 conditions, 77 events. 3/77 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 62 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2020-10-26 00:29:46,062 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2020-10-26 00:29:46,453 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-10-26 00:29:47,714 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-10-26 00:29:48,234 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 40 [2020-10-26 00:29:48,901 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2020-10-26 00:29:49,013 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-10-26 00:29:49,171 INFO L131 LiptonReduction]: Checked pairs total: 2810 [2020-10-26 00:29:49,171 INFO L133 LiptonReduction]: Total number of compositions: 73 [2020-10-26 00:29:49,179 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-10-26 00:29:49,223 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-10-26 00:29:49,226 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-10-26 00:29:49,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-26 00:29:49,236 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:29:49,237 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:29:49,238 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:29:49,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:29:49,249 INFO L82 PathProgramCache]: Analyzing trace with hash -853874994, now seen corresponding path program 1 times [2020-10-26 00:29:49,260 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:29:49,261 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413994093] [2020-10-26 00:29:49,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:29:49,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:29:49,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:29:49,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413994093] [2020-10-26 00:29:49,546 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:29:49,547 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-26 00:29:49,547 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257876023] [2020-10-26 00:29:49,552 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-26 00:29:49,553 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:29:49,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-26 00:29:49,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-26 00:29:49,570 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-10-26 00:29:49,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:29:49,616 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-10-26 00:29:49,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-26 00:29:49,618 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-26 00:29:49,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:29:49,649 INFO L225 Difference]: With dead ends: 282 [2020-10-26 00:29:49,649 INFO L226 Difference]: Without dead ends: 218 [2020-10-26 00:29:49,651 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-26 00:29:49,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-10-26 00:29:49,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-10-26 00:29:49,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-10-26 00:29:49,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-10-26 00:29:49,741 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-10-26 00:29:49,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:29:49,743 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-10-26 00:29:49,743 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-26 00:29:49,744 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-10-26 00:29:49,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-26 00:29:49,747 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:29:49,748 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:29:49,749 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 00:29:49,749 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:29:49,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:29:49,751 INFO L82 PathProgramCache]: Analyzing trace with hash -700352928, now seen corresponding path program 1 times [2020-10-26 00:29:49,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:29:49,752 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121631427] [2020-10-26 00:29:49,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:29:49,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:29:49,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:29:49,893 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121631427] [2020-10-26 00:29:49,893 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:29:49,893 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-26 00:29:49,894 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172481508] [2020-10-26 00:29:49,896 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 00:29:49,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:29:49,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 00:29:49,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 00:29:49,898 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 4 states. [2020-10-26 00:29:49,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:29:49,946 INFO L93 Difference]: Finished difference Result 242 states and 634 transitions. [2020-10-26 00:29:49,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 00:29:49,947 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-26 00:29:49,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:29:49,949 INFO L225 Difference]: With dead ends: 242 [2020-10-26 00:29:49,949 INFO L226 Difference]: Without dead ends: 146 [2020-10-26 00:29:49,951 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 [2020-10-26 00:29:49,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-10-26 00:29:49,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-10-26 00:29:49,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-26 00:29:49,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 362 transitions. [2020-10-26 00:29:49,980 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 362 transitions. Word has length 9 [2020-10-26 00:29:49,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:29:49,980 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 362 transitions. [2020-10-26 00:29:49,980 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 00:29:49,981 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 362 transitions. [2020-10-26 00:29:49,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-26 00:29:49,983 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:29:49,983 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:29:49,983 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 00:29:49,984 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:29:49,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:29:49,984 INFO L82 PathProgramCache]: Analyzing trace with hash 2063010818, now seen corresponding path program 1 times [2020-10-26 00:29:49,985 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:29:49,985 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310065786] [2020-10-26 00:29:49,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:29:50,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:29:50,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:29:50,048 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310065786] [2020-10-26 00:29:50,049 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:29:50,049 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-26 00:29:50,049 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906095528] [2020-10-26 00:29:50,049 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-26 00:29:50,050 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:29:50,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-26 00:29:50,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-26 00:29:50,051 INFO L87 Difference]: Start difference. First operand 146 states and 362 transitions. Second operand 3 states. [2020-10-26 00:29:50,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:29:50,057 INFO L93 Difference]: Finished difference Result 140 states and 343 transitions. [2020-10-26 00:29:50,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-26 00:29:50,058 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-10-26 00:29:50,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:29:50,059 INFO L225 Difference]: With dead ends: 140 [2020-10-26 00:29:50,059 INFO L226 Difference]: Without dead ends: 140 [2020-10-26 00:29:50,060 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-26 00:29:50,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-10-26 00:29:50,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2020-10-26 00:29:50,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-26 00:29:50,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 343 transitions. [2020-10-26 00:29:50,084 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 343 transitions. Word has length 11 [2020-10-26 00:29:50,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:29:50,084 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 343 transitions. [2020-10-26 00:29:50,084 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-26 00:29:50,084 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 343 transitions. [2020-10-26 00:29:50,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-26 00:29:50,087 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:29:50,088 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:29:50,088 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 00:29:50,088 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:29:50,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:29:50,089 INFO L82 PathProgramCache]: Analyzing trace with hash 1374781277, now seen corresponding path program 1 times [2020-10-26 00:29:50,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:29:50,090 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206940825] [2020-10-26 00:29:50,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:29:50,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:29:50,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:29:50,193 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206940825] [2020-10-26 00:29:50,194 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:29:50,194 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-26 00:29:50,194 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930913720] [2020-10-26 00:29:50,195 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 00:29:50,195 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:29:50,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 00:29:50,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 00:29:50,196 INFO L87 Difference]: Start difference. First operand 140 states and 343 transitions. Second operand 4 states. [2020-10-26 00:29:50,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:29:50,224 INFO L93 Difference]: Finished difference Result 158 states and 376 transitions. [2020-10-26 00:29:50,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 00:29:50,225 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-26 00:29:50,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:29:50,226 INFO L225 Difference]: With dead ends: 158 [2020-10-26 00:29:50,226 INFO L226 Difference]: Without dead ends: 68 [2020-10-26 00:29:50,226 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 [2020-10-26 00:29:50,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-26 00:29:50,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-10-26 00:29:50,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-26 00:29:50,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 144 transitions. [2020-10-26 00:29:50,233 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 144 transitions. Word has length 12 [2020-10-26 00:29:50,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:29:50,233 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 144 transitions. [2020-10-26 00:29:50,233 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 00:29:50,234 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 144 transitions. [2020-10-26 00:29:50,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-26 00:29:50,235 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:29:50,235 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:29:50,235 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 00:29:50,235 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:29:50,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:29:50,236 INFO L82 PathProgramCache]: Analyzing trace with hash -1721558133, now seen corresponding path program 1 times [2020-10-26 00:29:50,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:29:50,237 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491631154] [2020-10-26 00:29:50,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:29:50,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:29:50,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:29:50,362 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491631154] [2020-10-26 00:29:50,362 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:29:50,362 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-26 00:29:50,362 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340513107] [2020-10-26 00:29:50,363 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 00:29:50,363 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:29:50,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 00:29:50,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 00:29:50,364 INFO L87 Difference]: Start difference. First operand 68 states and 144 transitions. Second operand 4 states. [2020-10-26 00:29:50,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:29:50,419 INFO L93 Difference]: Finished difference Result 81 states and 157 transitions. [2020-10-26 00:29:50,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 00:29:50,422 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-26 00:29:50,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:29:50,423 INFO L225 Difference]: With dead ends: 81 [2020-10-26 00:29:50,423 INFO L226 Difference]: Without dead ends: 59 [2020-10-26 00:29:50,424 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 [2020-10-26 00:29:50,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-26 00:29:50,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2020-10-26 00:29:50,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-26 00:29:50,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 114 transitions. [2020-10-26 00:29:50,428 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 114 transitions. Word has length 13 [2020-10-26 00:29:50,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:29:50,429 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 114 transitions. [2020-10-26 00:29:50,429 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 00:29:50,429 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 114 transitions. [2020-10-26 00:29:50,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-26 00:29:50,430 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:29:50,430 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:29:50,430 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 00:29:50,430 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:29:50,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:29:50,431 INFO L82 PathProgramCache]: Analyzing trace with hash -1881599875, now seen corresponding path program 1 times [2020-10-26 00:29:50,431 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:29:50,431 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784704276] [2020-10-26 00:29:50,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:29:50,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:29:50,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:29:50,515 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784704276] [2020-10-26 00:29:50,515 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:29:50,516 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 00:29:50,516 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473623957] [2020-10-26 00:29:50,516 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 00:29:50,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:29:50,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 00:29:50,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 00:29:50,517 INFO L87 Difference]: Start difference. First operand 59 states and 114 transitions. Second operand 5 states. [2020-10-26 00:29:50,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:29:50,568 INFO L93 Difference]: Finished difference Result 60 states and 104 transitions. [2020-10-26 00:29:50,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-26 00:29:50,568 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-10-26 00:29:50,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:29:50,569 INFO L225 Difference]: With dead ends: 60 [2020-10-26 00:29:50,569 INFO L226 Difference]: Without dead ends: 45 [2020-10-26 00:29:50,570 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-26 00:29:50,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-26 00:29:50,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-10-26 00:29:50,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-26 00:29:50,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 74 transitions. [2020-10-26 00:29:50,573 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 74 transitions. Word has length 14 [2020-10-26 00:29:50,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:29:50,573 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 74 transitions. [2020-10-26 00:29:50,573 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 00:29:50,573 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 74 transitions. [2020-10-26 00:29:50,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-26 00:29:50,574 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:29:50,574 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:29:50,574 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 00:29:50,574 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:29:50,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:29:50,575 INFO L82 PathProgramCache]: Analyzing trace with hash 1799830367, now seen corresponding path program 1 times [2020-10-26 00:29:50,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:29:50,575 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344595033] [2020-10-26 00:29:50,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:29:50,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:29:50,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:29:50,693 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344595033] [2020-10-26 00:29:50,693 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:29:50,694 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 00:29:50,694 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387555828] [2020-10-26 00:29:50,694 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 00:29:50,694 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:29:50,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 00:29:50,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-26 00:29:50,695 INFO L87 Difference]: Start difference. First operand 45 states and 74 transitions. Second operand 6 states. [2020-10-26 00:29:50,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:29:50,761 INFO L93 Difference]: Finished difference Result 42 states and 66 transitions. [2020-10-26 00:29:50,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 00:29:50,762 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-26 00:29:50,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:29:50,763 INFO L225 Difference]: With dead ends: 42 [2020-10-26 00:29:50,763 INFO L226 Difference]: Without dead ends: 36 [2020-10-26 00:29:50,764 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-26 00:29:50,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-26 00:29:50,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-10-26 00:29:50,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-26 00:29:50,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 56 transitions. [2020-10-26 00:29:50,767 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 56 transitions. Word has length 15 [2020-10-26 00:29:50,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:29:50,767 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 56 transitions. [2020-10-26 00:29:50,767 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 00:29:50,767 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 56 transitions. [2020-10-26 00:29:50,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-26 00:29:50,768 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:29:50,768 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:29:50,768 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 00:29:50,768 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:29:50,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:29:50,769 INFO L82 PathProgramCache]: Analyzing trace with hash -1269131745, now seen corresponding path program 1 times [2020-10-26 00:29:50,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:29:50,769 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246478818] [2020-10-26 00:29:50,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:29:50,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:29:50,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:29:50,810 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246478818] [2020-10-26 00:29:50,810 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:29:50,810 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 00:29:50,810 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235497159] [2020-10-26 00:29:50,811 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 00:29:50,811 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:29:50,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 00:29:50,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 00:29:50,812 INFO L87 Difference]: Start difference. First operand 36 states and 56 transitions. Second operand 4 states. [2020-10-26 00:29:50,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:29:50,824 INFO L93 Difference]: Finished difference Result 35 states and 55 transitions. [2020-10-26 00:29:50,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 00:29:50,825 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-26 00:29:50,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:29:50,825 INFO L225 Difference]: With dead ends: 35 [2020-10-26 00:29:50,825 INFO L226 Difference]: Without dead ends: 0 [2020-10-26 00:29:50,825 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 [2020-10-26 00:29:50,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-26 00:29:50,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-26 00:29:50,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-26 00:29:50,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-26 00:29:50,826 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-10-26 00:29:50,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:29:50,826 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-26 00:29:50,827 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 00:29:50,827 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-26 00:29:50,827 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-26 00:29:50,828 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 00:29:50,832 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 12:29:50 BasicIcfg [2020-10-26 00:29:50,832 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-26 00:29:50,833 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-26 00:29:50,833 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-26 00:29:50,833 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-26 00:29:50,834 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 12:29:45" (3/4) ... [2020-10-26 00:29:50,838 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-26 00:29:50,847 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-10-26 00:29:50,847 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-10-26 00:29:50,847 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-10-26 00:29:50,855 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-10-26 00:29:50,856 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-10-26 00:29:50,856 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-26 00:29:50,856 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-26 00:29:50,903 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-26 00:29:50,904 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-26 00:29:50,906 INFO L168 Benchmark]: Toolchain (without parser) took 6631.17 ms. Allocated memory was 50.3 MB in the beginning and 107.0 MB in the end (delta: 56.6 MB). Free memory was 33.8 MB in the beginning and 60.0 MB in the end (delta: -26.2 MB). Peak memory consumption was 30.2 MB. Max. memory is 16.1 GB. [2020-10-26 00:29:50,906 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 41.9 MB. Free memory was 27.4 MB in the beginning and 27.4 MB in the end (delta: 20.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 00:29:50,907 INFO L168 Benchmark]: CACSL2BoogieTranslator took 789.10 ms. Allocated memory is still 50.3 MB. Free memory was 33.1 MB in the beginning and 24.9 MB in the end (delta: 8.3 MB). Peak memory consumption was 15.1 MB. Max. memory is 16.1 GB. [2020-10-26 00:29:50,908 INFO L168 Benchmark]: Boogie Procedure Inliner took 62.13 ms. Allocated memory is still 50.3 MB. Free memory was 24.7 MB in the beginning and 22.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-26 00:29:50,908 INFO L168 Benchmark]: Boogie Preprocessor took 36.38 ms. Allocated memory is still 50.3 MB. Free memory was 22.7 MB in the beginning and 21.5 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 00:29:50,909 INFO L168 Benchmark]: RCFGBuilder took 638.58 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 21.3 MB in the beginning and 34.0 MB in the end (delta: -12.7 MB). Peak memory consumption was 3.4 MB. Max. memory is 16.1 GB. [2020-10-26 00:29:50,910 INFO L168 Benchmark]: TraceAbstraction took 5021.04 ms. Allocated memory was 60.8 MB in the beginning and 107.0 MB in the end (delta: 46.1 MB). Free memory was 33.4 MB in the beginning and 62.1 MB in the end (delta: -28.7 MB). Peak memory consumption was 18.1 MB. Max. memory is 16.1 GB. [2020-10-26 00:29:50,911 INFO L168 Benchmark]: Witness Printer took 71.23 ms. Allocated memory is still 107.0 MB. Free memory was 62.1 MB in the beginning and 60.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-26 00:29:50,919 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 41.9 MB. Free memory was 27.4 MB in the beginning and 27.4 MB in the end (delta: 20.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 789.10 ms. Allocated memory is still 50.3 MB. Free memory was 33.1 MB in the beginning and 24.9 MB in the end (delta: 8.3 MB). Peak memory consumption was 15.1 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 62.13 ms. Allocated memory is still 50.3 MB. Free memory was 24.7 MB in the beginning and 22.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 36.38 ms. Allocated memory is still 50.3 MB. Free memory was 22.7 MB in the beginning and 21.5 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 638.58 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 21.3 MB in the beginning and 34.0 MB in the end (delta: -12.7 MB). Peak memory consumption was 3.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5021.04 ms. Allocated memory was 60.8 MB in the beginning and 107.0 MB in the end (delta: 46.1 MB). Free memory was 33.4 MB in the beginning and 62.1 MB in the end (delta: -28.7 MB). Peak memory consumption was 18.1 MB. Max. memory is 16.1 GB. * Witness Printer took 71.23 ms. Allocated memory is still 107.0 MB. Free memory was 62.1 MB in the beginning and 60.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1064 VarBasedMoverChecksPositive, 47 VarBasedMoverChecksNegative, 10 SemBasedMoverChecksPositive, 37 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 90 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.1s, 87 PlacesBefore, 31 PlacesAfterwards, 80 TransitionsBefore, 22 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 6 FixpointIterations, 19 TrivialSequentialCompositions, 44 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 2 ChoiceCompositions, 73 TotalNumberOfCompositions, 2810 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, 78 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.8s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.2s, HoareTripleCheckerStatistics: 136 SDtfs, 121 SDslu, 149 SDs, 0 SdLazy, 97 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 99 NumberOfCodeBlocks, 99 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 91 ConstructedInterpolants, 0 QuantifiedInterpolants, 3385 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...