./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe027_tso.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 96f16385 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/safe027_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 d439fadc5ce3f113744e553cd7cac77e57953ff9 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-96f1638 [2020-12-02 12:11:34,115 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-02 12:11:34,118 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-02 12:11:34,154 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-02 12:11:34,155 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-02 12:11:34,156 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-02 12:11:34,158 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-02 12:11:34,160 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-02 12:11:34,162 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-02 12:11:34,163 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-02 12:11:34,164 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-02 12:11:34,166 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-02 12:11:34,166 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-02 12:11:34,167 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-02 12:11:34,169 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-02 12:11:34,170 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-02 12:11:34,171 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-02 12:11:34,172 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-02 12:11:34,174 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-02 12:11:34,177 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-02 12:11:34,178 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-02 12:11:34,180 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-02 12:11:34,182 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-02 12:11:34,183 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-02 12:11:34,197 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-02 12:11:34,197 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-02 12:11:34,198 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-02 12:11:34,199 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-02 12:11:34,200 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-02 12:11:34,201 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-02 12:11:34,201 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-02 12:11:34,202 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-02 12:11:34,203 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-02 12:11:34,204 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-02 12:11:34,206 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-02 12:11:34,206 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-02 12:11:34,215 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-02 12:11:34,216 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-02 12:11:34,216 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-02 12:11:34,217 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-02 12:11:34,218 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-02 12:11:34,219 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-02 12:11:34,245 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-02 12:11:34,246 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-02 12:11:34,247 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-02 12:11:34,247 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-02 12:11:34,248 INFO L138 SettingsManager]: * Use SBE=true [2020-12-02 12:11:34,248 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-02 12:11:34,248 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-02 12:11:34,249 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-02 12:11:34,249 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-02 12:11:34,249 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-02 12:11:34,249 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-02 12:11:34,250 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-02 12:11:34,250 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-02 12:11:34,250 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-02 12:11:34,250 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-02 12:11:34,251 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-02 12:11:34,251 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-02 12:11:34,251 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-02 12:11:34,251 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-02 12:11:34,252 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-02 12:11:34,252 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-02 12:11:34,252 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-02 12:11:34,253 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-02 12:11:34,253 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-02 12:11:34,253 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-02 12:11:34,253 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-02 12:11:34,254 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-02 12:11:34,254 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-02 12:11:34,254 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-02 12:11:34,254 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d439fadc5ce3f113744e553cd7cac77e57953ff9 [2020-12-02 12:11:34,758 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-02 12:11:34,790 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-02 12:11:34,794 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-02 12:11:34,795 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-02 12:11:34,797 INFO L275 PluginConnector]: CDTParser initialized [2020-12-02 12:11:34,798 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe027_tso.oepc.i [2020-12-02 12:11:34,894 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75626f0be/edee7591c95d464394fa61bded26e93c/FLAGa82436b0e [2020-12-02 12:11:35,477 INFO L306 CDTParser]: Found 1 translation units. [2020-12-02 12:11:35,478 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe027_tso.oepc.i [2020-12-02 12:11:35,502 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75626f0be/edee7591c95d464394fa61bded26e93c/FLAGa82436b0e [2020-12-02 12:11:35,812 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75626f0be/edee7591c95d464394fa61bded26e93c [2020-12-02 12:11:35,815 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-02 12:11:35,817 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-02 12:11:35,819 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-02 12:11:35,819 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-02 12:11:35,823 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-02 12:11:35,824 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:11:35" (1/1) ... [2020-12-02 12:11:35,827 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c969f03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:11:35, skipping insertion in model container [2020-12-02 12:11:35,828 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:11:35" (1/1) ... [2020-12-02 12:11:35,836 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-02 12:11:35,879 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-02 12:11:36,049 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe027_tso.oepc.i[950,963] [2020-12-02 12:11:36,288 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-02 12:11:36,301 INFO L203 MainTranslator]: Completed pre-run [2020-12-02 12:11:36,327 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe027_tso.oepc.i[950,963] [2020-12-02 12:11:36,393 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-02 12:11:36,497 INFO L208 MainTranslator]: Completed translation [2020-12-02 12:11:36,498 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:11:36 WrapperNode [2020-12-02 12:11:36,498 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-02 12:11:36,500 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-02 12:11:36,500 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-02 12:11:36,500 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-02 12:11:36,509 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:11:36" (1/1) ... [2020-12-02 12:11:36,525 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:11:36" (1/1) ... [2020-12-02 12:11:36,549 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-02 12:11:36,550 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-02 12:11:36,550 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-02 12:11:36,550 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-02 12:11:36,559 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:11:36" (1/1) ... [2020-12-02 12:11:36,560 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:11:36" (1/1) ... [2020-12-02 12:11:36,563 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:11:36" (1/1) ... [2020-12-02 12:11:36,564 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:11:36" (1/1) ... [2020-12-02 12:11:36,570 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:11:36" (1/1) ... [2020-12-02 12:11:36,573 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:11:36" (1/1) ... [2020-12-02 12:11:36,575 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:11:36" (1/1) ... [2020-12-02 12:11:36,578 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-02 12:11:36,580 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-02 12:11:36,580 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-02 12:11:36,580 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-02 12:11:36,581 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:11:36" (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 [2020-12-02 12:11:36,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-02 12:11:36,677 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-02 12:11:36,677 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-02 12:11:36,677 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-02 12:11:36,678 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-02 12:11:36,679 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-02 12:11:36,679 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-02 12:11:36,680 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-02 12:11:36,680 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-12-02 12:11:36,680 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-12-02 12:11:36,680 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-12-02 12:11:36,680 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-12-02 12:11:36,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-02 12:11:36,681 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-02 12:11:36,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-02 12:11:36,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-02 12:11:36,683 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-12-02 12:11:37,135 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-02 12:11:37,135 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-02 12:11:37,137 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:11:37 BoogieIcfgContainer [2020-12-02 12:11:37,138 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-02 12:11:37,139 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-02 12:11:37,140 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-02 12:11:37,143 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-02 12:11:37,143 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 12:11:35" (1/3) ... [2020-12-02 12:11:37,144 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ae6eb5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:11:37, skipping insertion in model container [2020-12-02 12:11:37,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:11:36" (2/3) ... [2020-12-02 12:11:37,145 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ae6eb5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:11:37, skipping insertion in model container [2020-12-02 12:11:37,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:11:37" (3/3) ... [2020-12-02 12:11:37,146 INFO L111 eAbstractionObserver]: Analyzing ICFG safe027_tso.oepc.i [2020-12-02 12:11:37,164 WARN L169 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-02 12:11:37,164 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-02 12:11:37,168 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-02 12:11:37,169 INFO L354 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-02 12:11:37,235 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:37,235 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:37,236 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:37,236 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:37,236 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:37,236 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:37,237 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:37,237 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:37,238 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:37,238 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:37,240 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:37,240 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:37,241 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:37,241 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:37,241 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:37,242 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:37,242 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:37,242 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:37,242 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:37,243 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:37,246 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:37,247 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:37,247 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:37,247 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:37,249 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:37,249 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:37,249 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:37,250 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:37,250 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:37,250 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:37,250 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:37,251 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:37,251 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:37,252 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:37,252 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:37,256 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:37,257 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:37,257 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:37,257 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:37,257 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:37,258 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:37,258 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:37,258 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:37,258 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:37,259 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:37,259 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:37,261 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:37,261 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:37,266 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:37,267 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:37,268 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:37,268 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:37,275 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:37,276 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:37,276 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:37,277 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:37,282 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:37,282 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:37,283 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:37,283 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:37,296 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:37,296 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:37,297 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:37,298 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:11:37,301 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-02 12:11:37,316 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-12-02 12:11:37,355 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-02 12:11:37,356 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-02 12:11:37,356 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-02 12:11:37,356 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-02 12:11:37,356 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-02 12:11:37,357 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-02 12:11:37,357 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-02 12:11:37,359 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-02 12:11:37,384 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-02 12:11:37,386 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 98 places, 87 transitions, 194 flow [2020-12-02 12:11:37,390 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 98 places, 87 transitions, 194 flow [2020-12-02 12:11:37,393 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 98 places, 87 transitions, 194 flow [2020-12-02 12:11:37,484 INFO L129 PetriNetUnfolder]: 2/83 cut-off events. [2020-12-02 12:11:37,485 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-02 12:11:37,505 INFO L84 FinitePrefix]: Finished finitePrefix Result has 96 conditions, 83 events. 2/83 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 64 event pairs, 0 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2020-12-02 12:11:37,508 INFO L116 LiptonReduction]: Number of co-enabled transitions 1866 [2020-12-02 12:11:40,563 WARN L197 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2020-12-02 12:11:40,848 WARN L197 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2020-12-02 12:11:41,166 INFO L131 LiptonReduction]: Checked pairs total: 3161 [2020-12-02 12:11:41,166 INFO L133 LiptonReduction]: Total number of compositions: 72 [2020-12-02 12:11:41,173 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 38 places, 25 transitions, 70 flow [2020-12-02 12:11:41,218 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 706 states. [2020-12-02 12:11:41,221 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states. [2020-12-02 12:11:41,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-02 12:11:41,230 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:11:41,230 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:11:41,231 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:11:41,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:11:41,237 INFO L82 PathProgramCache]: Analyzing trace with hash -545263439, now seen corresponding path program 1 times [2020-12-02 12:11:41,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:11:41,246 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682871650] [2020-12-02 12:11:41,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:11:41,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:11:41,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 12:11:41,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682871650] [2020-12-02 12:11:41,562 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:11:41,562 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-02 12:11:41,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561057042] [2020-12-02 12:11:41,571 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-02 12:11:41,571 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:11:41,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-02 12:11:41,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-02 12:11:41,589 INFO L87 Difference]: Start difference. First operand 706 states. Second operand 3 states. [2020-12-02 12:11:41,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:11:41,673 INFO L93 Difference]: Finished difference Result 832 states and 2781 transitions. [2020-12-02 12:11:41,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-02 12:11:41,675 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-12-02 12:11:41,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:11:41,698 INFO L225 Difference]: With dead ends: 832 [2020-12-02 12:11:41,699 INFO L226 Difference]: Without dead ends: 553 [2020-12-02 12:11:41,700 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 [2020-12-02 12:11:41,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2020-12-02 12:11:41,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 553. [2020-12-02 12:11:41,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 553 states. [2020-12-02 12:11:41,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 1851 transitions. [2020-12-02 12:11:41,835 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 1851 transitions. Word has length 10 [2020-12-02 12:11:41,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:11:41,836 INFO L481 AbstractCegarLoop]: Abstraction has 553 states and 1851 transitions. [2020-12-02 12:11:41,836 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-02 12:11:41,836 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 1851 transitions. [2020-12-02 12:11:41,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-02 12:11:41,841 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:11:41,841 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:11:41,841 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-02 12:11:41,842 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:11:41,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:11:41,846 INFO L82 PathProgramCache]: Analyzing trace with hash 1160874164, now seen corresponding path program 1 times [2020-12-02 12:11:41,846 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:11:41,847 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611920408] [2020-12-02 12:11:41,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:11:41,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:11:42,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 12:11:42,033 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611920408] [2020-12-02 12:11:42,033 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:11:42,033 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 12:11:42,034 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116408453] [2020-12-02 12:11:42,035 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 12:11:42,036 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:11:42,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 12:11:42,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:11:42,037 INFO L87 Difference]: Start difference. First operand 553 states and 1851 transitions. Second operand 4 states. [2020-12-02 12:11:42,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:11:42,059 INFO L93 Difference]: Finished difference Result 526 states and 1743 transitions. [2020-12-02 12:11:42,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-02 12:11:42,059 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-02 12:11:42,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:11:42,065 INFO L225 Difference]: With dead ends: 526 [2020-12-02 12:11:42,065 INFO L226 Difference]: Without dead ends: 526 [2020-12-02 12:11:42,066 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:11:42,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2020-12-02 12:11:42,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 526. [2020-12-02 12:11:42,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 526 states. [2020-12-02 12:11:42,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 1743 transitions. [2020-12-02 12:11:42,089 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 1743 transitions. Word has length 11 [2020-12-02 12:11:42,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:11:42,089 INFO L481 AbstractCegarLoop]: Abstraction has 526 states and 1743 transitions. [2020-12-02 12:11:42,089 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 12:11:42,089 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 1743 transitions. [2020-12-02 12:11:42,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-02 12:11:42,091 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:11:42,092 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:11:42,092 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-02 12:11:42,092 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:11:42,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:11:42,093 INFO L82 PathProgramCache]: Analyzing trace with hash 276701328, now seen corresponding path program 1 times [2020-12-02 12:11:42,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:11:42,093 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321056104] [2020-12-02 12:11:42,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:11:42,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:11:42,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 12:11:42,143 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321056104] [2020-12-02 12:11:42,144 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:11:42,144 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 12:11:42,144 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277146685] [2020-12-02 12:11:42,145 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 12:11:42,145 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:11:42,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 12:11:42,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:11:42,146 INFO L87 Difference]: Start difference. First operand 526 states and 1743 transitions. Second operand 4 states. [2020-12-02 12:11:42,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:11:42,170 INFO L93 Difference]: Finished difference Result 682 states and 2180 transitions. [2020-12-02 12:11:42,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-02 12:11:42,171 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-02 12:11:42,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:11:42,175 INFO L225 Difference]: With dead ends: 682 [2020-12-02 12:11:42,175 INFO L226 Difference]: Without dead ends: 394 [2020-12-02 12:11:42,176 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 [2020-12-02 12:11:42,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2020-12-02 12:11:42,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 394. [2020-12-02 12:11:42,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 394 states. [2020-12-02 12:11:42,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 1224 transitions. [2020-12-02 12:11:42,196 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 1224 transitions. Word has length 11 [2020-12-02 12:11:42,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:11:42,196 INFO L481 AbstractCegarLoop]: Abstraction has 394 states and 1224 transitions. [2020-12-02 12:11:42,196 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 12:11:42,196 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 1224 transitions. [2020-12-02 12:11:42,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-02 12:11:42,198 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:11:42,198 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:11:42,199 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-02 12:11:42,199 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:11:42,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:11:42,202 INFO L82 PathProgramCache]: Analyzing trace with hash 1446350552, now seen corresponding path program 1 times [2020-12-02 12:11:42,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:11:42,202 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58676226] [2020-12-02 12:11:42,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:11:42,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:11:42,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 12:11:42,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58676226] [2020-12-02 12:11:42,253 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:11:42,253 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-02 12:11:42,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084610938] [2020-12-02 12:11:42,253 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-02 12:11:42,254 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:11:42,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-02 12:11:42,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-02 12:11:42,255 INFO L87 Difference]: Start difference. First operand 394 states and 1224 transitions. Second operand 3 states. [2020-12-02 12:11:42,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:11:42,263 INFO L93 Difference]: Finished difference Result 376 states and 1155 transitions. [2020-12-02 12:11:42,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-02 12:11:42,264 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-12-02 12:11:42,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:11:42,267 INFO L225 Difference]: With dead ends: 376 [2020-12-02 12:11:42,267 INFO L226 Difference]: Without dead ends: 376 [2020-12-02 12:11:42,268 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 [2020-12-02 12:11:42,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2020-12-02 12:11:42,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 376. [2020-12-02 12:11:42,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 376 states. [2020-12-02 12:11:42,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 1155 transitions. [2020-12-02 12:11:42,282 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 1155 transitions. Word has length 12 [2020-12-02 12:11:42,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:11:42,282 INFO L481 AbstractCegarLoop]: Abstraction has 376 states and 1155 transitions. [2020-12-02 12:11:42,282 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-02 12:11:42,282 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 1155 transitions. [2020-12-02 12:11:42,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-02 12:11:42,283 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:11:42,283 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:11:42,283 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-02 12:11:42,284 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:11:42,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:11:42,284 INFO L82 PathProgramCache]: Analyzing trace with hash 367079963, now seen corresponding path program 1 times [2020-12-02 12:11:42,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:11:42,285 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518703778] [2020-12-02 12:11:42,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:11:42,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:11:42,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 12:11:42,362 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518703778] [2020-12-02 12:11:42,363 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:11:42,363 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:11:42,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919053003] [2020-12-02 12:11:42,364 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:11:42,364 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:11:42,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:11:42,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:11:42,366 INFO L87 Difference]: Start difference. First operand 376 states and 1155 transitions. Second operand 5 states. [2020-12-02 12:11:42,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:11:42,408 INFO L93 Difference]: Finished difference Result 466 states and 1398 transitions. [2020-12-02 12:11:42,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-02 12:11:42,408 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-12-02 12:11:42,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:11:42,411 INFO L225 Difference]: With dead ends: 466 [2020-12-02 12:11:42,411 INFO L226 Difference]: Without dead ends: 226 [2020-12-02 12:11:42,411 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-02 12:11:42,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-12-02 12:11:42,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-12-02 12:11:42,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-12-02 12:11:42,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 651 transitions. [2020-12-02 12:11:42,422 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 651 transitions. Word has length 13 [2020-12-02 12:11:42,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:11:42,422 INFO L481 AbstractCegarLoop]: Abstraction has 226 states and 651 transitions. [2020-12-02 12:11:42,422 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:11:42,422 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 651 transitions. [2020-12-02 12:11:42,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-02 12:11:42,423 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:11:42,423 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:11:42,423 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-02 12:11:42,423 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:11:42,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:11:42,424 INFO L82 PathProgramCache]: Analyzing trace with hash -1626162599, now seen corresponding path program 1 times [2020-12-02 12:11:42,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:11:42,424 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369162682] [2020-12-02 12:11:42,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:11:42,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:11:42,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 12:11:42,515 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369162682] [2020-12-02 12:11:42,516 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:11:42,516 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 12:11:42,516 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597816156] [2020-12-02 12:11:42,517 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 12:11:42,517 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:11:42,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 12:11:42,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:11:42,518 INFO L87 Difference]: Start difference. First operand 226 states and 651 transitions. Second operand 4 states. [2020-12-02 12:11:42,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:11:42,561 INFO L93 Difference]: Finished difference Result 287 states and 773 transitions. [2020-12-02 12:11:42,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-02 12:11:42,561 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-12-02 12:11:42,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:11:42,563 INFO L225 Difference]: With dead ends: 287 [2020-12-02 12:11:42,563 INFO L226 Difference]: Without dead ends: 206 [2020-12-02 12:11:42,564 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 [2020-12-02 12:11:42,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-12-02 12:11:42,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2020-12-02 12:11:42,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-12-02 12:11:42,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 559 transitions. [2020-12-02 12:11:42,571 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 559 transitions. Word has length 14 [2020-12-02 12:11:42,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:11:42,572 INFO L481 AbstractCegarLoop]: Abstraction has 206 states and 559 transitions. [2020-12-02 12:11:42,572 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 12:11:42,572 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 559 transitions. [2020-12-02 12:11:42,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-02 12:11:42,573 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:11:42,573 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:11:42,573 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-02 12:11:42,573 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:11:42,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:11:42,574 INFO L82 PathProgramCache]: Analyzing trace with hash 242504516, now seen corresponding path program 1 times [2020-12-02 12:11:42,574 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:11:42,574 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317188049] [2020-12-02 12:11:42,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:11:42,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:11:42,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 12:11:42,630 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317188049] [2020-12-02 12:11:42,630 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:11:42,631 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:11:42,631 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779717811] [2020-12-02 12:11:42,631 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:11:42,631 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:11:42,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:11:42,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:11:42,632 INFO L87 Difference]: Start difference. First operand 206 states and 559 transitions. Second operand 5 states. [2020-12-02 12:11:42,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:11:42,678 INFO L93 Difference]: Finished difference Result 227 states and 565 transitions. [2020-12-02 12:11:42,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-02 12:11:42,679 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-12-02 12:11:42,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:11:42,680 INFO L225 Difference]: With dead ends: 227 [2020-12-02 12:11:42,681 INFO L226 Difference]: Without dead ends: 162 [2020-12-02 12:11:42,681 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 [2020-12-02 12:11:42,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-12-02 12:11:42,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2020-12-02 12:11:42,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-12-02 12:11:42,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 391 transitions. [2020-12-02 12:11:42,687 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 391 transitions. Word has length 15 [2020-12-02 12:11:42,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:11:42,687 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 391 transitions. [2020-12-02 12:11:42,687 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:11:42,687 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 391 transitions. [2020-12-02 12:11:42,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-02 12:11:42,688 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:11:42,688 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:11:42,688 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-02 12:11:42,688 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:11:42,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:11:42,689 INFO L82 PathProgramCache]: Analyzing trace with hash -1073574531, now seen corresponding path program 1 times [2020-12-02 12:11:42,689 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:11:42,689 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128512559] [2020-12-02 12:11:42,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:11:42,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:11:42,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 12:11:42,747 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128512559] [2020-12-02 12:11:42,748 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:11:42,748 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-02 12:11:42,748 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305042472] [2020-12-02 12:11:42,748 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-02 12:11:42,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:11:42,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-02 12:11:42,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-02 12:11:42,749 INFO L87 Difference]: Start difference. First operand 162 states and 391 transitions. Second operand 6 states. [2020-12-02 12:11:42,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:11:42,800 INFO L93 Difference]: Finished difference Result 158 states and 360 transitions. [2020-12-02 12:11:42,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-02 12:11:42,801 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-12-02 12:11:42,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:11:42,802 INFO L225 Difference]: With dead ends: 158 [2020-12-02 12:11:42,803 INFO L226 Difference]: Without dead ends: 125 [2020-12-02 12:11:42,803 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 [2020-12-02 12:11:42,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-12-02 12:11:42,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2020-12-02 12:11:42,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-12-02 12:11:42,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 282 transitions. [2020-12-02 12:11:42,808 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 282 transitions. Word has length 16 [2020-12-02 12:11:42,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:11:42,808 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 282 transitions. [2020-12-02 12:11:42,809 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-02 12:11:42,809 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 282 transitions. [2020-12-02 12:11:42,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-02 12:11:42,809 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:11:42,810 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:11:42,810 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-02 12:11:42,810 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:11:42,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:11:42,811 INFO L82 PathProgramCache]: Analyzing trace with hash -678185987, now seen corresponding path program 1 times [2020-12-02 12:11:42,811 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:11:42,811 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231521406] [2020-12-02 12:11:42,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:11:42,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:11:42,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 12:11:42,856 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231521406] [2020-12-02 12:11:42,856 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:11:42,856 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:11:42,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827812260] [2020-12-02 12:11:42,857 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 12:11:42,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:11:42,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 12:11:42,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:11:42,858 INFO L87 Difference]: Start difference. First operand 125 states and 282 transitions. Second operand 4 states. [2020-12-02 12:11:42,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:11:42,889 INFO L93 Difference]: Finished difference Result 166 states and 368 transitions. [2020-12-02 12:11:42,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-02 12:11:42,889 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-12-02 12:11:42,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:11:42,891 INFO L225 Difference]: With dead ends: 166 [2020-12-02 12:11:42,891 INFO L226 Difference]: Without dead ends: 127 [2020-12-02 12:11:42,891 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 [2020-12-02 12:11:42,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-12-02 12:11:42,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 125. [2020-12-02 12:11:42,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-12-02 12:11:42,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 265 transitions. [2020-12-02 12:11:42,896 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 265 transitions. Word has length 18 [2020-12-02 12:11:42,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:11:42,896 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 265 transitions. [2020-12-02 12:11:42,896 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 12:11:42,896 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 265 transitions. [2020-12-02 12:11:42,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-02 12:11:42,898 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:11:42,898 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:11:42,899 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-02 12:11:42,899 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:11:42,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:11:42,899 INFO L82 PathProgramCache]: Analyzing trace with hash -972384293, now seen corresponding path program 1 times [2020-12-02 12:11:42,900 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:11:42,900 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648440542] [2020-12-02 12:11:42,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:11:42,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:11:42,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 12:11:42,963 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648440542] [2020-12-02 12:11:42,964 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:11:42,964 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:11:42,964 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629650295] [2020-12-02 12:11:42,965 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 12:11:42,965 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:11:42,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 12:11:42,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:11:42,966 INFO L87 Difference]: Start difference. First operand 125 states and 265 transitions. Second operand 4 states. [2020-12-02 12:11:42,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:11:42,981 INFO L93 Difference]: Finished difference Result 142 states and 293 transitions. [2020-12-02 12:11:42,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-02 12:11:42,981 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-12-02 12:11:42,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:11:42,984 INFO L225 Difference]: With dead ends: 142 [2020-12-02 12:11:42,984 INFO L226 Difference]: Without dead ends: 87 [2020-12-02 12:11:42,985 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 [2020-12-02 12:11:42,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-12-02 12:11:42,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 86. [2020-12-02 12:11:42,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-12-02 12:11:42,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 160 transitions. [2020-12-02 12:11:42,988 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 160 transitions. Word has length 18 [2020-12-02 12:11:42,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:11:42,988 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 160 transitions. [2020-12-02 12:11:42,988 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 12:11:42,989 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 160 transitions. [2020-12-02 12:11:42,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-02 12:11:42,989 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:11:42,990 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:11:42,990 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-02 12:11:42,990 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:11:42,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:11:42,992 INFO L82 PathProgramCache]: Analyzing trace with hash -2140587643, now seen corresponding path program 2 times [2020-12-02 12:11:42,992 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:11:42,992 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621348933] [2020-12-02 12:11:42,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:11:43,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:11:43,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 12:11:43,086 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621348933] [2020-12-02 12:11:43,087 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:11:43,087 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-02 12:11:43,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866053259] [2020-12-02 12:11:43,087 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-02 12:11:43,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:11:43,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-02 12:11:43,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-02 12:11:43,091 INFO L87 Difference]: Start difference. First operand 86 states and 160 transitions. Second operand 7 states. [2020-12-02 12:11:43,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:11:43,125 INFO L93 Difference]: Finished difference Result 81 states and 154 transitions. [2020-12-02 12:11:43,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-02 12:11:43,125 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-12-02 12:11:43,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:11:43,125 INFO L225 Difference]: With dead ends: 81 [2020-12-02 12:11:43,125 INFO L226 Difference]: Without dead ends: 0 [2020-12-02 12:11:43,126 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-12-02 12:11:43,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-02 12:11:43,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-02 12:11:43,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-02 12:11:43,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-02 12:11:43,126 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-12-02 12:11:43,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:11:43,127 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-02 12:11:43,127 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-02 12:11:43,127 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-02 12:11:43,127 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-02 12:11:43,127 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-02 12:11:43,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 12:11:43 BasicIcfg [2020-12-02 12:11:43,131 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-02 12:11:43,131 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-02 12:11:43,131 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-02 12:11:43,131 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-02 12:11:43,132 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:11:37" (3/4) ... [2020-12-02 12:11:43,135 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-02 12:11:43,141 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-12-02 12:11:43,141 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-12-02 12:11:43,142 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-12-02 12:11:43,142 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2020-12-02 12:11:43,146 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2020-12-02 12:11:43,147 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-02 12:11:43,147 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-02 12:11:43,147 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-02 12:11:43,198 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-12-02 12:11:43,198 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-02 12:11:43,200 INFO L168 Benchmark]: Toolchain (without parser) took 7382.53 ms. Allocated memory was 41.9 MB in the beginning and 140.5 MB in the end (delta: 98.6 MB). Free memory was 27.3 MB in the beginning and 81.7 MB in the end (delta: -54.4 MB). Peak memory consumption was 42.8 MB. Max. memory is 16.1 GB. [2020-12-02 12:11:43,201 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 41.9 MB. Free memory was 22.6 MB in the beginning and 22.6 MB in the end (delta: 69.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 12:11:43,201 INFO L168 Benchmark]: CACSL2BoogieTranslator took 680.23 ms. Allocated memory was 41.9 MB in the beginning and 50.3 MB in the end (delta: 8.4 MB). Free memory was 27.1 MB in the beginning and 26.9 MB in the end (delta: 293.1 kB). Peak memory consumption was 15.0 MB. Max. memory is 16.1 GB. [2020-12-02 12:11:43,202 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.35 ms. Allocated memory is still 50.3 MB. Free memory was 26.7 MB in the beginning and 24.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 12:11:43,202 INFO L168 Benchmark]: Boogie Preprocessor took 29.00 ms. Allocated memory is still 50.3 MB. Free memory was 24.7 MB in the beginning and 23.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 12:11:43,206 INFO L168 Benchmark]: RCFGBuilder took 558.20 ms. Allocated memory is still 50.3 MB. Free memory was 23.3 MB in the beginning and 23.4 MB in the end (delta: -98.4 kB). Peak memory consumption was 3.6 MB. Max. memory is 16.1 GB. [2020-12-02 12:11:43,207 INFO L168 Benchmark]: TraceAbstraction took 5991.24 ms. Allocated memory was 50.3 MB in the beginning and 140.5 MB in the end (delta: 90.2 MB). Free memory was 22.9 MB in the beginning and 84.8 MB in the end (delta: -61.9 MB). Peak memory consumption was 28.4 MB. Max. memory is 16.1 GB. [2020-12-02 12:11:43,207 INFO L168 Benchmark]: Witness Printer took 67.40 ms. Allocated memory is still 140.5 MB. Free memory was 84.8 MB in the beginning and 81.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 12:11:43,212 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 41.9 MB. Free memory was 22.6 MB in the beginning and 22.6 MB in the end (delta: 69.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 680.23 ms. Allocated memory was 41.9 MB in the beginning and 50.3 MB in the end (delta: 8.4 MB). Free memory was 27.1 MB in the beginning and 26.9 MB in the end (delta: 293.1 kB). Peak memory consumption was 15.0 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 49.35 ms. Allocated memory is still 50.3 MB. Free memory was 26.7 MB in the beginning and 24.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 29.00 ms. Allocated memory is still 50.3 MB. Free memory was 24.7 MB in the beginning and 23.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 558.20 ms. Allocated memory is still 50.3 MB. Free memory was 23.3 MB in the beginning and 23.4 MB in the end (delta: -98.4 kB). Peak memory consumption was 3.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5991.24 ms. Allocated memory was 50.3 MB in the beginning and 140.5 MB in the end (delta: 90.2 MB). Free memory was 22.9 MB in the beginning and 84.8 MB in the end (delta: -61.9 MB). Peak memory consumption was 28.4 MB. Max. memory is 16.1 GB. * Witness Printer took 67.40 ms. Allocated memory is still 140.5 MB. Free memory was 84.8 MB in the beginning and 81.7 MB in the end (delta: 3.1 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 1210 VarBasedMoverChecksPositive, 66 VarBasedMoverChecksNegative, 13 SemBasedMoverChecksPositive, 53 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.5s, 112 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.7s, 98 PlacesBefore, 38 PlacesAfterwards, 87 TransitionsBefore, 25 TransitionsAfterwards, 1866 CoEnabledTransitionPairs, 5 FixpointIterations, 19 TrivialSequentialCompositions, 46 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 2 ChoiceCompositions, 72 TotalNumberOfCompositions, 3161 MoverChecksTotal - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 86 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.7s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.8s, HoareTripleCheckerStatistics: 236 SDtfs, 264 SDslu, 334 SDs, 0 SdLazy, 176 SolverSat, 43 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 37 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=706occurred 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, 11 MinimizatonAttempts, 3 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 156 NumberOfCodeBlocks, 156 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 145 ConstructedInterpolants, 0 QuantifiedInterpolants, 8297 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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...