./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/thin002_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/thin002_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 586443bdba3a0440a46012510813ca1b149248c0 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 12:14:15,971 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-02 12:14:15,976 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-02 12:14:16,033 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-02 12:14:16,033 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-02 12:14:16,039 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-02 12:14:16,043 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-02 12:14:16,050 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-02 12:14:16,057 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-02 12:14:16,063 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-02 12:14:16,065 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-02 12:14:16,067 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-02 12:14:16,067 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-02 12:14:16,072 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-02 12:14:16,073 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-02 12:14:16,076 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-02 12:14:16,077 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-02 12:14:16,080 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-02 12:14:16,084 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-02 12:14:16,095 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-02 12:14:16,097 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-02 12:14:16,099 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-02 12:14:16,102 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-02 12:14:16,103 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-02 12:14:16,112 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-02 12:14:16,112 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-02 12:14:16,113 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-02 12:14:16,115 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-02 12:14:16,123 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-02 12:14:16,124 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-02 12:14:16,125 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-02 12:14:16,126 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-02 12:14:16,127 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-02 12:14:16,127 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-02 12:14:16,129 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-02 12:14:16,129 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-02 12:14:16,130 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-02 12:14:16,130 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-02 12:14:16,130 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-02 12:14:16,131 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-02 12:14:16,132 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-02 12:14:16,133 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-02 12:14:16,159 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-02 12:14:16,160 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-02 12:14:16,181 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-02 12:14:16,181 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-02 12:14:16,182 INFO L138 SettingsManager]: * Use SBE=true [2020-12-02 12:14:16,182 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-02 12:14:16,185 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-02 12:14:16,185 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-02 12:14:16,186 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-02 12:14:16,186 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-02 12:14:16,186 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-02 12:14:16,186 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-02 12:14:16,186 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-02 12:14:16,186 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-02 12:14:16,187 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-02 12:14:16,187 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-02 12:14:16,187 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-02 12:14:16,187 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-02 12:14:16,187 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-02 12:14:16,188 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-02 12:14:16,188 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-02 12:14:16,191 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-02 12:14:16,191 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-02 12:14:16,192 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-02 12:14:16,192 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-02 12:14:16,192 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-02 12:14:16,192 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-02 12:14:16,192 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-02 12:14:16,193 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-02 12:14:16,193 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 586443bdba3a0440a46012510813ca1b149248c0 [2020-12-02 12:14:16,590 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-02 12:14:16,615 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-02 12:14:16,618 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-02 12:14:16,620 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-02 12:14:16,621 INFO L275 PluginConnector]: CDTParser initialized [2020-12-02 12:14:16,623 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/thin002_tso.oepc.i [2020-12-02 12:14:16,709 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2a48021c/9511d09c3b5d43fe968c3862a1bbd781/FLAG0974ee378 [2020-12-02 12:14:17,584 INFO L306 CDTParser]: Found 1 translation units. [2020-12-02 12:14:17,585 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/thin002_tso.oepc.i [2020-12-02 12:14:17,604 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2a48021c/9511d09c3b5d43fe968c3862a1bbd781/FLAG0974ee378 [2020-12-02 12:14:17,836 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2a48021c/9511d09c3b5d43fe968c3862a1bbd781 [2020-12-02 12:14:17,840 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-02 12:14:17,850 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-02 12:14:17,852 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-02 12:14:17,854 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-02 12:14:17,858 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-02 12:14:17,860 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:14:17" (1/1) ... [2020-12-02 12:14:17,865 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3252465c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:14:17, skipping insertion in model container [2020-12-02 12:14:17,866 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:14:17" (1/1) ... [2020-12-02 12:14:17,875 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-02 12:14:17,954 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-02 12:14:18,242 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/thin002_tso.oepc.i[950,963] [2020-12-02 12:14:18,516 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-02 12:14:18,531 INFO L203 MainTranslator]: Completed pre-run [2020-12-02 12:14:18,548 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/thin002_tso.oepc.i[950,963] [2020-12-02 12:14:18,626 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-02 12:14:18,753 INFO L208 MainTranslator]: Completed translation [2020-12-02 12:14:18,754 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:14:18 WrapperNode [2020-12-02 12:14:18,754 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-02 12:14:18,756 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-02 12:14:18,756 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-02 12:14:18,756 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-02 12:14:18,766 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:14:18" (1/1) ... [2020-12-02 12:14:18,783 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:14:18" (1/1) ... [2020-12-02 12:14:18,808 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-02 12:14:18,809 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-02 12:14:18,809 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-02 12:14:18,809 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-02 12:14:18,819 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:14:18" (1/1) ... [2020-12-02 12:14:18,820 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:14:18" (1/1) ... [2020-12-02 12:14:18,823 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:14:18" (1/1) ... [2020-12-02 12:14:18,824 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:14:18" (1/1) ... [2020-12-02 12:14:18,830 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:14:18" (1/1) ... [2020-12-02 12:14:18,833 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:14:18" (1/1) ... [2020-12-02 12:14:18,835 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:14:18" (1/1) ... [2020-12-02 12:14:18,839 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-02 12:14:18,840 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-02 12:14:18,840 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-02 12:14:18,840 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-02 12:14:18,841 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:14:18" (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 12:14:18,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-02 12:14:18,950 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-02 12:14:18,950 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-02 12:14:18,951 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-02 12:14:18,951 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-02 12:14:18,951 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-02 12:14:18,951 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-02 12:14:18,952 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-02 12:14:18,952 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-12-02 12:14:18,952 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-12-02 12:14:18,957 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-12-02 12:14:18,957 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-12-02 12:14:18,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-02 12:14:18,958 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-02 12:14:18,958 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-02 12:14:18,958 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-02 12:14:18,961 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 12:14:19,368 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-02 12:14:19,368 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-02 12:14:19,371 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:14:19 BoogieIcfgContainer [2020-12-02 12:14:19,371 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-02 12:14:19,373 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-02 12:14:19,373 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-02 12:14:19,378 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-02 12:14:19,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 12:14:17" (1/3) ... [2020-12-02 12:14:19,379 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49af9c2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:14:19, skipping insertion in model container [2020-12-02 12:14:19,380 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:14:18" (2/3) ... [2020-12-02 12:14:19,380 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49af9c2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:14:19, skipping insertion in model container [2020-12-02 12:14:19,380 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:14:19" (3/3) ... [2020-12-02 12:14:19,382 INFO L111 eAbstractionObserver]: Analyzing ICFG thin002_tso.oepc.i [2020-12-02 12:14:19,400 WARN L169 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-02 12:14:19,401 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-02 12:14:19,405 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-02 12:14:19,406 INFO L354 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-02 12:14:19,457 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:19,457 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:19,457 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:19,458 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:19,458 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:19,458 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:19,459 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:19,459 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:19,460 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:19,460 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:19,460 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:19,461 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:19,462 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:19,462 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:19,464 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:19,464 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:19,465 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:19,465 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:19,467 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:19,467 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:19,468 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:19,468 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:19,469 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:19,470 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:19,471 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:19,471 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:19,473 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:19,473 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:19,474 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:19,474 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:19,474 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:19,474 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:19,475 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:19,478 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:19,480 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:19,480 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:19,481 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:19,481 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:19,481 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:19,482 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:19,482 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:19,482 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:19,482 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:19,483 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:19,483 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:19,484 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:19,484 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:19,485 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:19,487 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:19,491 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:19,491 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:19,492 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:19,499 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:19,504 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:19,505 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:19,505 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:19,510 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:19,513 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:19,513 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:19,514 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:19,516 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:19,518 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:19,518 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:19,523 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:14:19,526 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-02 12:14:19,539 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-12-02 12:14:19,563 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-02 12:14:19,563 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-02 12:14:19,563 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-02 12:14:19,563 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-02 12:14:19,564 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-02 12:14:19,564 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-02 12:14:19,564 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-02 12:14:19,564 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-02 12:14:19,580 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-02 12:14:19,583 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 102 places, 91 transitions, 202 flow [2020-12-02 12:14:19,587 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 102 places, 91 transitions, 202 flow [2020-12-02 12:14:19,589 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 102 places, 91 transitions, 202 flow [2020-12-02 12:14:19,648 INFO L129 PetriNetUnfolder]: 2/87 cut-off events. [2020-12-02 12:14:19,649 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-02 12:14:19,654 INFO L84 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 87 events. 2/87 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 70 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 70. Up to 2 conditions per place. [2020-12-02 12:14:19,658 INFO L116 LiptonReduction]: Number of co-enabled transitions 2064 [2020-12-02 12:14:22,798 WARN L197 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 82 [2020-12-02 12:14:23,123 WARN L197 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 82 [2020-12-02 12:14:23,228 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2020-12-02 12:14:23,235 INFO L131 LiptonReduction]: Checked pairs total: 4338 [2020-12-02 12:14:23,235 INFO L133 LiptonReduction]: Total number of compositions: 72 [2020-12-02 12:14:23,242 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 41 places, 29 transitions, 78 flow [2020-12-02 12:14:23,343 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 1450 states. [2020-12-02 12:14:23,345 INFO L276 IsEmpty]: Start isEmpty. Operand 1450 states. [2020-12-02 12:14:23,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-02 12:14:23,355 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:14:23,356 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:14:23,357 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:14:23,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:14:23,363 INFO L82 PathProgramCache]: Analyzing trace with hash -1256759632, now seen corresponding path program 1 times [2020-12-02 12:14:23,374 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:14:23,374 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144231214] [2020-12-02 12:14:23,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:14:23,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:14:23,574 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 12:14:23,574 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144231214] [2020-12-02 12:14:23,575 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:14:23,576 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 12:14:23,576 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822014847] [2020-12-02 12:14:23,581 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-02 12:14:23,582 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:14:23,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-02 12:14:23,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-02 12:14:23,601 INFO L87 Difference]: Start difference. First operand 1450 states. Second operand 2 states. [2020-12-02 12:14:23,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:14:23,666 INFO L93 Difference]: Finished difference Result 1450 states and 5376 transitions. [2020-12-02 12:14:23,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-02 12:14:23,667 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-12-02 12:14:23,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:14:23,712 INFO L225 Difference]: With dead ends: 1450 [2020-12-02 12:14:23,713 INFO L226 Difference]: Without dead ends: 1194 [2020-12-02 12:14:23,714 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-02 12:14:23,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1194 states. [2020-12-02 12:14:23,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1194 to 1194. [2020-12-02 12:14:23,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1194 states. [2020-12-02 12:14:23,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1194 states to 1194 states and 4352 transitions. [2020-12-02 12:14:23,875 INFO L78 Accepts]: Start accepts. Automaton has 1194 states and 4352 transitions. Word has length 10 [2020-12-02 12:14:23,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:14:23,877 INFO L481 AbstractCegarLoop]: Abstraction has 1194 states and 4352 transitions. [2020-12-02 12:14:23,877 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-02 12:14:23,877 INFO L276 IsEmpty]: Start isEmpty. Operand 1194 states and 4352 transitions. [2020-12-02 12:14:23,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-02 12:14:23,880 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:14:23,880 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:14:23,881 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-02 12:14:23,881 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:14:23,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:14:23,882 INFO L82 PathProgramCache]: Analyzing trace with hash -304847029, now seen corresponding path program 1 times [2020-12-02 12:14:23,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:14:23,883 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951622290] [2020-12-02 12:14:23,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:14:23,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:14:24,078 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 12:14:24,079 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951622290] [2020-12-02 12:14:24,080 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:14:24,080 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 12:14:24,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197835259] [2020-12-02 12:14:24,086 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 12:14:24,087 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:14:24,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 12:14:24,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:14:24,090 INFO L87 Difference]: Start difference. First operand 1194 states and 4352 transitions. Second operand 4 states. [2020-12-02 12:14:24,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:14:24,161 INFO L93 Difference]: Finished difference Result 1448 states and 5111 transitions. [2020-12-02 12:14:24,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-02 12:14:24,161 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-02 12:14:24,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:14:24,173 INFO L225 Difference]: With dead ends: 1448 [2020-12-02 12:14:24,174 INFO L226 Difference]: Without dead ends: 1192 [2020-12-02 12:14:24,175 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 12:14:24,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1192 states. [2020-12-02 12:14:24,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1192 to 1192. [2020-12-02 12:14:24,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1192 states. [2020-12-02 12:14:24,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1192 states to 1192 states and 4342 transitions. [2020-12-02 12:14:24,227 INFO L78 Accepts]: Start accepts. Automaton has 1192 states and 4342 transitions. Word has length 11 [2020-12-02 12:14:24,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:14:24,228 INFO L481 AbstractCegarLoop]: Abstraction has 1192 states and 4342 transitions. [2020-12-02 12:14:24,228 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 12:14:24,228 INFO L276 IsEmpty]: Start isEmpty. Operand 1192 states and 4342 transitions. [2020-12-02 12:14:24,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-02 12:14:24,231 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:14:24,231 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:14:24,231 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-02 12:14:24,231 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:14:24,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:14:24,232 INFO L82 PathProgramCache]: Analyzing trace with hash -835567243, now seen corresponding path program 1 times [2020-12-02 12:14:24,232 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:14:24,232 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259851848] [2020-12-02 12:14:24,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:14:24,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:14:24,343 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 12:14:24,344 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259851848] [2020-12-02 12:14:24,345 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:14:24,345 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:14:24,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332307378] [2020-12-02 12:14:24,347 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:14:24,347 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:14:24,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:14:24,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:14:24,349 INFO L87 Difference]: Start difference. First operand 1192 states and 4342 transitions. Second operand 5 states. [2020-12-02 12:14:24,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:14:24,499 INFO L93 Difference]: Finished difference Result 2413 states and 8471 transitions. [2020-12-02 12:14:24,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-02 12:14:24,500 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-12-02 12:14:24,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:14:24,519 INFO L225 Difference]: With dead ends: 2413 [2020-12-02 12:14:24,520 INFO L226 Difference]: Without dead ends: 1870 [2020-12-02 12:14:24,520 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-02 12:14:24,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1870 states. [2020-12-02 12:14:24,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1870 to 1492. [2020-12-02 12:14:24,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1492 states. [2020-12-02 12:14:24,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1492 states to 1492 states and 5352 transitions. [2020-12-02 12:14:24,608 INFO L78 Accepts]: Start accepts. Automaton has 1492 states and 5352 transitions. Word has length 12 [2020-12-02 12:14:24,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:14:24,608 INFO L481 AbstractCegarLoop]: Abstraction has 1492 states and 5352 transitions. [2020-12-02 12:14:24,608 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:14:24,609 INFO L276 IsEmpty]: Start isEmpty. Operand 1492 states and 5352 transitions. [2020-12-02 12:14:24,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-02 12:14:24,611 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:14:24,611 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:14:24,612 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-02 12:14:24,614 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:14:24,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:14:24,614 INFO L82 PathProgramCache]: Analyzing trace with hash -832796680, now seen corresponding path program 1 times [2020-12-02 12:14:24,615 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:14:24,615 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83235058] [2020-12-02 12:14:24,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:14:24,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:14:24,766 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 12:14:24,767 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83235058] [2020-12-02 12:14:24,767 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:14:24,770 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:14:24,771 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759816956] [2020-12-02 12:14:24,772 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:14:24,772 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:14:24,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:14:24,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:14:24,776 INFO L87 Difference]: Start difference. First operand 1492 states and 5352 transitions. Second operand 5 states. [2020-12-02 12:14:24,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:14:24,839 INFO L93 Difference]: Finished difference Result 1618 states and 5634 transitions. [2020-12-02 12:14:24,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-02 12:14:24,841 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-12-02 12:14:24,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:14:24,861 INFO L225 Difference]: With dead ends: 1618 [2020-12-02 12:14:24,862 INFO L226 Difference]: Without dead ends: 1366 [2020-12-02 12:14:24,862 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-02 12:14:24,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1366 states. [2020-12-02 12:14:24,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1366 to 1366. [2020-12-02 12:14:24,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1366 states. [2020-12-02 12:14:24,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1366 states to 1366 states and 4818 transitions. [2020-12-02 12:14:24,948 INFO L78 Accepts]: Start accepts. Automaton has 1366 states and 4818 transitions. Word has length 12 [2020-12-02 12:14:24,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:14:24,949 INFO L481 AbstractCegarLoop]: Abstraction has 1366 states and 4818 transitions. [2020-12-02 12:14:24,949 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:14:24,949 INFO L276 IsEmpty]: Start isEmpty. Operand 1366 states and 4818 transitions. [2020-12-02 12:14:24,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-02 12:14:24,951 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:14:24,952 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:14:24,952 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-02 12:14:24,952 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:14:24,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:14:24,953 INFO L82 PathProgramCache]: Analyzing trace with hash -105254130, now seen corresponding path program 1 times [2020-12-02 12:14:24,953 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:14:24,954 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173405697] [2020-12-02 12:14:24,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:14:24,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:14:25,055 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 12:14:25,056 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173405697] [2020-12-02 12:14:25,056 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:14:25,056 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:14:25,057 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412792234] [2020-12-02 12:14:25,057 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:14:25,057 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:14:25,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:14:25,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:14:25,059 INFO L87 Difference]: Start difference. First operand 1366 states and 4818 transitions. Second operand 5 states. [2020-12-02 12:14:25,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:14:25,110 INFO L93 Difference]: Finished difference Result 1456 states and 5010 transitions. [2020-12-02 12:14:25,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-02 12:14:25,111 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-12-02 12:14:25,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:14:25,123 INFO L225 Difference]: With dead ends: 1456 [2020-12-02 12:14:25,123 INFO L226 Difference]: Without dead ends: 1276 [2020-12-02 12:14:25,124 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-02 12:14:25,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1276 states. [2020-12-02 12:14:25,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1276 to 1168. [2020-12-02 12:14:25,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1168 states. [2020-12-02 12:14:25,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1168 states to 1168 states and 4059 transitions. [2020-12-02 12:14:25,174 INFO L78 Accepts]: Start accepts. Automaton has 1168 states and 4059 transitions. Word has length 13 [2020-12-02 12:14:25,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:14:25,175 INFO L481 AbstractCegarLoop]: Abstraction has 1168 states and 4059 transitions. [2020-12-02 12:14:25,175 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:14:25,175 INFO L276 IsEmpty]: Start isEmpty. Operand 1168 states and 4059 transitions. [2020-12-02 12:14:25,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-02 12:14:25,177 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:14:25,177 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:14:25,177 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-02 12:14:25,178 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:14:25,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:14:25,178 INFO L82 PathProgramCache]: Analyzing trace with hash -134657847, now seen corresponding path program 1 times [2020-12-02 12:14:25,179 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:14:25,179 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686243819] [2020-12-02 12:14:25,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:14:25,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:14:25,246 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 12:14:25,247 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686243819] [2020-12-02 12:14:25,248 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:14:25,248 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:14:25,248 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82069802] [2020-12-02 12:14:25,248 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:14:25,249 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:14:25,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:14:25,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:14:25,250 INFO L87 Difference]: Start difference. First operand 1168 states and 4059 transitions. Second operand 5 states. [2020-12-02 12:14:25,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:14:25,344 INFO L93 Difference]: Finished difference Result 1879 states and 6375 transitions. [2020-12-02 12:14:25,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-02 12:14:25,344 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-12-02 12:14:25,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:14:25,357 INFO L225 Difference]: With dead ends: 1879 [2020-12-02 12:14:25,357 INFO L226 Difference]: Without dead ends: 1438 [2020-12-02 12:14:25,358 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-02 12:14:25,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1438 states. [2020-12-02 12:14:25,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1438 to 1114. [2020-12-02 12:14:25,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1114 states. [2020-12-02 12:14:25,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1114 states to 1114 states and 3834 transitions. [2020-12-02 12:14:25,418 INFO L78 Accepts]: Start accepts. Automaton has 1114 states and 3834 transitions. Word has length 13 [2020-12-02 12:14:25,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:14:25,419 INFO L481 AbstractCegarLoop]: Abstraction has 1114 states and 3834 transitions. [2020-12-02 12:14:25,419 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:14:25,419 INFO L276 IsEmpty]: Start isEmpty. Operand 1114 states and 3834 transitions. [2020-12-02 12:14:25,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-02 12:14:25,421 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:14:25,421 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:14:25,422 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-02 12:14:25,422 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:14:25,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:14:25,423 INFO L82 PathProgramCache]: Analyzing trace with hash 118994859, now seen corresponding path program 1 times [2020-12-02 12:14:25,423 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:14:25,423 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029835503] [2020-12-02 12:14:25,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:14:25,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:14:25,493 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 12:14:25,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029835503] [2020-12-02 12:14:25,494 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:14:25,494 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:14:25,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968156374] [2020-12-02 12:14:25,495 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:14:25,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:14:25,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:14:25,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:14:25,496 INFO L87 Difference]: Start difference. First operand 1114 states and 3834 transitions. Second operand 5 states. [2020-12-02 12:14:25,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:14:25,589 INFO L93 Difference]: Finished difference Result 1831 states and 6166 transitions. [2020-12-02 12:14:25,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-02 12:14:25,589 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-12-02 12:14:25,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:14:25,602 INFO L225 Difference]: With dead ends: 1831 [2020-12-02 12:14:25,605 INFO L226 Difference]: Without dead ends: 1480 [2020-12-02 12:14:25,606 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-02 12:14:25,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1480 states. [2020-12-02 12:14:25,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1480 to 1102. [2020-12-02 12:14:25,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1102 states. [2020-12-02 12:14:25,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1102 states to 1102 states and 3745 transitions. [2020-12-02 12:14:25,655 INFO L78 Accepts]: Start accepts. Automaton has 1102 states and 3745 transitions. Word has length 14 [2020-12-02 12:14:25,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:14:25,655 INFO L481 AbstractCegarLoop]: Abstraction has 1102 states and 3745 transitions. [2020-12-02 12:14:25,655 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:14:25,655 INFO L276 IsEmpty]: Start isEmpty. Operand 1102 states and 3745 transitions. [2020-12-02 12:14:25,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-02 12:14:25,658 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:14:25,658 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:14:25,658 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-02 12:14:25,659 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:14:25,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:14:25,659 INFO L82 PathProgramCache]: Analyzing trace with hash 119501306, now seen corresponding path program 1 times [2020-12-02 12:14:25,660 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:14:25,660 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666771160] [2020-12-02 12:14:25,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:14:25,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:14:25,760 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 12:14:25,760 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666771160] [2020-12-02 12:14:25,760 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:14:25,761 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:14:25,761 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017241566] [2020-12-02 12:14:25,761 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:14:25,761 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:14:25,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:14:25,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:14:25,762 INFO L87 Difference]: Start difference. First operand 1102 states and 3745 transitions. Second operand 5 states. [2020-12-02 12:14:25,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:14:25,793 INFO L93 Difference]: Finished difference Result 1156 states and 3853 transitions. [2020-12-02 12:14:25,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-02 12:14:25,794 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-12-02 12:14:25,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:14:25,803 INFO L225 Difference]: With dead ends: 1156 [2020-12-02 12:14:25,803 INFO L226 Difference]: Without dead ends: 1048 [2020-12-02 12:14:25,804 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-02 12:14:25,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1048 states. [2020-12-02 12:14:25,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1048 to 940. [2020-12-02 12:14:25,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 940 states. [2020-12-02 12:14:25,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 940 states to 940 states and 3196 transitions. [2020-12-02 12:14:25,843 INFO L78 Accepts]: Start accepts. Automaton has 940 states and 3196 transitions. Word has length 14 [2020-12-02 12:14:25,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:14:25,844 INFO L481 AbstractCegarLoop]: Abstraction has 940 states and 3196 transitions. [2020-12-02 12:14:25,844 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:14:25,844 INFO L276 IsEmpty]: Start isEmpty. Operand 940 states and 3196 transitions. [2020-12-02 12:14:25,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-02 12:14:25,847 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:14:25,847 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:14:25,847 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-02 12:14:25,848 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:14:25,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:14:25,848 INFO L82 PathProgramCache]: Analyzing trace with hash -330143100, now seen corresponding path program 1 times [2020-12-02 12:14:25,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:14:25,853 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668720120] [2020-12-02 12:14:25,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:14:25,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:14:25,969 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 12:14:25,970 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668720120] [2020-12-02 12:14:25,971 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:14:25,971 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-02 12:14:25,972 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411018958] [2020-12-02 12:14:25,972 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-02 12:14:25,972 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:14:25,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-02 12:14:25,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-02 12:14:25,973 INFO L87 Difference]: Start difference. First operand 940 states and 3196 transitions. Second operand 6 states. [2020-12-02 12:14:26,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:14:26,023 INFO L93 Difference]: Finished difference Result 1189 states and 3968 transitions. [2020-12-02 12:14:26,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-02 12:14:26,023 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-12-02 12:14:26,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:14:26,028 INFO L225 Difference]: With dead ends: 1189 [2020-12-02 12:14:26,028 INFO L226 Difference]: Without dead ends: 544 [2020-12-02 12:14:26,029 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-02 12:14:26,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2020-12-02 12:14:26,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 544. [2020-12-02 12:14:26,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2020-12-02 12:14:26,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 1746 transitions. [2020-12-02 12:14:26,048 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 1746 transitions. Word has length 15 [2020-12-02 12:14:26,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:14:26,048 INFO L481 AbstractCegarLoop]: Abstraction has 544 states and 1746 transitions. [2020-12-02 12:14:26,048 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-02 12:14:26,048 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 1746 transitions. [2020-12-02 12:14:26,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-02 12:14:26,049 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:14:26,049 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:14:26,049 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-02 12:14:26,050 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:14:26,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:14:26,050 INFO L82 PathProgramCache]: Analyzing trace with hash -272320691, now seen corresponding path program 1 times [2020-12-02 12:14:26,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:14:26,051 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038420360] [2020-12-02 12:14:26,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:14:26,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:14:26,128 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 12:14:26,128 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038420360] [2020-12-02 12:14:26,128 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:14:26,128 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-02 12:14:26,129 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705958570] [2020-12-02 12:14:26,129 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-02 12:14:26,129 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:14:26,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-02 12:14:26,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-02 12:14:26,130 INFO L87 Difference]: Start difference. First operand 544 states and 1746 transitions. Second operand 6 states. [2020-12-02 12:14:26,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:14:26,175 INFO L93 Difference]: Finished difference Result 712 states and 2244 transitions. [2020-12-02 12:14:26,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-02 12:14:26,176 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-12-02 12:14:26,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:14:26,179 INFO L225 Difference]: With dead ends: 712 [2020-12-02 12:14:26,180 INFO L226 Difference]: Without dead ends: 316 [2020-12-02 12:14:26,180 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-02 12:14:26,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2020-12-02 12:14:26,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 316. [2020-12-02 12:14:26,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 316 states. [2020-12-02 12:14:26,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 934 transitions. [2020-12-02 12:14:26,191 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 934 transitions. Word has length 15 [2020-12-02 12:14:26,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:14:26,192 INFO L481 AbstractCegarLoop]: Abstraction has 316 states and 934 transitions. [2020-12-02 12:14:26,192 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-02 12:14:26,192 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 934 transitions. [2020-12-02 12:14:26,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-02 12:14:26,193 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:14:26,193 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:14:26,194 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-02 12:14:26,194 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:14:26,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:14:26,194 INFO L82 PathProgramCache]: Analyzing trace with hash 2113265253, now seen corresponding path program 1 times [2020-12-02 12:14:26,195 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:14:26,195 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231842737] [2020-12-02 12:14:26,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:14:26,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:14:26,245 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 12:14:26,246 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231842737] [2020-12-02 12:14:26,246 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:14:26,246 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:14:26,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496480332] [2020-12-02 12:14:26,247 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:14:26,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:14:26,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:14:26,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:14:26,248 INFO L87 Difference]: Start difference. First operand 316 states and 934 transitions. Second operand 5 states. [2020-12-02 12:14:26,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:14:26,277 INFO L93 Difference]: Finished difference Result 340 states and 974 transitions. [2020-12-02 12:14:26,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-02 12:14:26,278 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-12-02 12:14:26,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:14:26,280 INFO L225 Difference]: With dead ends: 340 [2020-12-02 12:14:26,281 INFO L226 Difference]: Without dead ends: 292 [2020-12-02 12:14:26,281 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-02 12:14:26,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2020-12-02 12:14:26,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 292. [2020-12-02 12:14:26,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 292 states. [2020-12-02 12:14:26,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 846 transitions. [2020-12-02 12:14:26,292 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 846 transitions. Word has length 16 [2020-12-02 12:14:26,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:14:26,292 INFO L481 AbstractCegarLoop]: Abstraction has 292 states and 846 transitions. [2020-12-02 12:14:26,292 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:14:26,292 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 846 transitions. [2020-12-02 12:14:26,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-02 12:14:26,294 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:14:26,294 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:14:26,294 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-02 12:14:26,294 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:14:26,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:14:26,295 INFO L82 PathProgramCache]: Analyzing trace with hash 1420368766, now seen corresponding path program 1 times [2020-12-02 12:14:26,295 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:14:26,295 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51542939] [2020-12-02 12:14:26,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:14:26,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:14:26,368 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 12:14:26,368 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51542939] [2020-12-02 12:14:26,369 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:14:26,369 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-02 12:14:26,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994219728] [2020-12-02 12:14:26,370 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-02 12:14:26,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:14:26,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-02 12:14:26,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-02 12:14:26,371 INFO L87 Difference]: Start difference. First operand 292 states and 846 transitions. Second operand 6 states. [2020-12-02 12:14:26,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:14:26,417 INFO L93 Difference]: Finished difference Result 352 states and 1006 transitions. [2020-12-02 12:14:26,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-02 12:14:26,417 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-12-02 12:14:26,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:14:26,419 INFO L225 Difference]: With dead ends: 352 [2020-12-02 12:14:26,419 INFO L226 Difference]: Without dead ends: 154 [2020-12-02 12:14:26,420 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-02 12:14:26,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-12-02 12:14:26,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2020-12-02 12:14:26,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-12-02 12:14:26,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 410 transitions. [2020-12-02 12:14:26,426 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 410 transitions. Word has length 17 [2020-12-02 12:14:26,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:14:26,427 INFO L481 AbstractCegarLoop]: Abstraction has 154 states and 410 transitions. [2020-12-02 12:14:26,427 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-02 12:14:26,427 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 410 transitions. [2020-12-02 12:14:26,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-02 12:14:26,428 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:14:26,428 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 12:14:26,429 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-02 12:14:26,429 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:14:26,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:14:26,430 INFO L82 PathProgramCache]: Analyzing trace with hash -673573280, now seen corresponding path program 1 times [2020-12-02 12:14:26,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:14:26,430 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170159714] [2020-12-02 12:14:26,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:14:26,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:14:26,490 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 12:14:26,490 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170159714] [2020-12-02 12:14:26,491 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:14:26,491 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-02 12:14:26,491 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549343386] [2020-12-02 12:14:26,491 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-02 12:14:26,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:14:26,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-02 12:14:26,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-02 12:14:26,493 INFO L87 Difference]: Start difference. First operand 154 states and 410 transitions. Second operand 6 states. [2020-12-02 12:14:26,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:14:26,529 INFO L93 Difference]: Finished difference Result 130 states and 334 transitions. [2020-12-02 12:14:26,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-02 12:14:26,530 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-12-02 12:14:26,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:14:26,531 INFO L225 Difference]: With dead ends: 130 [2020-12-02 12:14:26,531 INFO L226 Difference]: Without dead ends: 0 [2020-12-02 12:14:26,531 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-02 12:14:26,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-02 12:14:26,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-02 12:14:26,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-02 12:14:26,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-02 12:14:26,533 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-12-02 12:14:26,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:14:26,533 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-02 12:14:26,533 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-02 12:14:26,533 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-02 12:14:26,534 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-02 12:14:26,534 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-02 12:14:26,538 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 12:14:26 BasicIcfg [2020-12-02 12:14:26,538 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-02 12:14:26,539 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-02 12:14:26,539 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-02 12:14:26,539 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-02 12:14:26,540 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:14:19" (3/4) ... [2020-12-02 12:14:26,544 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-02 12:14:26,551 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-12-02 12:14:26,552 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-12-02 12:14:26,552 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-12-02 12:14:26,552 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2020-12-02 12:14:26,558 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2020-12-02 12:14:26,558 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-02 12:14:26,559 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-02 12:14:26,559 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-02 12:14:26,604 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-12-02 12:14:26,604 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-02 12:14:26,606 INFO L168 Benchmark]: Toolchain (without parser) took 8757.37 ms. Allocated memory was 46.1 MB in the beginning and 213.9 MB in the end (delta: 167.8 MB). Free memory was 29.2 MB in the beginning and 152.4 MB in the end (delta: -123.2 MB). Peak memory consumption was 43.7 MB. Max. memory is 16.1 GB. [2020-12-02 12:14:26,606 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 35.7 MB. Free memory was 18.7 MB in the beginning and 18.7 MB in the end (delta: 39.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 12:14:26,607 INFO L168 Benchmark]: CACSL2BoogieTranslator took 903.30 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 29.0 MB in the beginning and 31.2 MB in the end (delta: -2.1 MB). Peak memory consumption was 11.2 MB. Max. memory is 16.1 GB. [2020-12-02 12:14:26,608 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.36 ms. Allocated memory is still 56.6 MB. Free memory was 31.2 MB in the beginning and 29.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 12:14:26,608 INFO L168 Benchmark]: Boogie Preprocessor took 30.21 ms. Allocated memory is still 56.6 MB. Free memory was 29.1 MB in the beginning and 27.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 12:14:26,609 INFO L168 Benchmark]: RCFGBuilder took 531.32 ms. Allocated memory is still 56.6 MB. Free memory was 27.7 MB in the beginning and 31.4 MB in the end (delta: -3.6 MB). Peak memory consumption was 5.9 MB. Max. memory is 16.1 GB. [2020-12-02 12:14:26,610 INFO L168 Benchmark]: TraceAbstraction took 7165.43 ms. Allocated memory was 56.6 MB in the beginning and 213.9 MB in the end (delta: 157.3 MB). Free memory was 30.9 MB in the beginning and 155.5 MB in the end (delta: -124.6 MB). Peak memory consumption was 30.8 MB. Max. memory is 16.1 GB. [2020-12-02 12:14:26,611 INFO L168 Benchmark]: Witness Printer took 65.63 ms. Allocated memory is still 213.9 MB. Free memory was 154.5 MB in the beginning and 152.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 12:14:26,614 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 35.7 MB. Free memory was 18.7 MB in the beginning and 18.7 MB in the end (delta: 39.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 903.30 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 29.0 MB in the beginning and 31.2 MB in the end (delta: -2.1 MB). Peak memory consumption was 11.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 52.36 ms. Allocated memory is still 56.6 MB. Free memory was 31.2 MB in the beginning and 29.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 30.21 ms. Allocated memory is still 56.6 MB. Free memory was 29.1 MB in the beginning and 27.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 531.32 ms. Allocated memory is still 56.6 MB. Free memory was 27.7 MB in the beginning and 31.4 MB in the end (delta: -3.6 MB). Peak memory consumption was 5.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 7165.43 ms. Allocated memory was 56.6 MB in the beginning and 213.9 MB in the end (delta: 157.3 MB). Free memory was 30.9 MB in the beginning and 155.5 MB in the end (delta: -124.6 MB). Peak memory consumption was 30.8 MB. Max. memory is 16.1 GB. * Witness Printer took 65.63 ms. Allocated memory is still 213.9 MB. Free memory was 154.5 MB in the beginning and 152.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1519 VarBasedMoverChecksPositive, 57 VarBasedMoverChecksNegative, 13 SemBasedMoverChecksPositive, 44 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.5s, 204 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.6s, 102 PlacesBefore, 41 PlacesAfterwards, 91 TransitionsBefore, 29 TransitionsAfterwards, 2064 CoEnabledTransitionPairs, 6 FixpointIterations, 21 TrivialSequentialCompositions, 43 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 1 ChoiceCompositions, 72 TotalNumberOfCompositions, 4338 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, 90 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.9s, OverallIterations: 13, TraceHistogramMax: 1, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.7s, HoareTripleCheckerStatistics: 415 SDtfs, 584 SDslu, 732 SDs, 0 SdLazy, 165 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 70 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1492occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 13 MinimizatonAttempts, 1296 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 180 NumberOfCodeBlocks, 180 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 167 ConstructedInterpolants, 0 QuantifiedInterpolants, 12431 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 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...