./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe019_tso.opt.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/safe019_tso.opt.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 94ac66895917d32482f796d3410ed655309b41e1 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 12:09:41,808 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-02 12:09:41,811 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-02 12:09:41,847 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-02 12:09:41,848 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-02 12:09:41,849 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-02 12:09:41,851 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-02 12:09:41,853 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-02 12:09:41,856 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-02 12:09:41,857 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-02 12:09:41,858 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-02 12:09:41,860 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-02 12:09:41,860 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-02 12:09:41,862 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-02 12:09:41,863 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-02 12:09:41,864 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-02 12:09:41,866 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-02 12:09:41,867 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-02 12:09:41,869 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-02 12:09:41,871 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-02 12:09:41,874 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-02 12:09:41,875 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-02 12:09:41,877 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-02 12:09:41,878 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-02 12:09:41,883 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-02 12:09:41,883 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-02 12:09:41,884 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-02 12:09:41,885 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-02 12:09:41,885 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-02 12:09:41,887 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-02 12:09:41,887 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-02 12:09:41,888 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-02 12:09:41,889 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-02 12:09:41,890 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-02 12:09:41,901 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-02 12:09:41,902 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-02 12:09:41,904 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-02 12:09:41,904 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-02 12:09:41,905 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-02 12:09:41,906 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-02 12:09:41,907 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-02 12:09:41,910 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-02 12:09:41,937 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-02 12:09:41,938 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-02 12:09:41,940 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-02 12:09:41,940 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-02 12:09:41,940 INFO L138 SettingsManager]: * Use SBE=true [2020-12-02 12:09:41,941 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-02 12:09:41,941 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-02 12:09:41,942 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-02 12:09:41,942 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-02 12:09:41,942 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-02 12:09:41,942 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-02 12:09:41,943 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-02 12:09:41,943 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-02 12:09:41,943 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-02 12:09:41,944 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-02 12:09:41,944 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-02 12:09:41,944 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-02 12:09:41,945 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-02 12:09:41,945 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-02 12:09:41,945 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-02 12:09:41,945 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-02 12:09:41,946 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-02 12:09:41,946 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-02 12:09:41,946 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-02 12:09:41,946 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-02 12:09:41,947 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-02 12:09:41,947 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-02 12:09:41,947 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-02 12:09:41,947 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-02 12:09:41,948 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 94ac66895917d32482f796d3410ed655309b41e1 [2020-12-02 12:09:42,360 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-02 12:09:42,394 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-02 12:09:42,400 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-02 12:09:42,402 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-02 12:09:42,404 INFO L275 PluginConnector]: CDTParser initialized [2020-12-02 12:09:42,406 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe019_tso.opt.i [2020-12-02 12:09:42,503 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6eb0bf90/c356ca2dc79c4c0e89183ba6d3f5ae9b/FLAG64e785834 [2020-12-02 12:09:43,243 INFO L306 CDTParser]: Found 1 translation units. [2020-12-02 12:09:43,244 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe019_tso.opt.i [2020-12-02 12:09:43,277 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6eb0bf90/c356ca2dc79c4c0e89183ba6d3f5ae9b/FLAG64e785834 [2020-12-02 12:09:43,512 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6eb0bf90/c356ca2dc79c4c0e89183ba6d3f5ae9b [2020-12-02 12:09:43,515 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-02 12:09:43,517 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-02 12:09:43,519 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-02 12:09:43,520 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-02 12:09:43,524 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-02 12:09:43,525 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:09:43" (1/1) ... [2020-12-02 12:09:43,529 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e4cc985 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:09:43, skipping insertion in model container [2020-12-02 12:09:43,529 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:09:43" (1/1) ... [2020-12-02 12:09:43,538 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-02 12:09:43,587 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-02 12:09:43,814 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/safe019_tso.opt.i[949,962] [2020-12-02 12:09:43,975 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-02 12:09:43,985 INFO L203 MainTranslator]: Completed pre-run [2020-12-02 12:09:43,999 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/safe019_tso.opt.i[949,962] [2020-12-02 12:09:44,051 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-02 12:09:44,156 INFO L208 MainTranslator]: Completed translation [2020-12-02 12:09:44,157 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:09:44 WrapperNode [2020-12-02 12:09:44,157 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-02 12:09:44,159 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-02 12:09:44,159 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-02 12:09:44,159 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-02 12:09:44,169 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:09:44" (1/1) ... [2020-12-02 12:09:44,186 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:09:44" (1/1) ... [2020-12-02 12:09:44,216 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-02 12:09:44,217 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-02 12:09:44,217 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-02 12:09:44,217 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-02 12:09:44,228 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:09:44" (1/1) ... [2020-12-02 12:09:44,229 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:09:44" (1/1) ... [2020-12-02 12:09:44,233 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:09:44" (1/1) ... [2020-12-02 12:09:44,233 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:09:44" (1/1) ... [2020-12-02 12:09:44,240 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:09:44" (1/1) ... [2020-12-02 12:09:44,243 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:09:44" (1/1) ... [2020-12-02 12:09:44,246 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:09:44" (1/1) ... [2020-12-02 12:09:44,249 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-02 12:09:44,251 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-02 12:09:44,251 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-02 12:09:44,251 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-02 12:09:44,252 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:09:44" (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 12:09:44,357 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-02 12:09:44,357 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-02 12:09:44,358 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-02 12:09:44,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-02 12:09:44,358 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-02 12:09:44,359 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-02 12:09:44,359 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-02 12:09:44,359 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-02 12:09:44,359 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-12-02 12:09:44,360 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-12-02 12:09:44,360 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-12-02 12:09:44,360 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-12-02 12:09:44,360 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-02 12:09:44,361 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-02 12:09:44,361 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-02 12:09:44,361 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-02 12:09:44,363 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 12:09:44,828 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-02 12:09:44,829 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-02 12:09:44,831 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:09:44 BoogieIcfgContainer [2020-12-02 12:09:44,831 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-02 12:09:44,833 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-02 12:09:44,833 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-02 12:09:44,837 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-02 12:09:44,837 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 12:09:43" (1/3) ... [2020-12-02 12:09:44,838 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bb6ba87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:09:44, skipping insertion in model container [2020-12-02 12:09:44,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:09:44" (2/3) ... [2020-12-02 12:09:44,839 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bb6ba87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:09:44, skipping insertion in model container [2020-12-02 12:09:44,839 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:09:44" (3/3) ... [2020-12-02 12:09:44,841 INFO L111 eAbstractionObserver]: Analyzing ICFG safe019_tso.opt.i [2020-12-02 12:09:44,857 WARN L169 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-02 12:09:44,857 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-02 12:09:44,862 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-02 12:09:44,863 INFO L354 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-02 12:09:44,901 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:44,902 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:44,902 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:44,902 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:44,902 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:44,902 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:44,902 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:44,903 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:44,903 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:44,903 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:44,904 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:44,904 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:44,904 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:44,904 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:44,904 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:44,905 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:44,905 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:44,905 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:44,905 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:44,905 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:44,906 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:44,906 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:44,906 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:44,906 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:44,907 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:44,907 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:44,907 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:44,907 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:44,907 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:44,908 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:44,908 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:44,908 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:44,908 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:44,908 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:44,909 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:44,909 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:44,909 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:44,909 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:44,910 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:44,910 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:44,910 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:44,910 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:44,910 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:44,910 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:44,911 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:44,911 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:44,911 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:44,911 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:44,914 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:44,914 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:44,914 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:44,914 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:44,920 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:44,920 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:44,921 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:44,921 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:44,924 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:44,925 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:44,925 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:44,925 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:44,928 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:44,928 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:44,928 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:44,929 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:44,931 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-02 12:09:44,948 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-12-02 12:09:44,975 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-02 12:09:44,976 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-02 12:09:44,976 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-02 12:09:44,976 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-02 12:09:44,976 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-02 12:09:44,976 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-02 12:09:44,977 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-02 12:09:44,977 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-02 12:09:44,991 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-02 12:09:44,994 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 97 places, 86 transitions, 192 flow [2020-12-02 12:09:44,998 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 97 places, 86 transitions, 192 flow [2020-12-02 12:09:45,000 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 97 places, 86 transitions, 192 flow [2020-12-02 12:09:45,060 INFO L129 PetriNetUnfolder]: 2/82 cut-off events. [2020-12-02 12:09:45,061 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-02 12:09:45,075 INFO L84 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 82 events. 2/82 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 62 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2020-12-02 12:09:45,085 INFO L116 LiptonReduction]: Number of co-enabled transitions 1866 [2020-12-02 12:09:48,945 WARN L197 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-12-02 12:09:49,308 WARN L197 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-12-02 12:09:49,420 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-12-02 12:09:49,718 INFO L131 LiptonReduction]: Checked pairs total: 2978 [2020-12-02 12:09:49,719 INFO L133 LiptonReduction]: Total number of compositions: 68 [2020-12-02 12:09:49,726 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 38 places, 25 transitions, 70 flow [2020-12-02 12:09:49,784 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 706 states. [2020-12-02 12:09:49,786 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states. [2020-12-02 12:09:49,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-02 12:09:49,798 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:09:49,799 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:09:49,799 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:09:49,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:09:49,807 INFO L82 PathProgramCache]: Analyzing trace with hash -36259415, now seen corresponding path program 1 times [2020-12-02 12:09:49,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:09:49,818 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112464143] [2020-12-02 12:09:49,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:09:49,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:09:50,177 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 12:09:50,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112464143] [2020-12-02 12:09:50,179 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:09:50,179 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-02 12:09:50,180 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253848660] [2020-12-02 12:09:50,185 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-02 12:09:50,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:09:50,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-02 12:09:50,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-02 12:09:50,205 INFO L87 Difference]: Start difference. First operand 706 states. Second operand 3 states. [2020-12-02 12:09:50,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:09:50,284 INFO L93 Difference]: Finished difference Result 1072 states and 3535 transitions. [2020-12-02 12:09:50,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-02 12:09:50,287 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-12-02 12:09:50,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:09:50,315 INFO L225 Difference]: With dead ends: 1072 [2020-12-02 12:09:50,315 INFO L226 Difference]: Without dead ends: 745 [2020-12-02 12:09:50,317 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-02 12:09:50,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 745 states. [2020-12-02 12:09:50,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 745 to 679. [2020-12-02 12:09:50,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 679 states. [2020-12-02 12:09:50,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 679 states to 679 states and 2220 transitions. [2020-12-02 12:09:50,435 INFO L78 Accepts]: Start accepts. Automaton has 679 states and 2220 transitions. Word has length 10 [2020-12-02 12:09:50,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:09:50,437 INFO L481 AbstractCegarLoop]: Abstraction has 679 states and 2220 transitions. [2020-12-02 12:09:50,437 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-02 12:09:50,437 INFO L276 IsEmpty]: Start isEmpty. Operand 679 states and 2220 transitions. [2020-12-02 12:09:50,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-02 12:09:50,440 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:09:50,441 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:09:50,441 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-02 12:09:50,441 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:09:50,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:09:50,442 INFO L82 PathProgramCache]: Analyzing trace with hash 1165014530, now seen corresponding path program 1 times [2020-12-02 12:09:50,443 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:09:50,443 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048664301] [2020-12-02 12:09:50,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:09:50,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:09:50,616 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 12:09:50,617 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048664301] [2020-12-02 12:09:50,617 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:09:50,618 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 12:09:50,618 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260762688] [2020-12-02 12:09:50,619 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 12:09:50,620 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:09:50,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 12:09:50,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:09:50,623 INFO L87 Difference]: Start difference. First operand 679 states and 2220 transitions. Second operand 4 states. [2020-12-02 12:09:50,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:09:50,674 INFO L93 Difference]: Finished difference Result 700 states and 2225 transitions. [2020-12-02 12:09:50,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-02 12:09:50,675 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-02 12:09:50,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:09:50,683 INFO L225 Difference]: With dead ends: 700 [2020-12-02 12:09:50,683 INFO L226 Difference]: Without dead ends: 700 [2020-12-02 12:09:50,684 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:09:50,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2020-12-02 12:09:50,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 652. [2020-12-02 12:09:50,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 652 states. [2020-12-02 12:09:50,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 652 states to 652 states and 2109 transitions. [2020-12-02 12:09:50,723 INFO L78 Accepts]: Start accepts. Automaton has 652 states and 2109 transitions. Word has length 11 [2020-12-02 12:09:50,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:09:50,724 INFO L481 AbstractCegarLoop]: Abstraction has 652 states and 2109 transitions. [2020-12-02 12:09:50,724 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 12:09:50,724 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 2109 transitions. [2020-12-02 12:09:50,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-02 12:09:50,727 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:09:50,727 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:09:50,728 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-02 12:09:50,728 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:09:50,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:09:50,729 INFO L82 PathProgramCache]: Analyzing trace with hash -1124043458, now seen corresponding path program 1 times [2020-12-02 12:09:50,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:09:50,729 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654383599] [2020-12-02 12:09:50,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:09:50,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:09:50,811 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 12:09:50,812 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654383599] [2020-12-02 12:09:50,813 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:09:50,813 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 12:09:50,814 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629473890] [2020-12-02 12:09:50,815 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 12:09:50,815 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:09:50,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 12:09:50,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:09:50,818 INFO L87 Difference]: Start difference. First operand 652 states and 2109 transitions. Second operand 4 states. [2020-12-02 12:09:50,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:09:50,848 INFO L93 Difference]: Finished difference Result 664 states and 2099 transitions. [2020-12-02 12:09:50,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-02 12:09:50,849 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-02 12:09:50,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:09:50,855 INFO L225 Difference]: With dead ends: 664 [2020-12-02 12:09:50,856 INFO L226 Difference]: Without dead ends: 664 [2020-12-02 12:09:50,856 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:09:50,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2020-12-02 12:09:50,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 604. [2020-12-02 12:09:50,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 604 states. [2020-12-02 12:09:50,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 1939 transitions. [2020-12-02 12:09:50,882 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 1939 transitions. Word has length 11 [2020-12-02 12:09:50,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:09:50,882 INFO L481 AbstractCegarLoop]: Abstraction has 604 states and 1939 transitions. [2020-12-02 12:09:50,882 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 12:09:50,882 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 1939 transitions. [2020-12-02 12:09:50,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-02 12:09:50,886 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:09:50,886 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:09:50,886 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-02 12:09:50,886 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:09:50,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:09:50,887 INFO L82 PathProgramCache]: Analyzing trace with hash 1755710469, now seen corresponding path program 1 times [2020-12-02 12:09:50,887 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:09:50,887 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11776836] [2020-12-02 12:09:50,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:09:50,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:09:50,964 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 12:09:50,965 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11776836] [2020-12-02 12:09:50,965 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:09:50,965 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:09:50,965 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923668259] [2020-12-02 12:09:50,966 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:09:50,966 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:09:50,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:09:50,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:09:50,967 INFO L87 Difference]: Start difference. First operand 604 states and 1939 transitions. Second operand 5 states. [2020-12-02 12:09:51,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:09:51,006 INFO L93 Difference]: Finished difference Result 856 states and 2659 transitions. [2020-12-02 12:09:51,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-02 12:09:51,006 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-12-02 12:09:51,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:09:51,011 INFO L225 Difference]: With dead ends: 856 [2020-12-02 12:09:51,011 INFO L226 Difference]: Without dead ends: 472 [2020-12-02 12:09:51,012 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-12-02 12:09:51,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2020-12-02 12:09:51,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 436. [2020-12-02 12:09:51,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 436 states. [2020-12-02 12:09:51,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 1375 transitions. [2020-12-02 12:09:51,029 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 1375 transitions. Word has length 12 [2020-12-02 12:09:51,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:09:51,029 INFO L481 AbstractCegarLoop]: Abstraction has 436 states and 1375 transitions. [2020-12-02 12:09:51,029 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:09:51,029 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 1375 transitions. [2020-12-02 12:09:51,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-02 12:09:51,030 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:09:51,031 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:09:51,031 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-02 12:09:51,031 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:09:51,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:09:51,031 INFO L82 PathProgramCache]: Analyzing trace with hash -485610361, now seen corresponding path program 2 times [2020-12-02 12:09:51,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:09:51,032 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833186808] [2020-12-02 12:09:51,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:09:51,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:09:51,075 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 12:09:51,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833186808] [2020-12-02 12:09:51,076 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:09:51,076 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-02 12:09:51,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317935603] [2020-12-02 12:09:51,077 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-02 12:09:51,077 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:09:51,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-02 12:09:51,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-02 12:09:51,078 INFO L87 Difference]: Start difference. First operand 436 states and 1375 transitions. Second operand 3 states. [2020-12-02 12:09:51,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:09:51,096 INFO L93 Difference]: Finished difference Result 418 states and 1306 transitions. [2020-12-02 12:09:51,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-02 12:09:51,097 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-12-02 12:09:51,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:09:51,101 INFO L225 Difference]: With dead ends: 418 [2020-12-02 12:09:51,101 INFO L226 Difference]: Without dead ends: 418 [2020-12-02 12:09:51,102 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-02 12:09:51,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2020-12-02 12:09:51,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 418. [2020-12-02 12:09:51,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 418 states. [2020-12-02 12:09:51,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 1306 transitions. [2020-12-02 12:09:51,120 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 1306 transitions. Word has length 12 [2020-12-02 12:09:51,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:09:51,120 INFO L481 AbstractCegarLoop]: Abstraction has 418 states and 1306 transitions. [2020-12-02 12:09:51,120 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-02 12:09:51,120 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 1306 transitions. [2020-12-02 12:09:51,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-02 12:09:51,121 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:09:51,122 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:09:51,122 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-02 12:09:51,122 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:09:51,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:09:51,123 INFO L82 PathProgramCache]: Analyzing trace with hash -1949399229, now seen corresponding path program 1 times [2020-12-02 12:09:51,123 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:09:51,123 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576347913] [2020-12-02 12:09:51,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:09:51,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:09:51,172 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 12:09:51,173 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576347913] [2020-12-02 12:09:51,173 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:09:51,173 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:09:51,173 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293728603] [2020-12-02 12:09:51,174 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 12:09:51,174 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:09:51,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 12:09:51,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:09:51,175 INFO L87 Difference]: Start difference. First operand 418 states and 1306 transitions. Second operand 4 states. [2020-12-02 12:09:51,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:09:51,204 INFO L93 Difference]: Finished difference Result 532 states and 1601 transitions. [2020-12-02 12:09:51,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-02 12:09:51,205 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-12-02 12:09:51,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:09:51,209 INFO L225 Difference]: With dead ends: 532 [2020-12-02 12:09:51,209 INFO L226 Difference]: Without dead ends: 412 [2020-12-02 12:09:51,209 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:09:51,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2020-12-02 12:09:51,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 376. [2020-12-02 12:09:51,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 376 states. [2020-12-02 12:09:51,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 1137 transitions. [2020-12-02 12:09:51,225 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 1137 transitions. Word has length 13 [2020-12-02 12:09:51,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:09:51,226 INFO L481 AbstractCegarLoop]: Abstraction has 376 states and 1137 transitions. [2020-12-02 12:09:51,226 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 12:09:51,226 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 1137 transitions. [2020-12-02 12:09:51,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-02 12:09:51,227 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:09:51,227 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:09:51,227 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-02 12:09:51,228 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:09:51,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:09:51,228 INFO L82 PathProgramCache]: Analyzing trace with hash -1949381931, now seen corresponding path program 1 times [2020-12-02 12:09:51,228 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:09:51,229 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663816150] [2020-12-02 12:09:51,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:09:51,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:09:51,269 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 12:09:51,270 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663816150] [2020-12-02 12:09:51,270 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:09:51,270 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 12:09:51,270 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605456283] [2020-12-02 12:09:51,271 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 12:09:51,271 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:09:51,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 12:09:51,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:09:51,272 INFO L87 Difference]: Start difference. First operand 376 states and 1137 transitions. Second operand 4 states. [2020-12-02 12:09:51,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:09:51,295 INFO L93 Difference]: Finished difference Result 526 states and 1530 transitions. [2020-12-02 12:09:51,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-02 12:09:51,296 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-12-02 12:09:51,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:09:51,298 INFO L225 Difference]: With dead ends: 526 [2020-12-02 12:09:51,298 INFO L226 Difference]: Without dead ends: 274 [2020-12-02 12:09:51,299 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 12:09:51,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2020-12-02 12:09:51,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 274. [2020-12-02 12:09:51,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2020-12-02 12:09:51,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 775 transitions. [2020-12-02 12:09:51,308 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 775 transitions. Word has length 13 [2020-12-02 12:09:51,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:09:51,309 INFO L481 AbstractCegarLoop]: Abstraction has 274 states and 775 transitions. [2020-12-02 12:09:51,309 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 12:09:51,309 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 775 transitions. [2020-12-02 12:09:51,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-02 12:09:51,310 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:09:51,310 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:09:51,310 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-02 12:09:51,310 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:09:51,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:09:51,311 INFO L82 PathProgramCache]: Analyzing trace with hash 2123867267, now seen corresponding path program 1 times [2020-12-02 12:09:51,311 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:09:51,311 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882366328] [2020-12-02 12:09:51,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:09:51,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:09:51,369 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 12:09:51,370 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882366328] [2020-12-02 12:09:51,370 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:09:51,370 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 12:09:51,370 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551923588] [2020-12-02 12:09:51,371 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 12:09:51,371 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:09:51,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 12:09:51,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:09:51,372 INFO L87 Difference]: Start difference. First operand 274 states and 775 transitions. Second operand 4 states. [2020-12-02 12:09:51,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:09:51,416 INFO L93 Difference]: Finished difference Result 345 states and 911 transitions. [2020-12-02 12:09:51,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-02 12:09:51,417 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-12-02 12:09:51,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:09:51,419 INFO L225 Difference]: With dead ends: 345 [2020-12-02 12:09:51,419 INFO L226 Difference]: Without dead ends: 252 [2020-12-02 12:09:51,420 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 12:09:51,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2020-12-02 12:09:51,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 252. [2020-12-02 12:09:51,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2020-12-02 12:09:51,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 675 transitions. [2020-12-02 12:09:51,429 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 675 transitions. Word has length 14 [2020-12-02 12:09:51,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:09:51,430 INFO L481 AbstractCegarLoop]: Abstraction has 252 states and 675 transitions. [2020-12-02 12:09:51,430 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 12:09:51,430 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 675 transitions. [2020-12-02 12:09:51,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-02 12:09:51,431 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:09:51,431 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:09:51,431 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-02 12:09:51,432 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:09:51,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:09:51,432 INFO L82 PathProgramCache]: Analyzing trace with hash 1422134941, now seen corresponding path program 1 times [2020-12-02 12:09:51,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:09:51,433 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149885896] [2020-12-02 12:09:51,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:09:51,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:09:51,501 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 12:09:51,501 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149885896] [2020-12-02 12:09:51,502 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:09:51,502 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:09:51,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069422007] [2020-12-02 12:09:51,503 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:09:51,503 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:09:51,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:09:51,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:09:51,504 INFO L87 Difference]: Start difference. First operand 252 states and 675 transitions. Second operand 5 states. [2020-12-02 12:09:51,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:09:51,557 INFO L93 Difference]: Finished difference Result 278 states and 685 transitions. [2020-12-02 12:09:51,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-02 12:09:51,558 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-12-02 12:09:51,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:09:51,559 INFO L225 Difference]: With dead ends: 278 [2020-12-02 12:09:51,560 INFO L226 Difference]: Without dead ends: 203 [2020-12-02 12:09:51,560 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-02 12:09:51,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-12-02 12:09:51,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2020-12-02 12:09:51,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2020-12-02 12:09:51,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 492 transitions. [2020-12-02 12:09:51,567 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 492 transitions. Word has length 15 [2020-12-02 12:09:51,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:09:51,568 INFO L481 AbstractCegarLoop]: Abstraction has 203 states and 492 transitions. [2020-12-02 12:09:51,568 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:09:51,568 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 492 transitions. [2020-12-02 12:09:51,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-02 12:09:51,569 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:09:51,569 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:09:51,569 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-02 12:09:51,569 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:09:51,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:09:51,570 INFO L82 PathProgramCache]: Analyzing trace with hash 1099628631, now seen corresponding path program 1 times [2020-12-02 12:09:51,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:09:51,571 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599932843] [2020-12-02 12:09:51,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:09:51,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:09:51,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 12:09:51,630 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599932843] [2020-12-02 12:09:51,631 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:09:51,631 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-02 12:09:51,631 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851421011] [2020-12-02 12:09:51,631 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-02 12:09:51,632 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:09:51,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-02 12:09:51,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-02 12:09:51,633 INFO L87 Difference]: Start difference. First operand 203 states and 492 transitions. Second operand 6 states. [2020-12-02 12:09:51,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:09:51,692 INFO L93 Difference]: Finished difference Result 200 states and 461 transitions. [2020-12-02 12:09:51,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-02 12:09:51,693 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-12-02 12:09:51,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:09:51,694 INFO L225 Difference]: With dead ends: 200 [2020-12-02 12:09:51,694 INFO L226 Difference]: Without dead ends: 162 [2020-12-02 12:09:51,695 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-12-02 12:09:51,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-12-02 12:09:51,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2020-12-02 12:09:51,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-12-02 12:09:51,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 375 transitions. [2020-12-02 12:09:51,700 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 375 transitions. Word has length 16 [2020-12-02 12:09:51,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:09:51,701 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 375 transitions. [2020-12-02 12:09:51,701 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-02 12:09:51,701 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 375 transitions. [2020-12-02 12:09:51,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-02 12:09:51,702 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:09:51,702 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 12:09:51,702 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-02 12:09:51,703 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:09:51,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:09:51,703 INFO L82 PathProgramCache]: Analyzing trace with hash 554738786, now seen corresponding path program 1 times [2020-12-02 12:09:51,704 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:09:51,704 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708408552] [2020-12-02 12:09:51,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:09:51,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:09:51,756 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 12:09:51,757 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708408552] [2020-12-02 12:09:51,757 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:09:51,757 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-02 12:09:51,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163226472] [2020-12-02 12:09:51,758 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:09:51,758 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:09:51,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:09:51,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:09:51,759 INFO L87 Difference]: Start difference. First operand 162 states and 375 transitions. Second operand 5 states. [2020-12-02 12:09:51,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:09:51,791 INFO L93 Difference]: Finished difference Result 194 states and 439 transitions. [2020-12-02 12:09:51,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-02 12:09:51,791 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-12-02 12:09:51,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:09:51,793 INFO L225 Difference]: With dead ends: 194 [2020-12-02 12:09:51,793 INFO L226 Difference]: Without dead ends: 127 [2020-12-02 12:09:51,793 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-12-02 12:09:51,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-12-02 12:09:51,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 125. [2020-12-02 12:09:51,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-12-02 12:09:51,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 265 transitions. [2020-12-02 12:09:51,798 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 265 transitions. Word has length 18 [2020-12-02 12:09:51,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:09:51,798 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 265 transitions. [2020-12-02 12:09:51,799 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:09:51,799 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 265 transitions. [2020-12-02 12:09:51,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-02 12:09:51,799 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:09:51,800 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 12:09:51,800 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-02 12:09:51,800 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:09:51,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:09:51,801 INFO L82 PathProgramCache]: Analyzing trace with hash -780782352, now seen corresponding path program 2 times [2020-12-02 12:09:51,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:09:51,801 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828675345] [2020-12-02 12:09:51,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:09:51,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:09:51,869 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 12:09:51,869 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828675345] [2020-12-02 12:09:51,870 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:09:51,870 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-02 12:09:51,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405457946] [2020-12-02 12:09:51,871 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-02 12:09:51,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:09:51,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-02 12:09:51,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-02 12:09:51,872 INFO L87 Difference]: Start difference. First operand 125 states and 265 transitions. Second operand 7 states. [2020-12-02 12:09:51,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:09:51,951 INFO L93 Difference]: Finished difference Result 120 states and 253 transitions. [2020-12-02 12:09:51,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-02 12:09:51,952 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-12-02 12:09:51,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:09:51,953 INFO L225 Difference]: With dead ends: 120 [2020-12-02 12:09:51,953 INFO L226 Difference]: Without dead ends: 71 [2020-12-02 12:09:51,954 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-12-02 12:09:51,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-12-02 12:09:51,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2020-12-02 12:09:51,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-12-02 12:09:51,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 143 transitions. [2020-12-02 12:09:51,956 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 143 transitions. Word has length 18 [2020-12-02 12:09:51,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:09:51,957 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 143 transitions. [2020-12-02 12:09:51,957 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-02 12:09:51,957 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 143 transitions. [2020-12-02 12:09:51,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-02 12:09:51,958 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:09:51,958 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:09:51,958 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-02 12:09:51,959 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:09:51,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:09:51,959 INFO L82 PathProgramCache]: Analyzing trace with hash 1285342776, now seen corresponding path program 1 times [2020-12-02 12:09:51,959 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:09:51,960 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676476199] [2020-12-02 12:09:51,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:09:51,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:09:52,008 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 12:09:52,008 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676476199] [2020-12-02 12:09:52,009 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:09:52,009 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:09:52,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281752788] [2020-12-02 12:09:52,010 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 12:09:52,010 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:09:52,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 12:09:52,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:09:52,011 INFO L87 Difference]: Start difference. First operand 71 states and 143 transitions. Second operand 4 states. [2020-12-02 12:09:52,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:09:52,034 INFO L93 Difference]: Finished difference Result 70 states and 142 transitions. [2020-12-02 12:09:52,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-02 12:09:52,035 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-12-02 12:09:52,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:09:52,035 INFO L225 Difference]: With dead ends: 70 [2020-12-02 12:09:52,035 INFO L226 Difference]: Without dead ends: 0 [2020-12-02 12:09:52,036 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:09:52,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-02 12:09:52,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-02 12:09:52,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-02 12:09:52,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-02 12:09:52,037 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2020-12-02 12:09:52,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:09:52,037 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-02 12:09:52,037 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 12:09:52,038 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-02 12:09:52,038 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-02 12:09:52,038 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-02 12:09:52,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 12:09:52 BasicIcfg [2020-12-02 12:09:52,042 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-02 12:09:52,043 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-02 12:09:52,043 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-02 12:09:52,043 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-02 12:09:52,044 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:09:44" (3/4) ... [2020-12-02 12:09:52,048 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-02 12:09:52,055 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-12-02 12:09:52,056 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-12-02 12:09:52,056 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-12-02 12:09:52,056 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2020-12-02 12:09:52,061 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2020-12-02 12:09:52,062 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-02 12:09:52,062 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-02 12:09:52,062 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-02 12:09:52,104 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-12-02 12:09:52,105 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-02 12:09:52,106 INFO L168 Benchmark]: Toolchain (without parser) took 8589.01 ms. Allocated memory was 50.3 MB in the beginning and 132.1 MB in the end (delta: 81.8 MB). Free memory was 26.5 MB in the beginning and 88.9 MB in the end (delta: -62.5 MB). Peak memory consumption was 20.1 MB. Max. memory is 16.1 GB. [2020-12-02 12:09:52,107 INFO L168 Benchmark]: CDTParser took 0.41 ms. Allocated memory is still 37.7 MB. Free memory was 20.0 MB in the beginning and 19.9 MB in the end (delta: 42.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 12:09:52,108 INFO L168 Benchmark]: CACSL2BoogieTranslator took 638.63 ms. Allocated memory is still 50.3 MB. Free memory was 26.3 MB in the beginning and 20.4 MB in the end (delta: 5.9 MB). Peak memory consumption was 10.2 MB. Max. memory is 16.1 GB. [2020-12-02 12:09:52,108 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.47 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 20.2 MB in the beginning and 43.4 MB in the end (delta: -23.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 16.1 GB. [2020-12-02 12:09:52,109 INFO L168 Benchmark]: Boogie Preprocessor took 32.95 ms. Allocated memory is still 60.8 MB. Free memory was 43.4 MB in the beginning and 41.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 12:09:52,110 INFO L168 Benchmark]: RCFGBuilder took 580.77 ms. Allocated memory is still 60.8 MB. Free memory was 41.9 MB in the beginning and 34.0 MB in the end (delta: 7.9 MB). Peak memory consumption was 15.7 MB. Max. memory is 16.1 GB. [2020-12-02 12:09:52,110 INFO L168 Benchmark]: TraceAbstraction took 7208.82 ms. Allocated memory was 60.8 MB in the beginning and 132.1 MB in the end (delta: 71.3 MB). Free memory was 33.5 MB in the beginning and 92.1 MB in the end (delta: -58.5 MB). Peak memory consumption was 13.1 MB. Max. memory is 16.1 GB. [2020-12-02 12:09:52,111 INFO L168 Benchmark]: Witness Printer took 62.48 ms. Allocated memory is still 132.1 MB. Free memory was 92.1 MB in the beginning and 88.9 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 12:09:52,115 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41 ms. Allocated memory is still 37.7 MB. Free memory was 20.0 MB in the beginning and 19.9 MB in the end (delta: 42.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 638.63 ms. Allocated memory is still 50.3 MB. Free memory was 26.3 MB in the beginning and 20.4 MB in the end (delta: 5.9 MB). Peak memory consumption was 10.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 57.47 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 20.2 MB in the beginning and 43.4 MB in the end (delta: -23.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 32.95 ms. Allocated memory is still 60.8 MB. Free memory was 43.4 MB in the beginning and 41.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 580.77 ms. Allocated memory is still 60.8 MB. Free memory was 41.9 MB in the beginning and 34.0 MB in the end (delta: 7.9 MB). Peak memory consumption was 15.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 7208.82 ms. Allocated memory was 60.8 MB in the beginning and 132.1 MB in the end (delta: 71.3 MB). Free memory was 33.5 MB in the beginning and 92.1 MB in the end (delta: -58.5 MB). Peak memory consumption was 13.1 MB. Max. memory is 16.1 GB. * Witness Printer took 62.48 ms. Allocated memory is still 132.1 MB. Free memory was 92.1 MB in the beginning and 88.9 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1172 VarBasedMoverChecksPositive, 55 VarBasedMoverChecksNegative, 17 SemBasedMoverChecksPositive, 38 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.5s, 75 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 4.7s, 97 PlacesBefore, 38 PlacesAfterwards, 86 TransitionsBefore, 25 TransitionsAfterwards, 1866 CoEnabledTransitionPairs, 6 FixpointIterations, 18 TrivialSequentialCompositions, 46 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 2 ChoiceCompositions, 68 TotalNumberOfCompositions, 2978 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, 85 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 7.0s, OverallIterations: 13, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.8s, HoareTripleCheckerStatistics: 283 SDtfs, 313 SDslu, 410 SDs, 0 SdLazy, 234 SolverSat, 58 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=706occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 13 MinimizatonAttempts, 248 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 183 NumberOfCodeBlocks, 183 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 170 ConstructedInterpolants, 0 QuantifiedInterpolants, 10828 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...