./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe019_pso.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 96f16385 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-wmm/safe019_pso.oepc.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c3932b654cbceffb2d315c0a0838aa6d16dcf1e9 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 12:09:36,479 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-02 12:09:36,482 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-02 12:09:36,540 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-02 12:09:36,541 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-02 12:09:36,542 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-02 12:09:36,545 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-02 12:09:36,547 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-02 12:09:36,550 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-02 12:09:36,551 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-02 12:09:36,553 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-02 12:09:36,554 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-02 12:09:36,555 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-02 12:09:36,557 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-02 12:09:36,558 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-02 12:09:36,560 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-02 12:09:36,561 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-02 12:09:36,563 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-02 12:09:36,565 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-02 12:09:36,567 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-02 12:09:36,569 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-02 12:09:36,572 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-02 12:09:36,574 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-02 12:09:36,575 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-02 12:09:36,579 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-02 12:09:36,580 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-02 12:09:36,580 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-02 12:09:36,582 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-02 12:09:36,582 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-02 12:09:36,584 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-02 12:09:36,584 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-02 12:09:36,585 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-02 12:09:36,586 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-02 12:09:36,588 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-02 12:09:36,589 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-02 12:09:36,590 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-02 12:09:36,591 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-02 12:09:36,591 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-02 12:09:36,592 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-02 12:09:36,593 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-02 12:09:36,594 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-02 12:09:36,595 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-02 12:09:36,629 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-02 12:09:36,629 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-02 12:09:36,631 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-02 12:09:36,631 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-02 12:09:36,631 INFO L138 SettingsManager]: * Use SBE=true [2020-12-02 12:09:36,632 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-02 12:09:36,632 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-02 12:09:36,632 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-02 12:09:36,633 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-02 12:09:36,633 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-02 12:09:36,633 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-02 12:09:36,634 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-02 12:09:36,634 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-02 12:09:36,634 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-02 12:09:36,635 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-02 12:09:36,635 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-02 12:09:36,635 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-02 12:09:36,636 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-02 12:09:36,636 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-02 12:09:36,636 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-02 12:09:36,636 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-02 12:09:36,637 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-02 12:09:36,637 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-02 12:09:36,637 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-02 12:09:36,638 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-02 12:09:36,638 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-02 12:09:36,638 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-02 12:09:36,639 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-02 12:09:36,639 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-02 12:09:36,639 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c3932b654cbceffb2d315c0a0838aa6d16dcf1e9 [2020-12-02 12:09:37,088 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-02 12:09:37,116 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-02 12:09:37,120 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-02 12:09:37,121 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-02 12:09:37,122 INFO L275 PluginConnector]: CDTParser initialized [2020-12-02 12:09:37,123 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe019_pso.oepc.i [2020-12-02 12:09:37,209 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03ca793a2/676988b41edd4dd1a8e280fb26c93e11/FLAG158a8c27f [2020-12-02 12:09:37,979 INFO L306 CDTParser]: Found 1 translation units. [2020-12-02 12:09:37,981 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe019_pso.oepc.i [2020-12-02 12:09:38,004 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03ca793a2/676988b41edd4dd1a8e280fb26c93e11/FLAG158a8c27f [2020-12-02 12:09:38,201 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03ca793a2/676988b41edd4dd1a8e280fb26c93e11 [2020-12-02 12:09:38,204 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-02 12:09:38,206 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-02 12:09:38,208 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-02 12:09:38,209 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-02 12:09:38,214 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-02 12:09:38,215 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:09:38" (1/1) ... [2020-12-02 12:09:38,219 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10e2f193 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:09:38, skipping insertion in model container [2020-12-02 12:09:38,219 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:09:38" (1/1) ... [2020-12-02 12:09:38,235 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-02 12:09:38,344 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-02 12:09:38,532 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_pso.oepc.i[950,963] [2020-12-02 12:09:38,818 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-02 12:09:38,834 INFO L203 MainTranslator]: Completed pre-run [2020-12-02 12:09:38,861 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_pso.oepc.i[950,963] [2020-12-02 12:09:38,935 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-02 12:09:39,055 INFO L208 MainTranslator]: Completed translation [2020-12-02 12:09:39,056 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:09:39 WrapperNode [2020-12-02 12:09:39,056 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-02 12:09:39,057 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-02 12:09:39,058 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-02 12:09:39,058 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-02 12:09:39,068 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:09:39" (1/1) ... [2020-12-02 12:09:39,085 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:09:39" (1/1) ... [2020-12-02 12:09:39,112 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-02 12:09:39,113 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-02 12:09:39,114 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-02 12:09:39,114 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-02 12:09:39,125 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:09:39" (1/1) ... [2020-12-02 12:09:39,126 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:09:39" (1/1) ... [2020-12-02 12:09:39,129 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:09:39" (1/1) ... [2020-12-02 12:09:39,130 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:09:39" (1/1) ... [2020-12-02 12:09:39,137 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:09:39" (1/1) ... [2020-12-02 12:09:39,140 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:09:39" (1/1) ... [2020-12-02 12:09:39,142 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:09:39" (1/1) ... [2020-12-02 12:09:39,146 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-02 12:09:39,147 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-02 12:09:39,148 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-02 12:09:39,148 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-02 12:09:39,149 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:09:39" (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 12:09:39,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-02 12:09:39,260 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-02 12:09:39,260 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-02 12:09:39,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-02 12:09:39,261 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-02 12:09:39,261 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-02 12:09:39,261 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-02 12:09:39,261 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-02 12:09:39,262 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-12-02 12:09:39,262 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-12-02 12:09:39,262 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-12-02 12:09:39,262 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-12-02 12:09:39,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-02 12:09:39,263 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-02 12:09:39,263 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-02 12:09:39,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-02 12:09:39,265 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 12:09:39,796 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-02 12:09:39,796 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-02 12:09:39,799 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:09:39 BoogieIcfgContainer [2020-12-02 12:09:39,799 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-02 12:09:39,801 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-02 12:09:39,801 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-02 12:09:39,804 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-02 12:09:39,805 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 12:09:38" (1/3) ... [2020-12-02 12:09:39,806 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c152ed6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:09:39, skipping insertion in model container [2020-12-02 12:09:39,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:09:39" (2/3) ... [2020-12-02 12:09:39,806 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c152ed6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:09:39, skipping insertion in model container [2020-12-02 12:09:39,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:09:39" (3/3) ... [2020-12-02 12:09:39,808 INFO L111 eAbstractionObserver]: Analyzing ICFG safe019_pso.oepc.i [2020-12-02 12:09:39,825 WARN L169 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-02 12:09:39,825 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-02 12:09:39,829 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-02 12:09:39,830 INFO L354 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-02 12:09:39,872 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:39,872 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:39,873 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:39,873 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:39,873 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:39,873 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:39,873 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:39,874 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:39,874 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:39,874 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:39,874 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:39,875 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:39,875 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:39,875 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:39,875 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:39,876 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:39,876 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:39,876 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:39,876 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:39,876 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:39,877 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:39,877 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:39,877 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:39,877 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:39,878 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:39,878 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:39,878 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:39,878 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:39,879 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:39,879 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:39,879 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:39,879 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:39,879 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:39,880 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:39,880 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:39,880 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:39,881 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:39,881 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:39,881 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:39,881 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:39,881 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:39,881 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:39,882 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:39,882 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:39,882 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:39,882 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:39,883 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:39,883 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:39,885 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:39,886 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:39,886 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:39,886 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:39,892 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:39,892 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:39,892 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:39,892 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:39,895 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:39,895 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:39,896 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:39,896 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:39,898 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:39,899 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:39,899 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:39,899 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:09:39,901 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-02 12:09:39,919 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-12-02 12:09:39,941 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-02 12:09:39,941 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-02 12:09:39,941 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-02 12:09:39,941 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-02 12:09:39,942 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-02 12:09:39,942 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-02 12:09:39,942 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-02 12:09:39,942 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-02 12:09:39,957 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-02 12:09:39,959 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 97 places, 86 transitions, 192 flow [2020-12-02 12:09:39,963 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 97 places, 86 transitions, 192 flow [2020-12-02 12:09:39,965 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 97 places, 86 transitions, 192 flow [2020-12-02 12:09:40,025 INFO L129 PetriNetUnfolder]: 2/82 cut-off events. [2020-12-02 12:09:40,025 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-02 12:09:40,030 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 12:09:40,034 INFO L116 LiptonReduction]: Number of co-enabled transitions 1866 [2020-12-02 12:09:43,747 WARN L197 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-12-02 12:09:44,061 WARN L197 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-12-02 12:09:44,173 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-12-02 12:09:44,483 INFO L131 LiptonReduction]: Checked pairs total: 2978 [2020-12-02 12:09:44,484 INFO L133 LiptonReduction]: Total number of compositions: 68 [2020-12-02 12:09:44,493 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 38 places, 25 transitions, 70 flow [2020-12-02 12:09:44,575 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 706 states. [2020-12-02 12:09:44,581 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states. [2020-12-02 12:09:44,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-02 12:09:44,595 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:09:44,597 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:09:44,597 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:09:44,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:09:44,609 INFO L82 PathProgramCache]: Analyzing trace with hash -36259415, now seen corresponding path program 1 times [2020-12-02 12:09:44,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:09:44,622 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762352312] [2020-12-02 12:09:44,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:09:44,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:09:44,904 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 12:09:44,907 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762352312] [2020-12-02 12:09:44,910 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:09:44,910 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-02 12:09:44,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400424296] [2020-12-02 12:09:44,917 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-02 12:09:44,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:09:44,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-02 12:09:44,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-02 12:09:44,944 INFO L87 Difference]: Start difference. First operand 706 states. Second operand 3 states. [2020-12-02 12:09:45,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:09:45,034 INFO L93 Difference]: Finished difference Result 670 states and 2295 transitions. [2020-12-02 12:09:45,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-02 12:09:45,037 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-12-02 12:09:45,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:09:45,073 INFO L225 Difference]: With dead ends: 670 [2020-12-02 12:09:45,073 INFO L226 Difference]: Without dead ends: 526 [2020-12-02 12:09:45,074 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 12:09:45,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2020-12-02 12:09:45,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 526. [2020-12-02 12:09:45,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 526 states. [2020-12-02 12:09:45,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 1743 transitions. [2020-12-02 12:09:45,216 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 1743 transitions. Word has length 10 [2020-12-02 12:09:45,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:09:45,217 INFO L481 AbstractCegarLoop]: Abstraction has 526 states and 1743 transitions. [2020-12-02 12:09:45,217 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-02 12:09:45,218 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 1743 transitions. [2020-12-02 12:09:45,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-02 12:09:45,222 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:09:45,222 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:09:45,223 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-02 12:09:45,223 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:09:45,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:09:45,228 INFO L82 PathProgramCache]: Analyzing trace with hash 1165014530, now seen corresponding path program 1 times [2020-12-02 12:09:45,228 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:09:45,229 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434664951] [2020-12-02 12:09:45,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:09:45,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:09:45,399 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 12:09:45,399 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434664951] [2020-12-02 12:09:45,400 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:09:45,400 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 12:09:45,400 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654078049] [2020-12-02 12:09:45,402 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 12:09:45,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:09:45,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 12:09:45,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:09:45,404 INFO L87 Difference]: Start difference. First operand 526 states and 1743 transitions. Second operand 4 states. [2020-12-02 12:09:45,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:09:45,436 INFO L93 Difference]: Finished difference Result 724 states and 2331 transitions. [2020-12-02 12:09:45,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-02 12:09:45,443 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-02 12:09:45,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:09:45,461 INFO L225 Difference]: With dead ends: 724 [2020-12-02 12:09:45,461 INFO L226 Difference]: Without dead ends: 412 [2020-12-02 12:09:45,462 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 12:09:45,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2020-12-02 12:09:45,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 412. [2020-12-02 12:09:45,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 412 states. [2020-12-02 12:09:45,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 1323 transitions. [2020-12-02 12:09:45,480 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 1323 transitions. Word has length 11 [2020-12-02 12:09:45,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:09:45,480 INFO L481 AbstractCegarLoop]: Abstraction has 412 states and 1323 transitions. [2020-12-02 12:09:45,481 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 12:09:45,481 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 1323 transitions. [2020-12-02 12:09:45,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-02 12:09:45,483 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:09:45,483 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:09:45,483 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-02 12:09:45,484 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:09:45,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:09:45,485 INFO L82 PathProgramCache]: Analyzing trace with hash -485610361, now seen corresponding path program 1 times [2020-12-02 12:09:45,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:09:45,485 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188028733] [2020-12-02 12:09:45,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:09:45,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:09:45,580 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 12:09:45,580 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188028733] [2020-12-02 12:09:45,581 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:09:45,581 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 12:09:45,581 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362521587] [2020-12-02 12:09:45,582 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 12:09:45,582 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:09:45,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 12:09:45,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:09:45,586 INFO L87 Difference]: Start difference. First operand 412 states and 1323 transitions. Second operand 4 states. [2020-12-02 12:09:45,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:09:45,622 INFO L93 Difference]: Finished difference Result 526 states and 1618 transitions. [2020-12-02 12:09:45,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-02 12:09:45,622 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-12-02 12:09:45,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:09:45,627 INFO L225 Difference]: With dead ends: 526 [2020-12-02 12:09:45,627 INFO L226 Difference]: Without dead ends: 478 [2020-12-02 12:09:45,628 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 12:09:45,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2020-12-02 12:09:45,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 418. [2020-12-02 12:09:45,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 418 states. [2020-12-02 12:09:45,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 1306 transitions. [2020-12-02 12:09:45,648 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 1306 transitions. Word has length 12 [2020-12-02 12:09:45,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:09:45,649 INFO L481 AbstractCegarLoop]: Abstraction has 418 states and 1306 transitions. [2020-12-02 12:09:45,650 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 12:09:45,650 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 1306 transitions. [2020-12-02 12:09:45,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-02 12:09:45,656 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:09:45,656 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:09:45,656 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-02 12:09:45,657 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:09:45,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:09:45,661 INFO L82 PathProgramCache]: Analyzing trace with hash -1949399229, now seen corresponding path program 1 times [2020-12-02 12:09:45,662 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:09:45,662 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299655811] [2020-12-02 12:09:45,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:09:45,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:09:45,775 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 12:09:45,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299655811] [2020-12-02 12:09:45,783 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:09:45,783 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:09:45,784 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383243775] [2020-12-02 12:09:45,784 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 12:09:45,785 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:09:45,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 12:09:45,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:09:45,788 INFO L87 Difference]: Start difference. First operand 418 states and 1306 transitions. Second operand 4 states. [2020-12-02 12:09:45,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:09:45,819 INFO L93 Difference]: Finished difference Result 532 states and 1601 transitions. [2020-12-02 12:09:45,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-02 12:09:45,820 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-12-02 12:09:45,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:09:45,830 INFO L225 Difference]: With dead ends: 532 [2020-12-02 12:09:45,831 INFO L226 Difference]: Without dead ends: 412 [2020-12-02 12:09:45,831 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 12:09:45,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2020-12-02 12:09:45,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 376. [2020-12-02 12:09:45,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 376 states. [2020-12-02 12:09:45,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 1137 transitions. [2020-12-02 12:09:45,848 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 1137 transitions. Word has length 13 [2020-12-02 12:09:45,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:09:45,848 INFO L481 AbstractCegarLoop]: Abstraction has 376 states and 1137 transitions. [2020-12-02 12:09:45,848 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 12:09:45,849 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 1137 transitions. [2020-12-02 12:09:45,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-02 12:09:45,850 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:09:45,850 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:09:45,850 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-02 12:09:45,850 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:09:45,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:09:45,851 INFO L82 PathProgramCache]: Analyzing trace with hash -1949381931, now seen corresponding path program 1 times [2020-12-02 12:09:45,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:09:45,853 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850692114] [2020-12-02 12:09:45,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:09:45,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:09:45,935 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 12:09:45,935 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850692114] [2020-12-02 12:09:45,936 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:09:45,936 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 12:09:45,936 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608551475] [2020-12-02 12:09:45,937 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 12:09:45,938 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:09:45,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 12:09:45,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:09:45,940 INFO L87 Difference]: Start difference. First operand 376 states and 1137 transitions. Second operand 4 states. [2020-12-02 12:09:45,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:09:45,966 INFO L93 Difference]: Finished difference Result 526 states and 1530 transitions. [2020-12-02 12:09:45,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-02 12:09:45,967 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-12-02 12:09:45,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:09:45,970 INFO L225 Difference]: With dead ends: 526 [2020-12-02 12:09:45,970 INFO L226 Difference]: Without dead ends: 274 [2020-12-02 12:09:45,971 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 12:09:45,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2020-12-02 12:09:45,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 274. [2020-12-02 12:09:45,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2020-12-02 12:09:45,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 775 transitions. [2020-12-02 12:09:45,981 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 775 transitions. Word has length 13 [2020-12-02 12:09:45,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:09:45,982 INFO L481 AbstractCegarLoop]: Abstraction has 274 states and 775 transitions. [2020-12-02 12:09:45,982 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 12:09:45,982 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 775 transitions. [2020-12-02 12:09:45,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-02 12:09:45,983 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:09:45,983 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:09:45,983 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-02 12:09:45,983 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:09:45,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:09:45,984 INFO L82 PathProgramCache]: Analyzing trace with hash 2123867267, now seen corresponding path program 1 times [2020-12-02 12:09:45,985 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:09:45,985 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477027610] [2020-12-02 12:09:45,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:09:46,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:09:46,115 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 12:09:46,116 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477027610] [2020-12-02 12:09:46,116 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:09:46,117 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 12:09:46,117 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634348251] [2020-12-02 12:09:46,117 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 12:09:46,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:09:46,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 12:09:46,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:09:46,119 INFO L87 Difference]: Start difference. First operand 274 states and 775 transitions. Second operand 4 states. [2020-12-02 12:09:46,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:09:46,157 INFO L93 Difference]: Finished difference Result 345 states and 911 transitions. [2020-12-02 12:09:46,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-02 12:09:46,158 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-12-02 12:09:46,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:09:46,160 INFO L225 Difference]: With dead ends: 345 [2020-12-02 12:09:46,161 INFO L226 Difference]: Without dead ends: 252 [2020-12-02 12:09:46,161 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 12:09:46,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2020-12-02 12:09:46,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 252. [2020-12-02 12:09:46,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2020-12-02 12:09:46,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 675 transitions. [2020-12-02 12:09:46,172 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 675 transitions. Word has length 14 [2020-12-02 12:09:46,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:09:46,172 INFO L481 AbstractCegarLoop]: Abstraction has 252 states and 675 transitions. [2020-12-02 12:09:46,173 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 12:09:46,173 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 675 transitions. [2020-12-02 12:09:46,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-02 12:09:46,174 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:09:46,174 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:09:46,174 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-02 12:09:46,174 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:09:46,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:09:46,175 INFO L82 PathProgramCache]: Analyzing trace with hash 1422134941, now seen corresponding path program 1 times [2020-12-02 12:09:46,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:09:46,175 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558533683] [2020-12-02 12:09:46,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:09:46,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:09:46,294 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 12:09:46,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558533683] [2020-12-02 12:09:46,294 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:09:46,295 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:09:46,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313268948] [2020-12-02 12:09:46,295 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:09:46,296 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:09:46,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:09:46,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:09:46,297 INFO L87 Difference]: Start difference. First operand 252 states and 675 transitions. Second operand 5 states. [2020-12-02 12:09:46,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:09:46,360 INFO L93 Difference]: Finished difference Result 278 states and 685 transitions. [2020-12-02 12:09:46,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-02 12:09:46,361 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-12-02 12:09:46,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:09:46,363 INFO L225 Difference]: With dead ends: 278 [2020-12-02 12:09:46,363 INFO L226 Difference]: Without dead ends: 203 [2020-12-02 12:09:46,364 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 12:09:46,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-12-02 12:09:46,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2020-12-02 12:09:46,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2020-12-02 12:09:46,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 492 transitions. [2020-12-02 12:09:46,372 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 492 transitions. Word has length 15 [2020-12-02 12:09:46,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:09:46,372 INFO L481 AbstractCegarLoop]: Abstraction has 203 states and 492 transitions. [2020-12-02 12:09:46,373 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:09:46,373 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 492 transitions. [2020-12-02 12:09:46,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-02 12:09:46,374 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:09:46,374 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:09:46,374 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-02 12:09:46,375 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:09:46,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:09:46,375 INFO L82 PathProgramCache]: Analyzing trace with hash 1099628631, now seen corresponding path program 1 times [2020-12-02 12:09:46,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:09:46,376 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469840252] [2020-12-02 12:09:46,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:09:46,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:09:46,441 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 12:09:46,442 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469840252] [2020-12-02 12:09:46,442 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:09:46,442 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-02 12:09:46,442 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835109311] [2020-12-02 12:09:46,443 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-02 12:09:46,443 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:09:46,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-02 12:09:46,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-02 12:09:46,444 INFO L87 Difference]: Start difference. First operand 203 states and 492 transitions. Second operand 6 states. [2020-12-02 12:09:46,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:09:46,516 INFO L93 Difference]: Finished difference Result 200 states and 461 transitions. [2020-12-02 12:09:46,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-02 12:09:46,517 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-12-02 12:09:46,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:09:46,519 INFO L225 Difference]: With dead ends: 200 [2020-12-02 12:09:46,519 INFO L226 Difference]: Without dead ends: 162 [2020-12-02 12:09:46,521 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 12:09:46,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-12-02 12:09:46,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2020-12-02 12:09:46,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-12-02 12:09:46,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 375 transitions. [2020-12-02 12:09:46,527 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 375 transitions. Word has length 16 [2020-12-02 12:09:46,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:09:46,527 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 375 transitions. [2020-12-02 12:09:46,528 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-02 12:09:46,528 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 375 transitions. [2020-12-02 12:09:46,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-02 12:09:46,529 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:09:46,529 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 12:09:46,529 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-02 12:09:46,529 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:09:46,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:09:46,530 INFO L82 PathProgramCache]: Analyzing trace with hash 554738786, now seen corresponding path program 1 times [2020-12-02 12:09:46,530 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:09:46,535 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927210055] [2020-12-02 12:09:46,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:09:46,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:09:46,629 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 12:09:46,630 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927210055] [2020-12-02 12:09:46,630 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:09:46,630 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-02 12:09:46,631 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929826613] [2020-12-02 12:09:46,631 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:09:46,632 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:09:46,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:09:46,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:09:46,632 INFO L87 Difference]: Start difference. First operand 162 states and 375 transitions. Second operand 5 states. [2020-12-02 12:09:46,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:09:46,666 INFO L93 Difference]: Finished difference Result 194 states and 439 transitions. [2020-12-02 12:09:46,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-02 12:09:46,667 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-12-02 12:09:46,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:09:46,668 INFO L225 Difference]: With dead ends: 194 [2020-12-02 12:09:46,668 INFO L226 Difference]: Without dead ends: 127 [2020-12-02 12:09:46,668 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 12:09:46,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-12-02 12:09:46,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 125. [2020-12-02 12:09:46,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-12-02 12:09:46,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 265 transitions. [2020-12-02 12:09:46,673 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 265 transitions. Word has length 18 [2020-12-02 12:09:46,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:09:46,674 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 265 transitions. [2020-12-02 12:09:46,674 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:09:46,674 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 265 transitions. [2020-12-02 12:09:46,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-02 12:09:46,674 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:09:46,675 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 12:09:46,675 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-02 12:09:46,675 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:09:46,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:09:46,675 INFO L82 PathProgramCache]: Analyzing trace with hash -780782352, now seen corresponding path program 2 times [2020-12-02 12:09:46,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:09:46,676 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897924446] [2020-12-02 12:09:46,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:09:46,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:09:46,763 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 12:09:46,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897924446] [2020-12-02 12:09:46,764 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:09:46,764 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-02 12:09:46,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281617348] [2020-12-02 12:09:46,764 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-02 12:09:46,764 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:09:46,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-02 12:09:46,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-02 12:09:46,765 INFO L87 Difference]: Start difference. First operand 125 states and 265 transitions. Second operand 7 states. [2020-12-02 12:09:46,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:09:46,836 INFO L93 Difference]: Finished difference Result 120 states and 253 transitions. [2020-12-02 12:09:46,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-02 12:09:46,837 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-12-02 12:09:46,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:09:46,840 INFO L225 Difference]: With dead ends: 120 [2020-12-02 12:09:46,840 INFO L226 Difference]: Without dead ends: 71 [2020-12-02 12:09:46,840 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 12:09:46,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-12-02 12:09:46,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2020-12-02 12:09:46,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-12-02 12:09:46,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 143 transitions. [2020-12-02 12:09:46,843 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 143 transitions. Word has length 18 [2020-12-02 12:09:46,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:09:46,845 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 143 transitions. [2020-12-02 12:09:46,845 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-02 12:09:46,845 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 143 transitions. [2020-12-02 12:09:46,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-02 12:09:46,845 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:09:46,846 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 12:09:46,846 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-02 12:09:46,846 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:09:46,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:09:46,847 INFO L82 PathProgramCache]: Analyzing trace with hash 1285342776, now seen corresponding path program 1 times [2020-12-02 12:09:46,847 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:09:46,847 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184733657] [2020-12-02 12:09:46,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:09:46,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:09:46,917 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 12:09:46,917 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184733657] [2020-12-02 12:09:46,917 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:09:46,917 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:09:46,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127092058] [2020-12-02 12:09:46,918 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 12:09:46,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:09:46,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 12:09:46,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:09:46,920 INFO L87 Difference]: Start difference. First operand 71 states and 143 transitions. Second operand 4 states. [2020-12-02 12:09:46,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:09:46,952 INFO L93 Difference]: Finished difference Result 70 states and 142 transitions. [2020-12-02 12:09:46,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-02 12:09:46,953 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-12-02 12:09:46,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:09:46,954 INFO L225 Difference]: With dead ends: 70 [2020-12-02 12:09:46,954 INFO L226 Difference]: Without dead ends: 0 [2020-12-02 12:09:46,954 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 12:09:46,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-02 12:09:46,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-02 12:09:46,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-02 12:09:46,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-02 12:09:46,955 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2020-12-02 12:09:46,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:09:46,955 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-02 12:09:46,955 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 12:09:46,955 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-02 12:09:46,956 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-02 12:09:46,956 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-02 12:09:46,959 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 12:09:46 BasicIcfg [2020-12-02 12:09:46,960 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-02 12:09:46,960 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-02 12:09:46,960 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-02 12:09:46,960 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-02 12:09:46,961 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:09:39" (3/4) ... [2020-12-02 12:09:46,966 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-02 12:09:46,976 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-12-02 12:09:46,976 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-12-02 12:09:46,976 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-12-02 12:09:46,976 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2020-12-02 12:09:46,984 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2020-12-02 12:09:46,985 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-02 12:09:46,985 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-02 12:09:46,985 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-02 12:09:47,040 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-12-02 12:09:47,040 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-02 12:09:47,042 INFO L168 Benchmark]: Toolchain (without parser) took 8835.55 ms. Allocated memory was 44.0 MB in the beginning and 119.5 MB in the end (delta: 75.5 MB). Free memory was 20.3 MB in the beginning and 42.1 MB in the end (delta: -21.8 MB). Peak memory consumption was 55.5 MB. Max. memory is 16.1 GB. [2020-12-02 12:09:47,042 INFO L168 Benchmark]: CDTParser took 3.32 ms. Allocated memory is still 44.0 MB. Free memory is still 29.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 12:09:47,043 INFO L168 Benchmark]: CACSL2BoogieTranslator took 848.37 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 20.2 MB in the beginning and 32.7 MB in the end (delta: -12.5 MB). Peak memory consumption was 10.6 MB. Max. memory is 16.1 GB. [2020-12-02 12:09:47,043 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.25 ms. Allocated memory is still 54.5 MB. Free memory was 32.7 MB in the beginning and 30.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 12:09:47,044 INFO L168 Benchmark]: Boogie Preprocessor took 33.20 ms. Allocated memory is still 54.5 MB. Free memory was 30.7 MB in the beginning and 29.3 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 12:09:47,044 INFO L168 Benchmark]: RCFGBuilder took 651.76 ms. Allocated memory is still 54.5 MB. Free memory was 29.1 MB in the beginning and 33.2 MB in the end (delta: -4.1 MB). Peak memory consumption was 8.2 MB. Max. memory is 16.1 GB. [2020-12-02 12:09:47,045 INFO L168 Benchmark]: TraceAbstraction took 7159.07 ms. Allocated memory was 54.5 MB in the beginning and 119.5 MB in the end (delta: 65.0 MB). Free memory was 32.6 MB in the beginning and 45.2 MB in the end (delta: -12.6 MB). Peak memory consumption was 51.4 MB. Max. memory is 16.1 GB. [2020-12-02 12:09:47,046 INFO L168 Benchmark]: Witness Printer took 80.38 ms. Allocated memory is still 119.5 MB. Free memory was 45.2 MB in the beginning and 42.1 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-02 12:09:47,049 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 3.32 ms. Allocated memory is still 44.0 MB. Free memory is still 29.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 848.37 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 20.2 MB in the beginning and 32.7 MB in the end (delta: -12.5 MB). Peak memory consumption was 10.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 55.25 ms. Allocated memory is still 54.5 MB. Free memory was 32.7 MB in the beginning and 30.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 33.20 ms. Allocated memory is still 54.5 MB. Free memory was 30.7 MB in the beginning and 29.3 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 651.76 ms. Allocated memory is still 54.5 MB. Free memory was 29.1 MB in the beginning and 33.2 MB in the end (delta: -4.1 MB). Peak memory consumption was 8.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 7159.07 ms. Allocated memory was 54.5 MB in the beginning and 119.5 MB in the end (delta: 65.0 MB). Free memory was 32.6 MB in the beginning and 45.2 MB in the end (delta: -12.6 MB). Peak memory consumption was 51.4 MB. Max. memory is 16.1 GB. * Witness Printer took 80.38 ms. Allocated memory is still 119.5 MB. Free memory was 45.2 MB in the beginning and 42.1 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 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: 0.6s, 75 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 4.5s, 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: 11, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.6s, HoareTripleCheckerStatistics: 237 SDtfs, 286 SDslu, 353 SDs, 0 SdLazy, 210 SolverSat, 52 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 40 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=706occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 98 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 160 NumberOfCodeBlocks, 160 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 149 ConstructedInterpolants, 0 QuantifiedInterpolants, 7771 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...