./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe031_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 69874e26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_bd42ae15-d86d-40f8-afbd-f9eca95cf06f/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_bd42ae15-d86d-40f8-afbd-f9eca95cf06f/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_bd42ae15-d86d-40f8-afbd-f9eca95cf06f/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_bd42ae15-d86d-40f8-afbd-f9eca95cf06f/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe031_tso.opt.i -s /tmp/vcloud-vcloud-master/worker/run_dir_bd42ae15-d86d-40f8-afbd-f9eca95cf06f/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_bd42ae15-d86d-40f8-afbd-f9eca95cf06f/bin/uautomizer --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 6c6aa79d63d892d225c1a390dc2b1239fe052036 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-69874e2 [2020-12-01 14:54:18,028 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 14:54:18,030 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 14:54:18,089 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 14:54:18,104 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 14:54:18,106 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 14:54:18,108 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 14:54:18,111 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 14:54:18,113 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 14:54:18,115 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 14:54:18,117 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 14:54:18,119 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 14:54:18,120 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 14:54:18,121 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 14:54:18,123 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 14:54:18,124 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 14:54:18,126 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 14:54:18,127 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 14:54:18,133 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 14:54:18,145 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 14:54:18,148 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 14:54:18,156 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 14:54:18,158 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 14:54:18,159 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 14:54:18,163 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 14:54:18,163 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 14:54:18,164 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 14:54:18,165 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 14:54:18,166 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 14:54:18,167 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 14:54:18,168 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 14:54:18,172 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 14:54:18,175 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 14:54:18,176 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 14:54:18,178 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 14:54:18,178 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 14:54:18,179 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 14:54:18,180 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 14:54:18,180 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 14:54:18,182 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 14:54:18,183 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 14:54:18,186 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_bd42ae15-d86d-40f8-afbd-f9eca95cf06f/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-01 14:54:18,230 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 14:54:18,230 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 14:54:18,232 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 14:54:18,232 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 14:54:18,232 INFO L138 SettingsManager]: * Use SBE=true [2020-12-01 14:54:18,233 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 14:54:18,233 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 14:54:18,233 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-01 14:54:18,234 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 14:54:18,234 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 14:54:18,234 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-01 14:54:18,234 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 14:54:18,235 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-01 14:54:18,235 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 14:54:18,235 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 14:54:18,235 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 14:54:18,236 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-01 14:54:18,236 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 14:54:18,236 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-01 14:54:18,236 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 14:54:18,237 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-01 14:54:18,237 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 14:54:18,237 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 14:54:18,238 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 14:54:18,238 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-01 14:54:18,238 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-01 14:54:18,238 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-01 14:54:18,239 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-01 14:54:18,239 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-01 14:54:18,239 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:/tmp/vcloud-vcloud-master/worker/run_dir_bd42ae15-d86d-40f8-afbd-f9eca95cf06f/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_bd42ae15-d86d-40f8-afbd-f9eca95cf06f/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6c6aa79d63d892d225c1a390dc2b1239fe052036 [2020-12-01 14:54:18,570 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 14:54:18,605 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 14:54:18,611 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 14:54:18,613 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 14:54:18,615 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 14:54:18,617 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_bd42ae15-d86d-40f8-afbd-f9eca95cf06f/bin/uautomizer/../../sv-benchmarks/c/pthread-wmm/safe031_tso.opt.i [2020-12-01 14:54:18,717 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_bd42ae15-d86d-40f8-afbd-f9eca95cf06f/bin/uautomizer/data/017e915ea/aa83f7ee3f074fb798d728ac3e780e2e/FLAG080ffb868 [2020-12-01 14:54:19,361 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 14:54:19,361 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_bd42ae15-d86d-40f8-afbd-f9eca95cf06f/sv-benchmarks/c/pthread-wmm/safe031_tso.opt.i [2020-12-01 14:54:19,399 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_bd42ae15-d86d-40f8-afbd-f9eca95cf06f/bin/uautomizer/data/017e915ea/aa83f7ee3f074fb798d728ac3e780e2e/FLAG080ffb868 [2020-12-01 14:54:19,586 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_bd42ae15-d86d-40f8-afbd-f9eca95cf06f/bin/uautomizer/data/017e915ea/aa83f7ee3f074fb798d728ac3e780e2e [2020-12-01 14:54:19,589 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 14:54:19,591 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 14:54:19,600 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 14:54:19,600 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 14:54:19,603 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 14:54:19,604 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 02:54:19" (1/1) ... [2020-12-01 14:54:19,606 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49cbcd0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:54:19, skipping insertion in model container [2020-12-01 14:54:19,606 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 02:54:19" (1/1) ... [2020-12-01 14:54:19,614 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 14:54:19,685 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 14:54:20,153 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 14:54:20,162 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 14:54:20,205 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 14:54:20,287 INFO L208 MainTranslator]: Completed translation [2020-12-01 14:54:20,287 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:54:20 WrapperNode [2020-12-01 14:54:20,287 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 14:54:20,289 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 14:54:20,289 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 14:54:20,289 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 14:54:20,298 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:54:20" (1/1) ... [2020-12-01 14:54:20,314 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:54:20" (1/1) ... [2020-12-01 14:54:20,335 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 14:54:20,336 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 14:54:20,336 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 14:54:20,336 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 14:54:20,345 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:54:20" (1/1) ... [2020-12-01 14:54:20,345 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:54:20" (1/1) ... [2020-12-01 14:54:20,349 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:54:20" (1/1) ... [2020-12-01 14:54:20,349 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:54:20" (1/1) ... [2020-12-01 14:54:20,355 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:54:20" (1/1) ... [2020-12-01 14:54:20,358 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:54:20" (1/1) ... [2020-12-01 14:54:20,360 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:54:20" (1/1) ... [2020-12-01 14:54:20,363 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 14:54:20,364 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 14:54:20,364 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 14:54:20,365 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 14:54:20,366 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:54:20" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bd42ae15-d86d-40f8-afbd-f9eca95cf06f/bin/uautomizer/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 [2020-12-01 14:54:20,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-01 14:54:20,462 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-01 14:54:20,462 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 14:54:20,463 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-01 14:54:20,463 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-01 14:54:20,463 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-01 14:54:20,463 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-01 14:54:20,463 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-01 14:54:20,464 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-12-01 14:54:20,464 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-12-01 14:54:20,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-01 14:54:20,464 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-01 14:54:20,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 14:54:20,465 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 14:54:20,467 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-12-01 14:54:20,809 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 14:54:20,809 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-12-01 14:54:20,811 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 02:54:20 BoogieIcfgContainer [2020-12-01 14:54:20,811 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 14:54:20,830 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-01 14:54:20,830 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-01 14:54:20,833 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-01 14:54:20,834 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 02:54:19" (1/3) ... [2020-12-01 14:54:20,834 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f7b5db8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 02:54:20, skipping insertion in model container [2020-12-01 14:54:20,835 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:54:20" (2/3) ... [2020-12-01 14:54:20,835 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f7b5db8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 02:54:20, skipping insertion in model container [2020-12-01 14:54:20,835 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 02:54:20" (3/3) ... [2020-12-01 14:54:20,837 INFO L111 eAbstractionObserver]: Analyzing ICFG safe031_tso.opt.i [2020-12-01 14:54:20,852 WARN L169 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-01 14:54:20,853 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-01 14:54:20,856 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-01 14:54:20,857 INFO L354 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-01 14:54:20,933 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:20,933 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:20,934 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:20,934 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:20,934 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:20,934 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:20,935 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:20,935 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:20,935 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:20,936 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:20,936 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:20,936 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:20,937 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:20,937 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:20,937 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:20,938 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:20,938 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:20,938 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:20,938 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:20,938 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:20,939 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:20,939 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:20,940 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:20,940 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:20,940 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:20,941 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:20,941 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:20,941 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:20,941 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:20,942 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:20,942 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:20,942 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:20,943 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:20,943 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:20,943 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:20,943 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:20,946 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:20,953 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:20,954 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:20,954 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:20,962 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:20,963 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:20,965 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:20,965 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:20,974 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:20,974 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:20,975 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:20,975 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 14:54:20,977 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-01 14:54:20,989 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-01 14:54:21,013 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-01 14:54:21,016 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-01 14:54:21,017 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-01 14:54:21,017 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-01 14:54:21,017 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-01 14:54:21,017 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-01 14:54:21,018 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-01 14:54:21,018 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-01 14:54:21,041 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-01 14:54:21,044 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 85 places, 78 transitions, 171 flow [2020-12-01 14:54:21,049 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 85 places, 78 transitions, 171 flow [2020-12-01 14:54:21,051 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 85 places, 78 transitions, 171 flow [2020-12-01 14:54:21,133 INFO L129 PetriNetUnfolder]: 3/75 cut-off events. [2020-12-01 14:54:21,133 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-01 14:54:21,137 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 75 events. 3/75 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 57 event pairs, 0 based on Foata normal form. 0/71 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2020-12-01 14:54:21,141 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2020-12-01 14:54:24,410 WARN L197 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-12-01 14:54:24,720 WARN L197 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-12-01 14:54:24,838 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-12-01 14:54:24,855 INFO L131 LiptonReduction]: Checked pairs total: 2814 [2020-12-01 14:54:24,855 INFO L133 LiptonReduction]: Total number of compositions: 71 [2020-12-01 14:54:24,863 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-12-01 14:54:24,895 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-12-01 14:54:24,898 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-12-01 14:54:24,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-01 14:54:24,905 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 14:54:24,906 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 14:54:24,907 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 14:54:24,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:54:24,913 INFO L82 PathProgramCache]: Analyzing trace with hash 515529937, now seen corresponding path program 1 times [2020-12-01 14:54:24,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 14:54:24,924 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358318595] [2020-12-01 14:54:24,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 14:54:25,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:54:25,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 14:54:25,189 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358318595] [2020-12-01 14:54:25,190 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 14:54:25,191 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-01 14:54:25,191 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105373807] [2020-12-01 14:54:25,198 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-01 14:54:25,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 14:54:25,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-01 14:54:25,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-01 14:54:25,221 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-12-01 14:54:25,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 14:54:25,280 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-12-01 14:54:25,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-01 14:54:25,281 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-12-01 14:54:25,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 14:54:25,304 INFO L225 Difference]: With dead ends: 362 [2020-12-01 14:54:25,305 INFO L226 Difference]: Without dead ends: 298 [2020-12-01 14:54:25,312 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-01 14:54:25,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-12-01 14:54:25,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-12-01 14:54:25,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-12-01 14:54:25,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-12-01 14:54:25,419 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-12-01 14:54:25,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 14:54:25,423 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-12-01 14:54:25,423 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-01 14:54:25,423 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-12-01 14:54:25,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-01 14:54:25,428 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 14:54:25,428 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 14:54:25,429 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-01 14:54:25,429 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 14:54:25,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:54:25,434 INFO L82 PathProgramCache]: Analyzing trace with hash -1198450655, now seen corresponding path program 1 times [2020-12-01 14:54:25,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 14:54:25,435 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505765324] [2020-12-01 14:54:25,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 14:54:25,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:54:25,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 14:54:25,582 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505765324] [2020-12-01 14:54:25,582 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 14:54:25,582 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-01 14:54:25,583 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128481176] [2020-12-01 14:54:25,584 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 14:54:25,584 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 14:54:25,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 14:54:25,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 14:54:25,586 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 4 states. [2020-12-01 14:54:25,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 14:54:25,631 INFO L93 Difference]: Finished difference Result 346 states and 956 transitions. [2020-12-01 14:54:25,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-01 14:54:25,632 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-12-01 14:54:25,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 14:54:25,640 INFO L225 Difference]: With dead ends: 346 [2020-12-01 14:54:25,641 INFO L226 Difference]: Without dead ends: 282 [2020-12-01 14:54:25,642 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 [2020-12-01 14:54:25,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-12-01 14:54:25,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 282. [2020-12-01 14:54:25,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 282 states. [2020-12-01 14:54:25,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 804 transitions. [2020-12-01 14:54:25,690 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 804 transitions. Word has length 9 [2020-12-01 14:54:25,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 14:54:25,691 INFO L481 AbstractCegarLoop]: Abstraction has 282 states and 804 transitions. [2020-12-01 14:54:25,691 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 14:54:25,691 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 804 transitions. [2020-12-01 14:54:25,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-01 14:54:25,693 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 14:54:25,693 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 14:54:25,694 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-01 14:54:25,694 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 14:54:25,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:54:25,694 INFO L82 PathProgramCache]: Analyzing trace with hash 1501217071, now seen corresponding path program 1 times [2020-12-01 14:54:25,695 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 14:54:25,695 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967478330] [2020-12-01 14:54:25,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 14:54:25,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:54:25,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 14:54:25,832 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967478330] [2020-12-01 14:54:25,832 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 14:54:25,832 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-01 14:54:25,833 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60741139] [2020-12-01 14:54:25,833 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 14:54:25,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 14:54:25,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 14:54:25,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 14:54:25,834 INFO L87 Difference]: Start difference. First operand 282 states and 804 transitions. Second operand 4 states. [2020-12-01 14:54:25,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 14:54:25,863 INFO L93 Difference]: Finished difference Result 326 states and 888 transitions. [2020-12-01 14:54:25,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-01 14:54:25,863 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-12-01 14:54:25,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 14:54:25,866 INFO L225 Difference]: With dead ends: 326 [2020-12-01 14:54:25,866 INFO L226 Difference]: Without dead ends: 270 [2020-12-01 14:54:25,867 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 [2020-12-01 14:54:25,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2020-12-01 14:54:25,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 270. [2020-12-01 14:54:25,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2020-12-01 14:54:25,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 760 transitions. [2020-12-01 14:54:25,893 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 760 transitions. Word has length 10 [2020-12-01 14:54:25,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 14:54:25,893 INFO L481 AbstractCegarLoop]: Abstraction has 270 states and 760 transitions. [2020-12-01 14:54:25,893 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 14:54:25,893 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 760 transitions. [2020-12-01 14:54:25,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-01 14:54:25,895 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 14:54:25,895 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 14:54:25,896 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-01 14:54:25,896 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 14:54:25,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:54:25,896 INFO L82 PathProgramCache]: Analyzing trace with hash -1186186363, now seen corresponding path program 1 times [2020-12-01 14:54:25,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 14:54:25,904 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874053156] [2020-12-01 14:54:25,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 14:54:25,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:54:26,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 14:54:26,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874053156] [2020-12-01 14:54:26,024 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 14:54:26,025 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 14:54:26,025 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349404899] [2020-12-01 14:54:26,025 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 14:54:26,025 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 14:54:26,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 14:54:26,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 14:54:26,027 INFO L87 Difference]: Start difference. First operand 270 states and 760 transitions. Second operand 4 states. [2020-12-01 14:54:26,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 14:54:26,082 INFO L93 Difference]: Finished difference Result 273 states and 687 transitions. [2020-12-01 14:54:26,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-01 14:54:26,082 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-01 14:54:26,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 14:54:26,085 INFO L225 Difference]: With dead ends: 273 [2020-12-01 14:54:26,085 INFO L226 Difference]: Without dead ends: 209 [2020-12-01 14:54:26,085 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 [2020-12-01 14:54:26,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2020-12-01 14:54:26,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2020-12-01 14:54:26,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2020-12-01 14:54:26,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 516 transitions. [2020-12-01 14:54:26,099 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 516 transitions. Word has length 11 [2020-12-01 14:54:26,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 14:54:26,099 INFO L481 AbstractCegarLoop]: Abstraction has 209 states and 516 transitions. [2020-12-01 14:54:26,100 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 14:54:26,100 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 516 transitions. [2020-12-01 14:54:26,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-01 14:54:26,111 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 14:54:26,111 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 14:54:26,112 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-01 14:54:26,112 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 14:54:26,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:54:26,114 INFO L82 PathProgramCache]: Analyzing trace with hash -497822471, now seen corresponding path program 1 times [2020-12-01 14:54:26,114 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 14:54:26,118 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100892806] [2020-12-01 14:54:26,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 14:54:26,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:54:26,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 14:54:26,207 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100892806] [2020-12-01 14:54:26,207 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 14:54:26,207 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 14:54:26,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738171202] [2020-12-01 14:54:26,208 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 14:54:26,208 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 14:54:26,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 14:54:26,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 14:54:26,212 INFO L87 Difference]: Start difference. First operand 209 states and 516 transitions. Second operand 4 states. [2020-12-01 14:54:26,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 14:54:26,241 INFO L93 Difference]: Finished difference Result 303 states and 706 transitions. [2020-12-01 14:54:26,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-01 14:54:26,242 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-12-01 14:54:26,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 14:54:26,244 INFO L225 Difference]: With dead ends: 303 [2020-12-01 14:54:26,245 INFO L226 Difference]: Without dead ends: 223 [2020-12-01 14:54:26,245 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 [2020-12-01 14:54:26,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2020-12-01 14:54:26,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 199. [2020-12-01 14:54:26,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2020-12-01 14:54:26,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 470 transitions. [2020-12-01 14:54:26,258 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 470 transitions. Word has length 12 [2020-12-01 14:54:26,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 14:54:26,259 INFO L481 AbstractCegarLoop]: Abstraction has 199 states and 470 transitions. [2020-12-01 14:54:26,259 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 14:54:26,259 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 470 transitions. [2020-12-01 14:54:26,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-01 14:54:26,267 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 14:54:26,267 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 14:54:26,267 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-01 14:54:26,267 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 14:54:26,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:54:26,268 INFO L82 PathProgramCache]: Analyzing trace with hash -319232189, now seen corresponding path program 1 times [2020-12-01 14:54:26,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 14:54:26,268 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619034690] [2020-12-01 14:54:26,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 14:54:26,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:54:26,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 14:54:26,409 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619034690] [2020-12-01 14:54:26,411 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 14:54:26,411 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-01 14:54:26,411 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412925641] [2020-12-01 14:54:26,412 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-01 14:54:26,412 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 14:54:26,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-01 14:54:26,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-01 14:54:26,414 INFO L87 Difference]: Start difference. First operand 199 states and 470 transitions. Second operand 5 states. [2020-12-01 14:54:26,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 14:54:26,470 INFO L93 Difference]: Finished difference Result 171 states and 364 transitions. [2020-12-01 14:54:26,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-01 14:54:26,471 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-12-01 14:54:26,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 14:54:26,473 INFO L225 Difference]: With dead ends: 171 [2020-12-01 14:54:26,473 INFO L226 Difference]: Without dead ends: 134 [2020-12-01 14:54:26,473 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-01 14:54:26,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-12-01 14:54:26,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2020-12-01 14:54:26,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-12-01 14:54:26,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 280 transitions. [2020-12-01 14:54:26,480 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 280 transitions. Word has length 13 [2020-12-01 14:54:26,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 14:54:26,480 INFO L481 AbstractCegarLoop]: Abstraction has 134 states and 280 transitions. [2020-12-01 14:54:26,480 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-01 14:54:26,480 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 280 transitions. [2020-12-01 14:54:26,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-01 14:54:26,482 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 14:54:26,482 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 14:54:26,482 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-01 14:54:26,483 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 14:54:26,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:54:26,485 INFO L82 PathProgramCache]: Analyzing trace with hash 447753789, now seen corresponding path program 1 times [2020-12-01 14:54:26,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 14:54:26,485 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577550319] [2020-12-01 14:54:26,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 14:54:26,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:54:26,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 14:54:26,581 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577550319] [2020-12-01 14:54:26,582 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 14:54:26,582 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 14:54:26,582 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974444167] [2020-12-01 14:54:26,582 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 14:54:26,583 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 14:54:26,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 14:54:26,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 14:54:26,584 INFO L87 Difference]: Start difference. First operand 134 states and 280 transitions. Second operand 4 states. [2020-12-01 14:54:26,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 14:54:26,605 INFO L93 Difference]: Finished difference Result 177 states and 347 transitions. [2020-12-01 14:54:26,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-01 14:54:26,606 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-12-01 14:54:26,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 14:54:26,607 INFO L225 Difference]: With dead ends: 177 [2020-12-01 14:54:26,607 INFO L226 Difference]: Without dead ends: 130 [2020-12-01 14:54:26,608 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-01 14:54:26,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-12-01 14:54:26,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 126. [2020-12-01 14:54:26,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-12-01 14:54:26,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 248 transitions. [2020-12-01 14:54:26,613 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 248 transitions. Word has length 15 [2020-12-01 14:54:26,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 14:54:26,614 INFO L481 AbstractCegarLoop]: Abstraction has 126 states and 248 transitions. [2020-12-01 14:54:26,614 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 14:54:26,614 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 248 transitions. [2020-12-01 14:54:26,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-01 14:54:26,615 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 14:54:26,615 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 14:54:26,615 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-01 14:54:26,615 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 14:54:26,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:54:26,616 INFO L82 PathProgramCache]: Analyzing trace with hash 144030791, now seen corresponding path program 1 times [2020-12-01 14:54:26,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 14:54:26,616 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844938224] [2020-12-01 14:54:26,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 14:54:26,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:54:26,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 14:54:26,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844938224] [2020-12-01 14:54:26,734 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 14:54:26,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-01 14:54:26,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058750768] [2020-12-01 14:54:26,734 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-01 14:54:26,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 14:54:26,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-01 14:54:26,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-01 14:54:26,736 INFO L87 Difference]: Start difference. First operand 126 states and 248 transitions. Second operand 6 states. [2020-12-01 14:54:26,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 14:54:26,788 INFO L93 Difference]: Finished difference Result 113 states and 220 transitions. [2020-12-01 14:54:26,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-01 14:54:26,792 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-12-01 14:54:26,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 14:54:26,792 INFO L225 Difference]: With dead ends: 113 [2020-12-01 14:54:26,793 INFO L226 Difference]: Without dead ends: 37 [2020-12-01 14:54:26,794 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-12-01 14:54:26,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-12-01 14:54:26,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-12-01 14:54:26,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-12-01 14:54:26,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 57 transitions. [2020-12-01 14:54:26,797 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 57 transitions. Word has length 15 [2020-12-01 14:54:26,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 14:54:26,797 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 57 transitions. [2020-12-01 14:54:26,797 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-01 14:54:26,797 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 57 transitions. [2020-12-01 14:54:26,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-01 14:54:26,798 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 14:54:26,798 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 14:54:26,798 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-01 14:54:26,798 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 14:54:26,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:54:26,799 INFO L82 PathProgramCache]: Analyzing trace with hash -1289085181, now seen corresponding path program 1 times [2020-12-01 14:54:26,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 14:54:26,800 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083912146] [2020-12-01 14:54:26,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 14:54:26,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:54:26,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 14:54:26,889 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083912146] [2020-12-01 14:54:26,889 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 14:54:26,889 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-01 14:54:26,890 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958766966] [2020-12-01 14:54:26,891 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-01 14:54:26,891 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 14:54:26,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-01 14:54:26,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-01 14:54:26,893 INFO L87 Difference]: Start difference. First operand 37 states and 57 transitions. Second operand 5 states. [2020-12-01 14:54:26,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 14:54:26,917 INFO L93 Difference]: Finished difference Result 36 states and 56 transitions. [2020-12-01 14:54:26,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-01 14:54:26,918 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-12-01 14:54:26,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 14:54:26,918 INFO L225 Difference]: With dead ends: 36 [2020-12-01 14:54:26,918 INFO L226 Difference]: Without dead ends: 0 [2020-12-01 14:54:26,919 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-01 14:54:26,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-01 14:54:26,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-01 14:54:26,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-01 14:54:26,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-01 14:54:26,920 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-12-01 14:54:26,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 14:54:26,920 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-01 14:54:26,921 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-01 14:54:26,921 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-01 14:54:26,921 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-01 14:54:26,921 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-01 14:54:26,925 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 02:54:26 BasicIcfg [2020-12-01 14:54:26,925 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-01 14:54:26,926 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 14:54:26,926 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 14:54:26,926 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 14:54:26,927 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 02:54:20" (3/4) ... [2020-12-01 14:54:26,931 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-01 14:54:26,938 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-12-01 14:54:26,939 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-12-01 14:54:26,939 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-12-01 14:54:26,949 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-12-01 14:54:26,950 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-01 14:54:26,950 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-01 14:54:26,950 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-01 14:54:27,007 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_bd42ae15-d86d-40f8-afbd-f9eca95cf06f/bin/uautomizer/witness.graphml [2020-12-01 14:54:27,008 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 14:54:27,009 INFO L168 Benchmark]: Toolchain (without parser) took 7417.79 ms. Allocated memory was 83.9 MB in the beginning and 146.8 MB in the end (delta: 62.9 MB). Free memory was 51.8 MB in the beginning and 53.3 MB in the end (delta: -1.5 MB). Peak memory consumption was 60.3 MB. Max. memory is 16.1 GB. [2020-12-01 14:54:27,010 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 67.1 MB. Free memory was 29.5 MB in the beginning and 29.5 MB in the end (delta: 33.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 14:54:27,010 INFO L168 Benchmark]: CACSL2BoogieTranslator took 687.96 ms. Allocated memory is still 83.9 MB. Free memory was 51.6 MB in the beginning and 41.8 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-01 14:54:27,011 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.64 ms. Allocated memory is still 83.9 MB. Free memory was 41.4 MB in the beginning and 39.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 14:54:27,011 INFO L168 Benchmark]: Boogie Preprocessor took 27.57 ms. Allocated memory is still 83.9 MB. Free memory was 39.7 MB in the beginning and 38.4 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 14:54:27,012 INFO L168 Benchmark]: RCFGBuilder took 447.39 ms. Allocated memory is still 83.9 MB. Free memory was 38.4 MB in the beginning and 52.8 MB in the end (delta: -14.5 MB). Peak memory consumption was 16.4 MB. Max. memory is 16.1 GB. [2020-12-01 14:54:27,012 INFO L168 Benchmark]: TraceAbstraction took 6095.62 ms. Allocated memory was 83.9 MB in the beginning and 146.8 MB in the end (delta: 62.9 MB). Free memory was 52.3 MB in the beginning and 56.4 MB in the end (delta: -4.1 MB). Peak memory consumption was 58.9 MB. Max. memory is 16.1 GB. [2020-12-01 14:54:27,013 INFO L168 Benchmark]: Witness Printer took 82.05 ms. Allocated memory is still 146.8 MB. Free memory was 56.4 MB in the beginning and 53.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 14:54:27,016 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 67.1 MB. Free memory was 29.5 MB in the beginning and 29.5 MB in the end (delta: 33.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 687.96 ms. Allocated memory is still 83.9 MB. Free memory was 51.6 MB in the beginning and 41.8 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 46.64 ms. Allocated memory is still 83.9 MB. Free memory was 41.4 MB in the beginning and 39.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 27.57 ms. Allocated memory is still 83.9 MB. Free memory was 39.7 MB in the beginning and 38.4 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 447.39 ms. Allocated memory is still 83.9 MB. Free memory was 38.4 MB in the beginning and 52.8 MB in the end (delta: -14.5 MB). Peak memory consumption was 16.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6095.62 ms. Allocated memory was 83.9 MB in the beginning and 146.8 MB in the end (delta: 62.9 MB). Free memory was 52.3 MB in the beginning and 56.4 MB in the end (delta: -4.1 MB). Peak memory consumption was 58.9 MB. Max. memory is 16.1 GB. * Witness Printer took 82.05 ms. Allocated memory is still 146.8 MB. Free memory was 56.4 MB in the beginning and 53.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 947 VarBasedMoverChecksPositive, 39 VarBasedMoverChecksNegative, 10 SemBasedMoverChecksPositive, 29 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 72 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.8s, 85 PlacesBefore, 32 PlacesAfterwards, 78 TransitionsBefore, 23 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 6 FixpointIterations, 17 TrivialSequentialCompositions, 42 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 2 ChoiceCompositions, 71 TotalNumberOfCompositions, 2814 MoverChecksTotal - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.9s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.8s, HoareTripleCheckerStatistics: 212 SDtfs, 166 SDslu, 311 SDs, 0 SdLazy, 117 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 38 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred 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, 9 MinimizatonAttempts, 28 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 111 NumberOfCodeBlocks, 111 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 102 ConstructedInterpolants, 0 QuantifiedInterpolants, 3039 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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...