./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread/stack_longer-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_3a2e4f25-cd25-46fa-a4dc-799b51c3744f/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_3a2e4f25-cd25-46fa-a4dc-799b51c3744f/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_3a2e4f25-cd25-46fa-a4dc-799b51c3744f/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_3a2e4f25-cd25-46fa-a4dc-799b51c3744f/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/stack_longer-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_3a2e4f25-cd25-46fa-a4dc-799b51c3744f/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_3a2e4f25-cd25-46fa-a4dc-799b51c3744f/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1891bb638db5c84e8fa01d5309bc212f15b49e23 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_3a2e4f25-cd25-46fa-a4dc-799b51c3744f/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_3a2e4f25-cd25-46fa-a4dc-799b51c3744f/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_3a2e4f25-cd25-46fa-a4dc-799b51c3744f/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_3a2e4f25-cd25-46fa-a4dc-799b51c3744f/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/stack_longer-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_3a2e4f25-cd25-46fa-a4dc-799b51c3744f/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_3a2e4f25-cd25-46fa-a4dc-799b51c3744f/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1891bb638db5c84e8fa01d5309bc212f15b49e23 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-11-15 20:26:21,142 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 20:26:21,144 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 20:26:21,155 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 20:26:21,155 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 20:26:21,156 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 20:26:21,158 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 20:26:21,159 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 20:26:21,161 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 20:26:21,162 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 20:26:21,163 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 20:26:21,164 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 20:26:21,164 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 20:26:21,165 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 20:26:21,166 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 20:26:21,167 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 20:26:21,168 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 20:26:21,169 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 20:26:21,170 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 20:26:21,172 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 20:26:21,173 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 20:26:21,174 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 20:26:21,175 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 20:26:21,176 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 20:26:21,178 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 20:26:21,178 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 20:26:21,179 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 20:26:21,183 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 20:26:21,185 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 20:26:21,186 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 20:26:21,187 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 20:26:21,187 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 20:26:21,188 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 20:26:21,189 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 20:26:21,189 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 20:26:21,191 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 20:26:21,192 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 20:26:21,192 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 20:26:21,192 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 20:26:21,193 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 20:26:21,196 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 20:26:21,197 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_3a2e4f25-cd25-46fa-a4dc-799b51c3744f/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-15 20:26:21,214 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 20:26:21,214 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 20:26:21,215 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 20:26:21,216 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 20:26:21,216 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 20:26:21,216 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 20:26:21,216 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-15 20:26:21,217 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-15 20:26:21,217 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-15 20:26:21,217 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 20:26:21,218 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-15 20:26:21,218 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-15 20:26:21,219 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-15 20:26:21,219 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-15 20:26:21,219 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-15 20:26:21,219 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 20:26:21,220 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-15 20:26:21,220 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 20:26:21,220 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 20:26:21,220 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-15 20:26:21,221 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-15 20:26:21,221 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 20:26:21,221 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 20:26:21,221 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-15 20:26:21,222 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-15 20:26:21,222 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-15 20:26:21,222 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-15 20:26:21,223 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-15 20:26:21,223 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_3a2e4f25-cd25-46fa-a4dc-799b51c3744f/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(__VERIFIER_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 -> 1891bb638db5c84e8fa01d5309bc212f15b49e23 [2019-11-15 20:26:21,269 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 20:26:21,279 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 20:26:21,293 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 20:26:21,294 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 20:26:21,294 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 20:26:21,295 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_3a2e4f25-cd25-46fa-a4dc-799b51c3744f/bin/uautomizer/../../sv-benchmarks/c/pthread/stack_longer-1.i [2019-11-15 20:26:21,350 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3a2e4f25-cd25-46fa-a4dc-799b51c3744f/bin/uautomizer/data/4d4237506/7f14ee5b126742288147612a5faf7f89/FLAGfbc34b09a [2019-11-15 20:26:21,857 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 20:26:21,858 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_3a2e4f25-cd25-46fa-a4dc-799b51c3744f/sv-benchmarks/c/pthread/stack_longer-1.i [2019-11-15 20:26:21,881 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3a2e4f25-cd25-46fa-a4dc-799b51c3744f/bin/uautomizer/data/4d4237506/7f14ee5b126742288147612a5faf7f89/FLAGfbc34b09a [2019-11-15 20:26:22,364 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_3a2e4f25-cd25-46fa-a4dc-799b51c3744f/bin/uautomizer/data/4d4237506/7f14ee5b126742288147612a5faf7f89 [2019-11-15 20:26:22,367 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 20:26:22,368 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-15 20:26:22,369 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 20:26:22,370 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 20:26:22,377 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 20:26:22,377 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 08:26:22" (1/1) ... [2019-11-15 20:26:22,379 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62066543 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:26:22, skipping insertion in model container [2019-11-15 20:26:22,379 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 08:26:22" (1/1) ... [2019-11-15 20:26:22,384 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 20:26:22,435 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 20:26:22,892 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 20:26:22,911 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 20:26:22,953 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 20:26:23,124 INFO L192 MainTranslator]: Completed translation [2019-11-15 20:26:23,124 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:26:23 WrapperNode [2019-11-15 20:26:23,125 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 20:26:23,126 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-15 20:26:23,126 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-15 20:26:23,126 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-15 20:26:23,134 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:26:23" (1/1) ... [2019-11-15 20:26:23,169 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:26:23" (1/1) ... [2019-11-15 20:26:23,206 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-15 20:26:23,208 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 20:26:23,208 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 20:26:23,208 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 20:26:23,217 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:26:23" (1/1) ... [2019-11-15 20:26:23,217 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:26:23" (1/1) ... [2019-11-15 20:26:23,237 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:26:23" (1/1) ... [2019-11-15 20:26:23,237 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:26:23" (1/1) ... [2019-11-15 20:26:23,245 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:26:23" (1/1) ... [2019-11-15 20:26:23,249 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:26:23" (1/1) ... [2019-11-15 20:26:23,260 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:26:23" (1/1) ... [2019-11-15 20:26:23,266 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 20:26:23,267 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 20:26:23,267 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 20:26:23,267 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 20:26:23,268 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:26:23" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3a2e4f25-cd25-46fa-a4dc-799b51c3744f/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 [2019-11-15 20:26:23,340 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2019-11-15 20:26:23,340 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2019-11-15 20:26:23,340 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2019-11-15 20:26:23,340 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2019-11-15 20:26:23,341 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-15 20:26:23,341 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-15 20:26:23,342 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-15 20:26:23,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-15 20:26:23,342 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2019-11-15 20:26:23,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-15 20:26:23,343 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 20:26:23,343 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 20:26:23,344 WARN L202 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-11-15 20:26:23,829 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 20:26:23,829 INFO L284 CfgBuilder]: Removed 24 assume(true) statements. [2019-11-15 20:26:23,830 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 08:26:23 BoogieIcfgContainer [2019-11-15 20:26:23,831 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 20:26:23,831 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-15 20:26:23,832 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-15 20:26:23,834 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-15 20:26:23,834 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.11 08:26:22" (1/3) ... [2019-11-15 20:26:23,835 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f02d01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 08:26:23, skipping insertion in model container [2019-11-15 20:26:23,835 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:26:23" (2/3) ... [2019-11-15 20:26:23,837 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f02d01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 08:26:23, skipping insertion in model container [2019-11-15 20:26:23,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 08:26:23" (3/3) ... [2019-11-15 20:26:23,841 INFO L109 eAbstractionObserver]: Analyzing ICFG stack_longer-1.i [2019-11-15 20:26:23,896 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:23,896 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:23,896 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:23,897 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:23,897 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:23,897 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:23,897 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:23,898 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:23,898 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:23,898 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:23,898 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:23,898 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#t~nondet43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:23,899 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#t~nondet43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:23,899 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#t~nondet44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:23,899 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:23,899 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#t~nondet44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:23,900 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:23,900 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:23,900 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:23,900 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:23,900 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:23,901 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:23,901 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:23,901 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:23,901 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:23,901 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#t~ret36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:23,901 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:23,902 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:23,902 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:23,902 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:23,903 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:23,903 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:23,903 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:23,904 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:23,904 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:23,904 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:23,904 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:23,904 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:23,905 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#t~ret45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:23,905 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:23,906 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#t~ret36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:23,906 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#t~ret45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:23,908 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#t~ret36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:23,908 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#t~ret45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:23,908 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#t~ret45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:23,909 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:23,909 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:23,909 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#t~ret36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:23,910 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:23,910 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#t~ret45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:23,910 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#t~ret45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:23,911 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#t~ret36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:23,911 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_inc_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:23,911 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_inc_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:23,911 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:23,912 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#t~post42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:23,912 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_inc_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:23,912 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#t~post42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:23,912 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:23,912 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_inc_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:23,913 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#t~post42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:23,913 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:23,915 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:23,915 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:23,915 WARN L315 ript$VariableManager]: TermVariabe Thread1_t2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:23,915 WARN L315 ript$VariableManager]: TermVariabe Thread1_t2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:23,916 WARN L315 ript$VariableManager]: TermVariabe Thread1_t2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:23,916 WARN L315 ript$VariableManager]: TermVariabe Thread1_t2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:23,916 WARN L315 ript$VariableManager]: TermVariabe Thread1_t2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:23,916 WARN L315 ript$VariableManager]: TermVariabe Thread1_t2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:23,917 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:23,917 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:23,917 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_#t~nondet47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:23,918 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_#t~nondet47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:23,918 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:23,918 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:23,919 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:23,919 WARN L315 ript$VariableManager]: TermVariabe Thread1_t2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:23,919 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_#t~post46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:23,920 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~mem41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:23,920 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:23,920 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~nondet38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:23,920 WARN L315 ript$VariableManager]: TermVariabe Thread1_t2_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:23,920 WARN L315 ript$VariableManager]: TermVariabe Thread1_t2_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:23,920 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:23,921 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_#t~post46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:23,921 WARN L315 ript$VariableManager]: TermVariabe Thread1_t2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:23,922 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:23,922 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:23,922 WARN L315 ript$VariableManager]: TermVariabe Thread1_t2_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:23,922 WARN L315 ript$VariableManager]: TermVariabe Thread1_t2_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:23,923 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_#t~post46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:23,923 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:23,923 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:23,923 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:23,924 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:23,924 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:23,924 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:23,925 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:23,925 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:23,928 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:23,928 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~nondet38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:23,929 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_dec_top_#t~post32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:23,929 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:23,929 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_dec_top_#t~post32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:23,930 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:23,930 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_#t~ret48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:23,930 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_dec_top_#t~post32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:23,931 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_#t~ret48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:23,932 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_dec_top_#t~post32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:23,932 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_#t~ret48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:23,932 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_#t~ret48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:23,939 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:23,939 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_#t~ret48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:23,939 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_#t~ret48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:23,939 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:23,940 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:23,940 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:23,940 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:23,940 WARN L315 ript$VariableManager]: TermVariabe Thread1_t2_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:23,940 WARN L315 ript$VariableManager]: TermVariabe Thread1_t2_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:23,940 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:23,940 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~mem41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:23,941 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~mem41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:23,941 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:23,941 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~mem41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:23,941 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:23,955 WARN L141 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-11-15 20:26:23,955 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-15 20:26:23,963 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-11-15 20:26:23,972 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-11-15 20:26:23,988 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-15 20:26:23,988 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-15 20:26:23,988 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-15 20:26:23,988 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 20:26:23,989 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 20:26:23,989 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-15 20:26:23,989 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 20:26:23,989 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-15 20:26:24,000 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 129 places, 137 transitions [2019-11-15 20:26:24,271 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 6504 states. [2019-11-15 20:26:24,273 INFO L276 IsEmpty]: Start isEmpty. Operand 6504 states. [2019-11-15 20:26:24,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2019-11-15 20:26:24,304 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:26:24,305 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:26:24,307 INFO L410 AbstractCegarLoop]: === Iteration 1 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 20:26:24,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:26:24,312 INFO L82 PathProgramCache]: Analyzing trace with hash -342338667, now seen corresponding path program 1 times [2019-11-15 20:26:24,320 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:26:24,321 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143821964] [2019-11-15 20:26:24,321 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:26:24,321 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:26:24,322 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:26:24,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:26:24,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:26:24,691 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143821964] [2019-11-15 20:26:24,692 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 20:26:24,692 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-15 20:26:24,692 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306577722] [2019-11-15 20:26:24,696 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-15 20:26:24,697 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:26:24,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-15 20:26:24,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 20:26:24,712 INFO L87 Difference]: Start difference. First operand 6504 states. Second operand 3 states. [2019-11-15 20:26:24,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:26:24,898 INFO L93 Difference]: Finished difference Result 9852 states and 26351 transitions. [2019-11-15 20:26:24,899 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-15 20:26:24,900 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 44 [2019-11-15 20:26:24,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:26:25,004 INFO L225 Difference]: With dead ends: 9852 [2019-11-15 20:26:25,004 INFO L226 Difference]: Without dead ends: 9744 [2019-11-15 20:26:25,006 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 20:26:25,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9744 states. [2019-11-15 20:26:25,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9744 to 8274. [2019-11-15 20:26:25,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8274 states. [2019-11-15 20:26:25,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8274 states to 8274 states and 22332 transitions. [2019-11-15 20:26:25,479 INFO L78 Accepts]: Start accepts. Automaton has 8274 states and 22332 transitions. Word has length 44 [2019-11-15 20:26:25,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:26:25,479 INFO L462 AbstractCegarLoop]: Abstraction has 8274 states and 22332 transitions. [2019-11-15 20:26:25,479 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-15 20:26:25,480 INFO L276 IsEmpty]: Start isEmpty. Operand 8274 states and 22332 transitions. [2019-11-15 20:26:25,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2019-11-15 20:26:25,486 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:26:25,486 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:26:25,487 INFO L410 AbstractCegarLoop]: === Iteration 2 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 20:26:25,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:26:25,487 INFO L82 PathProgramCache]: Analyzing trace with hash 1911074676, now seen corresponding path program 1 times [2019-11-15 20:26:25,488 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:26:25,488 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795571672] [2019-11-15 20:26:25,488 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:26:25,489 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:26:25,489 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:26:25,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:26:25,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:26:25,604 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795571672] [2019-11-15 20:26:25,604 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 20:26:25,604 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-15 20:26:25,604 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307121287] [2019-11-15 20:26:25,606 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-15 20:26:25,606 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:26:25,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-15 20:26:25,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 20:26:25,606 INFO L87 Difference]: Start difference. First operand 8274 states and 22332 transitions. Second operand 3 states. [2019-11-15 20:26:25,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:26:25,683 INFO L93 Difference]: Finished difference Result 7695 states and 20467 transitions. [2019-11-15 20:26:25,684 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-15 20:26:25,684 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 48 [2019-11-15 20:26:25,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:26:25,749 INFO L225 Difference]: With dead ends: 7695 [2019-11-15 20:26:25,750 INFO L226 Difference]: Without dead ends: 7554 [2019-11-15 20:26:25,753 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 20:26:25,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7554 states. [2019-11-15 20:26:25,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7554 to 7326. [2019-11-15 20:26:25,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7326 states. [2019-11-15 20:26:25,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7326 states to 7326 states and 19606 transitions. [2019-11-15 20:26:25,991 INFO L78 Accepts]: Start accepts. Automaton has 7326 states and 19606 transitions. Word has length 48 [2019-11-15 20:26:25,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:26:25,992 INFO L462 AbstractCegarLoop]: Abstraction has 7326 states and 19606 transitions. [2019-11-15 20:26:25,992 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-15 20:26:25,993 INFO L276 IsEmpty]: Start isEmpty. Operand 7326 states and 19606 transitions. [2019-11-15 20:26:25,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-11-15 20:26:25,998 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:26:25,998 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:26:25,998 INFO L410 AbstractCegarLoop]: === Iteration 3 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 20:26:25,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:26:25,999 INFO L82 PathProgramCache]: Analyzing trace with hash -38415710, now seen corresponding path program 1 times [2019-11-15 20:26:26,000 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:26:26,003 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571888393] [2019-11-15 20:26:26,003 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:26:26,004 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:26:26,004 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:26:26,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:26:26,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:26:26,094 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571888393] [2019-11-15 20:26:26,094 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 20:26:26,094 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-15 20:26:26,094 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518945058] [2019-11-15 20:26:26,095 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-15 20:26:26,095 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:26:26,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-15 20:26:26,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-15 20:26:26,096 INFO L87 Difference]: Start difference. First operand 7326 states and 19606 transitions. Second operand 4 states. [2019-11-15 20:26:26,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:26:26,194 INFO L93 Difference]: Finished difference Result 10191 states and 27209 transitions. [2019-11-15 20:26:26,194 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-15 20:26:26,194 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2019-11-15 20:26:26,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:26:26,220 INFO L225 Difference]: With dead ends: 10191 [2019-11-15 20:26:26,220 INFO L226 Difference]: Without dead ends: 10191 [2019-11-15 20:26:26,221 INFO L600 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 [2019-11-15 20:26:26,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10191 states. [2019-11-15 20:26:26,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10191 to 7650. [2019-11-15 20:26:26,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7650 states. [2019-11-15 20:26:26,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7650 states to 7650 states and 20473 transitions. [2019-11-15 20:26:26,545 INFO L78 Accepts]: Start accepts. Automaton has 7650 states and 20473 transitions. Word has length 53 [2019-11-15 20:26:26,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:26:26,547 INFO L462 AbstractCegarLoop]: Abstraction has 7650 states and 20473 transitions. [2019-11-15 20:26:26,548 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-15 20:26:26,548 INFO L276 IsEmpty]: Start isEmpty. Operand 7650 states and 20473 transitions. [2019-11-15 20:26:26,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2019-11-15 20:26:26,558 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:26:26,559 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:26:26,559 INFO L410 AbstractCegarLoop]: === Iteration 4 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 20:26:26,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:26:26,559 INFO L82 PathProgramCache]: Analyzing trace with hash 725556748, now seen corresponding path program 1 times [2019-11-15 20:26:26,560 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:26:26,560 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862928858] [2019-11-15 20:26:26,560 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:26:26,560 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:26:26,560 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:26:26,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:26:26,700 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:26:26,701 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862928858] [2019-11-15 20:26:26,701 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [468135548] [2019-11-15 20:26:26,701 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3a2e4f25-cd25-46fa-a4dc-799b51c3744f/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:26:26,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:26:26,840 INFO L256 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-15 20:26:26,850 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 20:26:26,902 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:26:26,902 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 20:26:26,903 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2019-11-15 20:26:26,903 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470752248] [2019-11-15 20:26:26,904 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-15 20:26:26,905 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:26:26,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-15 20:26:26,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-11-15 20:26:26,905 INFO L87 Difference]: Start difference. First operand 7650 states and 20473 transitions. Second operand 7 states. [2019-11-15 20:26:27,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:26:27,057 INFO L93 Difference]: Finished difference Result 11184 states and 29817 transitions. [2019-11-15 20:26:27,057 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-15 20:26:27,058 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 76 [2019-11-15 20:26:27,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:26:27,085 INFO L225 Difference]: With dead ends: 11184 [2019-11-15 20:26:27,085 INFO L226 Difference]: Without dead ends: 11184 [2019-11-15 20:26:27,086 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2019-11-15 20:26:27,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11184 states. [2019-11-15 20:26:27,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11184 to 9714. [2019-11-15 20:26:27,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9714 states. [2019-11-15 20:26:27,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9714 states to 9714 states and 26034 transitions. [2019-11-15 20:26:27,385 INFO L78 Accepts]: Start accepts. Automaton has 9714 states and 26034 transitions. Word has length 76 [2019-11-15 20:26:27,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:26:27,387 INFO L462 AbstractCegarLoop]: Abstraction has 9714 states and 26034 transitions. [2019-11-15 20:26:27,387 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-15 20:26:27,387 INFO L276 IsEmpty]: Start isEmpty. Operand 9714 states and 26034 transitions. [2019-11-15 20:26:27,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2019-11-15 20:26:27,396 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:26:27,396 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:26:27,603 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:26:27,604 INFO L410 AbstractCegarLoop]: === Iteration 5 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 20:26:27,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:26:27,604 INFO L82 PathProgramCache]: Analyzing trace with hash -623299027, now seen corresponding path program 1 times [2019-11-15 20:26:27,605 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:26:27,605 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357825756] [2019-11-15 20:26:27,605 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:26:27,605 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:26:27,605 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:26:27,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:26:27,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:26:27,683 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357825756] [2019-11-15 20:26:27,683 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 20:26:27,683 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-15 20:26:27,683 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777691691] [2019-11-15 20:26:27,684 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-15 20:26:27,684 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:26:27,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-15 20:26:27,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 20:26:27,685 INFO L87 Difference]: Start difference. First operand 9714 states and 26034 transitions. Second operand 3 states. [2019-11-15 20:26:27,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:26:27,733 INFO L93 Difference]: Finished difference Result 4947 states and 12533 transitions. [2019-11-15 20:26:27,734 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-15 20:26:27,734 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2019-11-15 20:26:27,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:26:27,745 INFO L225 Difference]: With dead ends: 4947 [2019-11-15 20:26:27,745 INFO L226 Difference]: Without dead ends: 4947 [2019-11-15 20:26:27,746 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 20:26:27,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4947 states. [2019-11-15 20:26:27,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4947 to 4842. [2019-11-15 20:26:27,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4842 states. [2019-11-15 20:26:27,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4842 states to 4842 states and 12268 transitions. [2019-11-15 20:26:27,841 INFO L78 Accepts]: Start accepts. Automaton has 4842 states and 12268 transitions. Word has length 80 [2019-11-15 20:26:27,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:26:27,841 INFO L462 AbstractCegarLoop]: Abstraction has 4842 states and 12268 transitions. [2019-11-15 20:26:27,841 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-15 20:26:27,841 INFO L276 IsEmpty]: Start isEmpty. Operand 4842 states and 12268 transitions. [2019-11-15 20:26:27,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2019-11-15 20:26:27,849 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:26:27,849 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:26:27,849 INFO L410 AbstractCegarLoop]: === Iteration 6 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 20:26:27,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:26:27,850 INFO L82 PathProgramCache]: Analyzing trace with hash 1152867487, now seen corresponding path program 1 times [2019-11-15 20:26:27,850 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:26:27,850 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105403997] [2019-11-15 20:26:27,850 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:26:27,850 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:26:27,851 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:26:27,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:26:27,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:26:27,992 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105403997] [2019-11-15 20:26:27,992 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 20:26:27,992 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-15 20:26:27,993 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54548978] [2019-11-15 20:26:27,993 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-15 20:26:27,994 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:26:27,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-15 20:26:27,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-15 20:26:27,994 INFO L87 Difference]: Start difference. First operand 4842 states and 12268 transitions. Second operand 7 states. [2019-11-15 20:26:28,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:26:28,186 INFO L93 Difference]: Finished difference Result 6381 states and 16122 transitions. [2019-11-15 20:26:28,187 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-15 20:26:28,187 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 81 [2019-11-15 20:26:28,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:26:28,201 INFO L225 Difference]: With dead ends: 6381 [2019-11-15 20:26:28,201 INFO L226 Difference]: Without dead ends: 6381 [2019-11-15 20:26:28,202 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2019-11-15 20:26:28,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6381 states. [2019-11-15 20:26:28,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6381 to 5247. [2019-11-15 20:26:28,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5247 states. [2019-11-15 20:26:28,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5247 states to 5247 states and 13262 transitions. [2019-11-15 20:26:28,463 INFO L78 Accepts]: Start accepts. Automaton has 5247 states and 13262 transitions. Word has length 81 [2019-11-15 20:26:28,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:26:28,464 INFO L462 AbstractCegarLoop]: Abstraction has 5247 states and 13262 transitions. [2019-11-15 20:26:28,465 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-15 20:26:28,466 INFO L276 IsEmpty]: Start isEmpty. Operand 5247 states and 13262 transitions. [2019-11-15 20:26:28,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2019-11-15 20:26:28,479 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:26:28,479 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:26:28,479 INFO L410 AbstractCegarLoop]: === Iteration 7 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 20:26:28,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:26:28,480 INFO L82 PathProgramCache]: Analyzing trace with hash -1709740937, now seen corresponding path program 1 times [2019-11-15 20:26:28,480 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:26:28,480 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768711658] [2019-11-15 20:26:28,480 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:26:28,480 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:26:28,480 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:26:28,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:26:28,911 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Undeclared function symbol (const Int) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.term(NoopScript.java:478) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.term(WrapperScript.java:250) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.term(WrapperScript.java:250) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.SmtUtils.termWithLocalSimplification(SmtUtils.java:1305) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.SmtUtils.termWithLocalSimplification(SmtUtils.java:1186) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.TermTransferrer.convertApplicationTerm(TermTransferrer.java:182) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer$BuildApplicationTerm.walk(TermTransformer.java:339) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.transform(TermTransformer.java:272) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.computePredicates(NestedInterpolantsBuilder.java:574) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:172) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:305) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:207) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:109) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.checkFeasibility(TraceAbstractionRefinementEngine.java:244) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:160) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:128) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-11-15 20:26:28,916 INFO L168 Benchmark]: Toolchain (without parser) took 6546.84 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 221.2 MB). Free memory was 939.4 MB in the beginning and 1.1 GB in the end (delta: -144.5 MB). Peak memory consumption was 76.8 MB. Max. memory is 11.5 GB. [2019-11-15 20:26:28,918 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 20:26:28,918 INFO L168 Benchmark]: CACSL2BoogieTranslator took 756.12 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.0 MB). Free memory was 939.4 MB in the beginning and 1.1 GB in the end (delta: -130.0 MB). Peak memory consumption was 18.6 MB. Max. memory is 11.5 GB. [2019-11-15 20:26:28,919 INFO L168 Benchmark]: Boogie Procedure Inliner took 81.62 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 20:26:28,919 INFO L168 Benchmark]: Boogie Preprocessor took 58.82 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 20:26:28,919 INFO L168 Benchmark]: RCFGBuilder took 563.99 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 38.5 MB). Peak memory consumption was 38.5 MB. Max. memory is 11.5 GB. [2019-11-15 20:26:28,920 INFO L168 Benchmark]: TraceAbstraction took 5082.47 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 91.2 MB). Free memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: -53.0 MB). Peak memory consumption was 38.2 MB. Max. memory is 11.5 GB. [2019-11-15 20:26:28,923 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 756.12 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.0 MB). Free memory was 939.4 MB in the beginning and 1.1 GB in the end (delta: -130.0 MB). Peak memory consumption was 18.6 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 81.62 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 58.82 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 563.99 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 38.5 MB). Peak memory consumption was 38.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 5082.47 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 91.2 MB). Free memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: -53.0 MB). Peak memory consumption was 38.2 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: Undeclared function symbol (const Int) de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: Undeclared function symbol (const Int): de.uni_freiburg.informatik.ultimate.logic.NoopScript.term(NoopScript.java:478) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-cad4683 [2019-11-15 20:26:31,043 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 20:26:31,044 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 20:26:31,054 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 20:26:31,055 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 20:26:31,056 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 20:26:31,057 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 20:26:31,059 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 20:26:31,060 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 20:26:31,061 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 20:26:31,062 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 20:26:31,063 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 20:26:31,063 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 20:26:31,064 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 20:26:31,065 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 20:26:31,066 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 20:26:31,067 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 20:26:31,068 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 20:26:31,069 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 20:26:31,071 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 20:26:31,073 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 20:26:31,073 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 20:26:31,074 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 20:26:31,075 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 20:26:31,078 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 20:26:31,078 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 20:26:31,083 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 20:26:31,084 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 20:26:31,084 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 20:26:31,085 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 20:26:31,085 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 20:26:31,086 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 20:26:31,088 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 20:26:31,089 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 20:26:31,090 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 20:26:31,092 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 20:26:31,093 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 20:26:31,093 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 20:26:31,093 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 20:26:31,094 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 20:26:31,098 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 20:26:31,099 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_3a2e4f25-cd25-46fa-a4dc-799b51c3744f/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-15 20:26:31,112 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 20:26:31,116 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 20:26:31,118 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 20:26:31,118 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 20:26:31,118 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 20:26:31,118 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 20:26:31,119 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-15 20:26:31,119 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-15 20:26:31,119 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 20:26:31,119 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-15 20:26:31,120 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-15 20:26:31,121 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-15 20:26:31,121 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-15 20:26:31,121 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-15 20:26:31,121 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-15 20:26:31,121 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-15 20:26:31,122 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 20:26:31,122 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-15 20:26:31,122 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 20:26:31,122 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 20:26:31,123 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-15 20:26:31,123 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-15 20:26:31,123 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 20:26:31,123 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 20:26:31,124 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-15 20:26:31,124 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-15 20:26:31,124 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-15 20:26:31,124 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-15 20:26:31,125 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-15 20:26:31,125 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-15 20:26:31,125 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_3a2e4f25-cd25-46fa-a4dc-799b51c3744f/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(__VERIFIER_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 -> 1891bb638db5c84e8fa01d5309bc212f15b49e23 [2019-11-15 20:26:31,187 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 20:26:31,197 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 20:26:31,200 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 20:26:31,201 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 20:26:31,202 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 20:26:31,202 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_3a2e4f25-cd25-46fa-a4dc-799b51c3744f/bin/uautomizer/../../sv-benchmarks/c/pthread/stack_longer-1.i [2019-11-15 20:26:31,253 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3a2e4f25-cd25-46fa-a4dc-799b51c3744f/bin/uautomizer/data/83d2bed8f/5b23a0d0bb064b2280d4968de1a769f6/FLAGf2dd3bc70 [2019-11-15 20:26:31,737 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 20:26:31,738 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_3a2e4f25-cd25-46fa-a4dc-799b51c3744f/sv-benchmarks/c/pthread/stack_longer-1.i [2019-11-15 20:26:31,756 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3a2e4f25-cd25-46fa-a4dc-799b51c3744f/bin/uautomizer/data/83d2bed8f/5b23a0d0bb064b2280d4968de1a769f6/FLAGf2dd3bc70 [2019-11-15 20:26:32,003 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_3a2e4f25-cd25-46fa-a4dc-799b51c3744f/bin/uautomizer/data/83d2bed8f/5b23a0d0bb064b2280d4968de1a769f6 [2019-11-15 20:26:32,006 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 20:26:32,007 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-15 20:26:32,011 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 20:26:32,012 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 20:26:32,015 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 20:26:32,016 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 08:26:32" (1/1) ... [2019-11-15 20:26:32,018 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20cdd6cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:26:32, skipping insertion in model container [2019-11-15 20:26:32,019 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 08:26:32" (1/1) ... [2019-11-15 20:26:32,025 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 20:26:32,081 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 20:26:32,536 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 20:26:32,552 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 20:26:32,614 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 20:26:32,770 INFO L192 MainTranslator]: Completed translation [2019-11-15 20:26:32,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:26:32 WrapperNode [2019-11-15 20:26:32,771 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 20:26:32,772 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-15 20:26:32,772 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-15 20:26:32,772 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-15 20:26:32,781 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:26:32" (1/1) ... [2019-11-15 20:26:32,827 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:26:32" (1/1) ... [2019-11-15 20:26:32,851 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-15 20:26:32,852 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 20:26:32,852 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 20:26:32,852 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 20:26:32,860 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:26:32" (1/1) ... [2019-11-15 20:26:32,861 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:26:32" (1/1) ... [2019-11-15 20:26:32,864 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:26:32" (1/1) ... [2019-11-15 20:26:32,864 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:26:32" (1/1) ... [2019-11-15 20:26:32,883 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:26:32" (1/1) ... [2019-11-15 20:26:32,887 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:26:32" (1/1) ... [2019-11-15 20:26:32,890 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:26:32" (1/1) ... [2019-11-15 20:26:32,894 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 20:26:32,894 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 20:26:32,894 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 20:26:32,894 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 20:26:32,901 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:26:32" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3a2e4f25-cd25-46fa-a4dc-799b51c3744f/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 [2019-11-15 20:26:32,978 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-15 20:26:32,979 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2019-11-15 20:26:32,979 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2019-11-15 20:26:32,979 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2019-11-15 20:26:32,979 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2019-11-15 20:26:32,980 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-15 20:26:32,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-15 20:26:32,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-15 20:26:32,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2019-11-15 20:26:32,980 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2019-11-15 20:26:32,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 20:26:32,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 20:26:32,984 WARN L202 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-11-15 20:26:33,532 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 20:26:33,533 INFO L284 CfgBuilder]: Removed 24 assume(true) statements. [2019-11-15 20:26:33,534 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 08:26:33 BoogieIcfgContainer [2019-11-15 20:26:33,534 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 20:26:33,535 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-15 20:26:33,535 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-15 20:26:33,538 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-15 20:26:33,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.11 08:26:32" (1/3) ... [2019-11-15 20:26:33,539 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ce97819 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 08:26:33, skipping insertion in model container [2019-11-15 20:26:33,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:26:32" (2/3) ... [2019-11-15 20:26:33,543 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ce97819 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 08:26:33, skipping insertion in model container [2019-11-15 20:26:33,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 08:26:33" (3/3) ... [2019-11-15 20:26:33,545 INFO L109 eAbstractionObserver]: Analyzing ICFG stack_longer-1.i [2019-11-15 20:26:33,586 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:33,586 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:33,586 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:33,587 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:33,587 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:33,587 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:33,588 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:33,588 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:33,588 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:33,589 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:33,589 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:33,589 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#t~nondet43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:33,589 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#t~nondet43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:33,590 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#t~nondet44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:33,590 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:33,590 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#t~nondet44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:33,591 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:33,591 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:33,591 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:33,591 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:33,591 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:33,592 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:33,592 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:33,592 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:33,593 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:33,593 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#t~ret36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:33,593 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:33,593 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:33,594 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:33,594 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:33,594 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:33,594 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:33,595 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:33,595 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:33,595 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:33,595 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:33,596 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:33,596 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:33,596 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#t~ret45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:33,596 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:33,597 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#t~ret36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:33,597 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#t~ret45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:33,597 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#t~ret45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:33,597 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:33,598 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:33,598 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#t~ret36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:33,598 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:33,598 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#t~ret45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:33,599 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#t~ret45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:33,599 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#t~ret36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:33,599 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_inc_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:33,599 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_inc_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:33,600 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:33,600 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#t~post42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:33,600 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_inc_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:33,600 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#t~post42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:33,601 WARN L315 ript$VariableManager]: TermVariabe Thread0_t1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:33,601 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_inc_top_#t~post31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:33,601 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_#t~post42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:33,601 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:33,602 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:33,603 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:33,603 WARN L315 ript$VariableManager]: TermVariabe Thread1_t2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:33,603 WARN L315 ript$VariableManager]: TermVariabe Thread1_t2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:33,603 WARN L315 ript$VariableManager]: TermVariabe Thread1_t2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:33,603 WARN L315 ript$VariableManager]: TermVariabe Thread1_t2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:33,604 WARN L315 ript$VariableManager]: TermVariabe Thread1_t2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:33,604 WARN L315 ript$VariableManager]: TermVariabe Thread1_t2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:33,604 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:33,604 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:33,605 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_#t~nondet47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:33,605 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_#t~nondet47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:33,605 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:33,605 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:33,606 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:33,606 WARN L315 ript$VariableManager]: TermVariabe Thread1_t2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:33,606 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_#t~post46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:33,606 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~mem41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:33,607 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:33,607 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~nondet38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:33,607 WARN L315 ript$VariableManager]: TermVariabe Thread1_t2_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:33,607 WARN L315 ript$VariableManager]: TermVariabe Thread1_t2_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:33,607 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:33,608 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_#t~post46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:33,608 WARN L315 ript$VariableManager]: TermVariabe Thread1_t2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:33,608 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:33,608 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:33,609 WARN L315 ript$VariableManager]: TermVariabe Thread1_t2_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:33,609 WARN L315 ript$VariableManager]: TermVariabe Thread1_t2_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:33,609 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_#t~post46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:33,609 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:33,610 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:33,610 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:33,610 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:33,611 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:33,611 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:33,611 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:33,611 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:33,612 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~nondet38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:33,612 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_dec_top_#t~post32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:33,612 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:33,612 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_dec_top_#t~post32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:33,613 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:33,613 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_#t~ret48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:33,613 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_dec_top_#t~post32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:33,613 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_#t~ret48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:33,614 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_#t~ret48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:33,614 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_dec_top_#t~post32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:33,614 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_#t~ret48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:33,614 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_#t~ret48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:33,615 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:33,615 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:33,615 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:33,615 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:33,616 WARN L315 ript$VariableManager]: TermVariabe Thread1_t2_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:33,616 WARN L315 ript$VariableManager]: TermVariabe Thread1_t2_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:33,616 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:33,616 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~mem41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:33,616 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~mem41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:33,617 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:33,617 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~ret40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:33,617 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t2_pop_#t~mem41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:26:33,635 WARN L141 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-11-15 20:26:33,636 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-15 20:26:33,644 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-11-15 20:26:33,653 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-11-15 20:26:33,668 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-15 20:26:33,668 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-15 20:26:33,668 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-15 20:26:33,668 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 20:26:33,669 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 20:26:33,669 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-15 20:26:33,669 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 20:26:33,669 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-15 20:26:33,680 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 124 places, 132 transitions [2019-11-15 20:26:33,944 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 5829 states. [2019-11-15 20:26:33,946 INFO L276 IsEmpty]: Start isEmpty. Operand 5829 states. [2019-11-15 20:26:33,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-11-15 20:26:33,979 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:26:33,980 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:26:33,983 INFO L410 AbstractCegarLoop]: === Iteration 1 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 20:26:33,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:26:33,988 INFO L82 PathProgramCache]: Analyzing trace with hash 1901944123, now seen corresponding path program 1 times [2019-11-15 20:26:34,000 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 20:26:34,001 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1057559732] [2019-11-15 20:26:34,001 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3a2e4f25-cd25-46fa-a4dc-799b51c3744f/bin/uautomizer/cvc4 Starting monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 20:26:34,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:26:34,189 INFO L256 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-15 20:26:34,196 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 20:26:34,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:26:34,245 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 20:26:34,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:26:34,272 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1057559732] [2019-11-15 20:26:34,273 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-15 20:26:34,273 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-11-15 20:26:34,274 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099690846] [2019-11-15 20:26:34,278 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-15 20:26:34,278 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 20:26:34,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-15 20:26:34,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-15 20:26:34,294 INFO L87 Difference]: Start difference. First operand 5829 states. Second operand 4 states. [2019-11-15 20:26:34,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:26:34,522 INFO L93 Difference]: Finished difference Result 9876 states and 26442 transitions. [2019-11-15 20:26:34,523 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-15 20:26:34,524 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 43 [2019-11-15 20:26:34,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:26:34,626 INFO L225 Difference]: With dead ends: 9876 [2019-11-15 20:26:34,626 INFO L226 Difference]: Without dead ends: 9768 [2019-11-15 20:26:34,629 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-15 20:26:34,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9768 states. [2019-11-15 20:26:35,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9768 to 7503. [2019-11-15 20:26:35,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7503 states. [2019-11-15 20:26:35,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7503 states to 7503 states and 20263 transitions. [2019-11-15 20:26:35,089 INFO L78 Accepts]: Start accepts. Automaton has 7503 states and 20263 transitions. Word has length 43 [2019-11-15 20:26:35,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:26:35,090 INFO L462 AbstractCegarLoop]: Abstraction has 7503 states and 20263 transitions. [2019-11-15 20:26:35,090 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-15 20:26:35,091 INFO L276 IsEmpty]: Start isEmpty. Operand 7503 states and 20263 transitions. [2019-11-15 20:26:35,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-11-15 20:26:35,096 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:26:35,096 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:26:35,298 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 20:26:35,298 INFO L410 AbstractCegarLoop]: === Iteration 2 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 20:26:35,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:26:35,299 INFO L82 PathProgramCache]: Analyzing trace with hash 863738420, now seen corresponding path program 1 times [2019-11-15 20:26:35,300 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 20:26:35,300 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1468681250] [2019-11-15 20:26:35,300 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3a2e4f25-cd25-46fa-a4dc-799b51c3744f/bin/uautomizer/cvc4 Starting monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 20:26:35,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:26:35,446 INFO L256 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-15 20:26:35,448 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 20:26:35,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:26:35,459 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 20:26:35,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:26:35,465 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1468681250] [2019-11-15 20:26:35,465 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-15 20:26:35,466 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-11-15 20:26:35,466 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594492389] [2019-11-15 20:26:35,467 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-15 20:26:35,468 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 20:26:35,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-15 20:26:35,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 20:26:35,468 INFO L87 Difference]: Start difference. First operand 7503 states and 20263 transitions. Second operand 3 states. [2019-11-15 20:26:35,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:26:35,532 INFO L93 Difference]: Finished difference Result 7608 states and 20260 transitions. [2019-11-15 20:26:35,533 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-15 20:26:35,533 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2019-11-15 20:26:35,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:26:35,585 INFO L225 Difference]: With dead ends: 7608 [2019-11-15 20:26:35,585 INFO L226 Difference]: Without dead ends: 7467 [2019-11-15 20:26:35,586 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 20:26:35,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7467 states. [2019-11-15 20:26:35,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7467 to 7047. [2019-11-15 20:26:35,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7047 states. [2019-11-15 20:26:35,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7047 states to 7047 states and 18919 transitions. [2019-11-15 20:26:35,786 INFO L78 Accepts]: Start accepts. Automaton has 7047 states and 18919 transitions. Word has length 46 [2019-11-15 20:26:35,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:26:35,800 INFO L462 AbstractCegarLoop]: Abstraction has 7047 states and 18919 transitions. [2019-11-15 20:26:35,800 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-15 20:26:35,800 INFO L276 IsEmpty]: Start isEmpty. Operand 7047 states and 18919 transitions. [2019-11-15 20:26:35,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-11-15 20:26:35,808 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:26:35,808 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:26:36,015 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 20:26:36,016 INFO L410 AbstractCegarLoop]: === Iteration 3 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 20:26:36,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:26:36,016 INFO L82 PathProgramCache]: Analyzing trace with hash 614749991, now seen corresponding path program 1 times [2019-11-15 20:26:36,017 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 20:26:36,017 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [2046502373] [2019-11-15 20:26:36,017 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3a2e4f25-cd25-46fa-a4dc-799b51c3744f/bin/uautomizer/cvc4 Starting monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 20:26:36,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:26:36,158 INFO L256 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-15 20:26:36,159 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 20:26:36,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:26:36,176 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 20:26:36,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:26:36,202 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2046502373] [2019-11-15 20:26:36,202 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-15 20:26:36,207 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-15 20:26:36,208 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820461840] [2019-11-15 20:26:36,208 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-15 20:26:36,210 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 20:26:36,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-15 20:26:36,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-15 20:26:36,210 INFO L87 Difference]: Start difference. First operand 7047 states and 18919 transitions. Second operand 6 states. [2019-11-15 20:26:36,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:26:36,323 INFO L93 Difference]: Finished difference Result 10044 states and 26923 transitions. [2019-11-15 20:26:36,323 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-15 20:26:36,324 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 51 [2019-11-15 20:26:36,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:26:36,366 INFO L225 Difference]: With dead ends: 10044 [2019-11-15 20:26:36,366 INFO L226 Difference]: Without dead ends: 10044 [2019-11-15 20:26:36,367 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-15 20:26:36,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10044 states. [2019-11-15 20:26:36,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10044 to 7329. [2019-11-15 20:26:36,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7329 states. [2019-11-15 20:26:36,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7329 states to 7329 states and 19687 transitions. [2019-11-15 20:26:36,582 INFO L78 Accepts]: Start accepts. Automaton has 7329 states and 19687 transitions. Word has length 51 [2019-11-15 20:26:36,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:26:36,584 INFO L462 AbstractCegarLoop]: Abstraction has 7329 states and 19687 transitions. [2019-11-15 20:26:36,584 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-15 20:26:36,585 INFO L276 IsEmpty]: Start isEmpty. Operand 7329 states and 19687 transitions. [2019-11-15 20:26:36,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2019-11-15 20:26:36,596 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:26:36,597 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:26:36,799 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 20:26:36,800 INFO L410 AbstractCegarLoop]: === Iteration 4 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 20:26:36,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:26:36,800 INFO L82 PathProgramCache]: Analyzing trace with hash 779229883, now seen corresponding path program 1 times [2019-11-15 20:26:36,801 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 20:26:36,801 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1825509516] [2019-11-15 20:26:36,801 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3a2e4f25-cd25-46fa-a4dc-799b51c3744f/bin/uautomizer/cvc4 Starting monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 20:26:36,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:26:36,929 INFO L256 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-15 20:26:36,931 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 20:26:36,978 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:26:36,978 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 20:26:37,036 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:26:37,037 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1825509516] [2019-11-15 20:26:37,037 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 20:26:37,038 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2019-11-15 20:26:37,038 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139439158] [2019-11-15 20:26:37,039 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-15 20:26:37,040 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 20:26:37,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-15 20:26:37,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2019-11-15 20:26:37,041 INFO L87 Difference]: Start difference. First operand 7329 states and 19687 transitions. Second operand 8 states. [2019-11-15 20:26:37,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:26:37,375 INFO L93 Difference]: Finished difference Result 22575 states and 60747 transitions. [2019-11-15 20:26:37,375 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-15 20:26:37,375 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 73 [2019-11-15 20:26:37,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:26:37,440 INFO L225 Difference]: With dead ends: 22575 [2019-11-15 20:26:37,440 INFO L226 Difference]: Without dead ends: 22575 [2019-11-15 20:26:37,442 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2019-11-15 20:26:37,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22575 states. [2019-11-15 20:26:37,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22575 to 18213. [2019-11-15 20:26:37,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18213 states. [2019-11-15 20:26:38,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18213 states to 18213 states and 49682 transitions. [2019-11-15 20:26:38,012 INFO L78 Accepts]: Start accepts. Automaton has 18213 states and 49682 transitions. Word has length 73 [2019-11-15 20:26:38,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:26:38,015 INFO L462 AbstractCegarLoop]: Abstraction has 18213 states and 49682 transitions. [2019-11-15 20:26:38,015 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-15 20:26:38,015 INFO L276 IsEmpty]: Start isEmpty. Operand 18213 states and 49682 transitions. [2019-11-15 20:26:38,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2019-11-15 20:26:38,025 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:26:38,026 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:26:38,228 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 20:26:38,228 INFO L410 AbstractCegarLoop]: === Iteration 5 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 20:26:38,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:26:38,228 INFO L82 PathProgramCache]: Analyzing trace with hash -944635952, now seen corresponding path program 1 times [2019-11-15 20:26:38,229 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 20:26:38,229 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1210814502] [2019-11-15 20:26:38,229 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3a2e4f25-cd25-46fa-a4dc-799b51c3744f/bin/uautomizer/cvc4 Starting monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 20:26:38,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:26:38,379 INFO L256 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-15 20:26:38,382 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 20:26:38,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:26:38,430 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 20:26:38,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:26:38,518 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1210814502] [2019-11-15 20:26:38,518 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-15 20:26:38,518 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2019-11-15 20:26:38,518 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185270880] [2019-11-15 20:26:38,519 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-15 20:26:38,519 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 20:26:38,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-15 20:26:38,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2019-11-15 20:26:38,520 INFO L87 Difference]: Start difference. First operand 18213 states and 49682 transitions. Second operand 12 states. [2019-11-15 20:26:39,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:26:39,987 INFO L93 Difference]: Finished difference Result 37971 states and 102165 transitions. [2019-11-15 20:26:39,987 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2019-11-15 20:26:39,987 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 76 [2019-11-15 20:26:39,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:26:40,091 INFO L225 Difference]: With dead ends: 37971 [2019-11-15 20:26:40,092 INFO L226 Difference]: Without dead ends: 37971 [2019-11-15 20:26:40,093 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 585 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=457, Invalid=1705, Unknown=0, NotChecked=0, Total=2162 [2019-11-15 20:26:40,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37971 states. [2019-11-15 20:26:40,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37971 to 19896. [2019-11-15 20:26:40,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19896 states. [2019-11-15 20:26:40,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19896 states to 19896 states and 54003 transitions. [2019-11-15 20:26:40,783 INFO L78 Accepts]: Start accepts. Automaton has 19896 states and 54003 transitions. Word has length 76 [2019-11-15 20:26:40,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:26:40,784 INFO L462 AbstractCegarLoop]: Abstraction has 19896 states and 54003 transitions. [2019-11-15 20:26:40,784 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-15 20:26:40,784 INFO L276 IsEmpty]: Start isEmpty. Operand 19896 states and 54003 transitions. [2019-11-15 20:26:40,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2019-11-15 20:26:40,795 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:26:40,795 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:26:40,997 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 20:26:40,997 INFO L410 AbstractCegarLoop]: === Iteration 6 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 20:26:40,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:26:40,997 INFO L82 PathProgramCache]: Analyzing trace with hash -527042782, now seen corresponding path program 1 times [2019-11-15 20:26:40,998 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 20:26:40,998 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [756338089] [2019-11-15 20:26:40,998 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3a2e4f25-cd25-46fa-a4dc-799b51c3744f/bin/uautomizer/cvc4 Starting monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 20:26:41,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:26:41,146 INFO L256 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-15 20:26:41,149 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 20:26:41,187 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2019-11-15 20:26:41,188 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 20:26:41,191 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 20:26:41,191 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-15 20:26:41,191 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2019-11-15 20:26:41,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:26:41,221 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 20:26:41,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:26:41,250 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [756338089] [2019-11-15 20:26:41,250 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-15 20:26:41,250 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-11-15 20:26:41,251 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246030406] [2019-11-15 20:26:41,251 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-15 20:26:41,252 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 20:26:41,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-15 20:26:41,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 20:26:41,252 INFO L87 Difference]: Start difference. First operand 19896 states and 54003 transitions. Second operand 3 states. [2019-11-15 20:26:41,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:26:41,312 INFO L93 Difference]: Finished difference Result 8859 states and 22744 transitions. [2019-11-15 20:26:41,312 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-15 20:26:41,312 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 85 [2019-11-15 20:26:41,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:26:41,331 INFO L225 Difference]: With dead ends: 8859 [2019-11-15 20:26:41,331 INFO L226 Difference]: Without dead ends: 8859 [2019-11-15 20:26:41,332 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 166 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 20:26:41,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8859 states. [2019-11-15 20:26:41,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8859 to 7068. [2019-11-15 20:26:41,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7068 states. [2019-11-15 20:26:41,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7068 states to 7068 states and 17954 transitions. [2019-11-15 20:26:41,459 INFO L78 Accepts]: Start accepts. Automaton has 7068 states and 17954 transitions. Word has length 85 [2019-11-15 20:26:41,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:26:41,460 INFO L462 AbstractCegarLoop]: Abstraction has 7068 states and 17954 transitions. [2019-11-15 20:26:41,460 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-15 20:26:41,461 INFO L276 IsEmpty]: Start isEmpty. Operand 7068 states and 17954 transitions. [2019-11-15 20:26:41,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2019-11-15 20:26:41,472 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:26:41,472 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:26:41,675 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 20:26:41,676 INFO L410 AbstractCegarLoop]: === Iteration 7 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 20:26:41,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:26:41,676 INFO L82 PathProgramCache]: Analyzing trace with hash -1092891644, now seen corresponding path program 1 times [2019-11-15 20:26:41,677 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 20:26:41,677 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1344148265] [2019-11-15 20:26:41,678 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3a2e4f25-cd25-46fa-a4dc-799b51c3744f/bin/uautomizer/cvc4 Starting monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 20:26:41,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:26:41,842 INFO L256 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 27 conjunts are in the unsatisfiable core [2019-11-15 20:26:41,845 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 20:26:42,072 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2019-11-15 20:26:42,072 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 20:26:42,094 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 20:26:42,095 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-15 20:26:42,095 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:25, output treesize:18 [2019-11-15 20:26:42,414 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-11-15 20:26:42,414 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 20:26:42,416 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 20:26:42,416 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-15 20:26:42,416 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2019-11-15 20:26:42,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:26:42,547 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 20:26:43,352 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 46 [2019-11-15 20:26:43,353 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 3 xjuncts. [2019-11-15 20:26:43,395 INFO L567 ElimStorePlain]: treesize reduction 17, result has 55.3 percent of original size [2019-11-15 20:26:43,395 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 3 xjuncts. [2019-11-15 20:26:43,395 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:26, output treesize:21 [2019-11-15 20:26:44,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:26:44,111 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1344148265] [2019-11-15 20:26:44,111 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-15 20:26:44,111 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [22, 20] imperfect sequences [] total 40 [2019-11-15 20:26:44,111 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529100375] [2019-11-15 20:26:44,112 INFO L442 AbstractCegarLoop]: Interpolant automaton has 40 states [2019-11-15 20:26:44,112 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 20:26:44,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2019-11-15 20:26:44,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=1445, Unknown=0, NotChecked=0, Total=1560 [2019-11-15 20:26:44,113 INFO L87 Difference]: Start difference. First operand 7068 states and 17954 transitions. Second operand 40 states. [2019-11-15 20:26:46,343 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 39 [2019-11-15 20:26:53,330 WARN L191 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2019-11-15 20:26:59,574 WARN L191 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 43 [2019-11-15 20:26:59,961 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 46 [2019-11-15 20:27:05,715 WARN L191 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2019-11-15 20:27:06,035 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2019-11-15 20:27:11,413 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2019-11-15 20:27:11,723 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 52 [2019-11-15 20:27:14,379 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2019-11-15 20:27:14,618 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2019-11-15 20:27:18,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:27:18,630 INFO L93 Difference]: Finished difference Result 31712 states and 80808 transitions. [2019-11-15 20:27:18,631 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 158 states. [2019-11-15 20:27:18,631 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 86 [2019-11-15 20:27:18,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:27:18,661 INFO L225 Difference]: With dead ends: 31712 [2019-11-15 20:27:18,662 INFO L226 Difference]: Without dead ends: 31712 [2019-11-15 20:27:18,672 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 478 GetRequests, 286 SyntacticMatches, 0 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13395 ImplicationChecksByTransitivity, 24.4s TimeCoverageRelationStatistics Valid=4119, Invalid=33323, Unknown=0, NotChecked=0, Total=37442 [2019-11-15 20:27:18,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31712 states. [2019-11-15 20:27:18,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31712 to 11499. [2019-11-15 20:27:18,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11499 states. [2019-11-15 20:27:18,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11499 states to 11499 states and 29880 transitions. [2019-11-15 20:27:18,962 INFO L78 Accepts]: Start accepts. Automaton has 11499 states and 29880 transitions. Word has length 86 [2019-11-15 20:27:18,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:27:18,962 INFO L462 AbstractCegarLoop]: Abstraction has 11499 states and 29880 transitions. [2019-11-15 20:27:18,962 INFO L463 AbstractCegarLoop]: Interpolant automaton has 40 states. [2019-11-15 20:27:18,962 INFO L276 IsEmpty]: Start isEmpty. Operand 11499 states and 29880 transitions. [2019-11-15 20:27:18,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2019-11-15 20:27:18,980 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:27:18,980 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:27:19,182 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 20:27:19,183 INFO L410 AbstractCegarLoop]: === Iteration 8 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 20:27:19,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:27:19,183 INFO L82 PathProgramCache]: Analyzing trace with hash 2037540912, now seen corresponding path program 1 times [2019-11-15 20:27:19,183 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 20:27:19,183 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [5052988] [2019-11-15 20:27:19,184 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3a2e4f25-cd25-46fa-a4dc-799b51c3744f/bin/uautomizer/cvc4 Starting monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 20:27:19,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 20:27:19,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 20:27:19,819 INFO L168 tionRefinementEngine]: Strategy WOLF found a feasible trace [2019-11-15 20:27:19,819 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-11-15 20:27:20,023 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-15 20:27:20,155 INFO L303 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2019-11-15 20:27:20,156 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.11 08:27:20 BasicIcfg [2019-11-15 20:27:20,157 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-15 20:27:20,157 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-15 20:27:20,157 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-15 20:27:20,157 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-15 20:27:20,158 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 08:26:33" (3/4) ... [2019-11-15 20:27:20,160 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-15 20:27:20,260 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_3a2e4f25-cd25-46fa-a4dc-799b51c3744f/bin/uautomizer/witness.graphml [2019-11-15 20:27:20,262 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-15 20:27:20,264 INFO L168 Benchmark]: Toolchain (without parser) took 48256.82 ms. Allocated memory was 1.0 GB in the beginning and 2.0 GB in the end (delta: 968.9 MB). Free memory was 945.6 MB in the beginning and 870.3 MB in the end (delta: 75.3 MB). Peak memory consumption was 1.0 GB. Max. memory is 11.5 GB. [2019-11-15 20:27:20,264 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 977.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 20:27:20,265 INFO L168 Benchmark]: CACSL2BoogieTranslator took 760.00 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 184.5 MB). Free memory was 945.6 MB in the beginning and 1.1 GB in the end (delta: -183.2 MB). Peak memory consumption was 29.5 MB. Max. memory is 11.5 GB. [2019-11-15 20:27:20,265 INFO L168 Benchmark]: Boogie Procedure Inliner took 79.75 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 11.5 GB. [2019-11-15 20:27:20,266 INFO L168 Benchmark]: Boogie Preprocessor took 42.12 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 20:27:20,266 INFO L168 Benchmark]: RCFGBuilder took 640.09 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 35.5 MB). Peak memory consumption was 35.5 MB. Max. memory is 11.5 GB. [2019-11-15 20:27:20,266 INFO L168 Benchmark]: TraceAbstraction took 46621.54 ms. Allocated memory was 1.2 GB in the beginning and 2.0 GB in the end (delta: 784.3 MB). Free memory was 1.1 GB in the beginning and 889.3 MB in the end (delta: 197.8 MB). Peak memory consumption was 982.1 MB. Max. memory is 11.5 GB. [2019-11-15 20:27:20,267 INFO L168 Benchmark]: Witness Printer took 105.72 ms. Allocated memory is still 2.0 GB. Free memory was 889.3 MB in the beginning and 870.3 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 11.5 GB. [2019-11-15 20:27:20,271 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 977.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 760.00 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 184.5 MB). Free memory was 945.6 MB in the beginning and 1.1 GB in the end (delta: -183.2 MB). Peak memory consumption was 29.5 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 79.75 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 42.12 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 640.09 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 35.5 MB). Peak memory consumption was 35.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 46621.54 ms. Allocated memory was 1.2 GB in the beginning and 2.0 GB in the end (delta: 784.3 MB). Free memory was 1.1 GB in the beginning and 889.3 MB in the end (delta: 197.8 MB). Peak memory consumption was 982.1 MB. Max. memory is 11.5 GB. * Witness Printer took 105.72 ms. Allocated memory is still 2.0 GB. Free memory was 889.3 MB in the beginning and 870.3 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 918]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L913] 0 static int top=0; VAL [top=0] [L914] 0 static unsigned int arr[(400)]; VAL [arr={-2021156634:0}, top=0] [L915] 0 pthread_mutex_t m; VAL [arr={-2021156634:0}, m={680067113:0}, top=0] [L916] 0 _Bool flag=(0); VAL [arr={-2021156634:0}, flag=0, m={680067113:0}, top=0] [L997] 0 pthread_t id1, id2; VAL [arr={-2021156634:0}, flag=0, m={680067113:0}, top=0] [L999] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, ((void *)0)) VAL [arr={-2021156634:0}, flag=0, m={680067113:0}, top=0] [L966] 1 int i; VAL [arr={-2021156634:0}, flag=0, m={680067113:0}, top=0] [L967] 1 unsigned int tmp; VAL [arr={-2021156634:0}, flag=0, m={680067113:0}, top=0] [L968] 1 i=0 VAL [arr={-2021156634:0}, flag=0, m={680067113:0}, top=0] [L968] COND TRUE 1 i<(400) VAL [arr={-2021156634:0}, flag=0, m={680067113:0}, top=0] [L1000] FCALL, FORK 0 pthread_create(&id2, ((void *)0), t2, ((void *)0)) VAL [arr={-2021156634:0}, flag=0, m={680067113:0}, top=0] [L982] 2 int i; VAL [arr={-2021156634:0}, flag=0, m={680067113:0}, top=0] [L983] 2 i=0 VAL [arr={-2021156634:0}, flag=0, m={680067113:0}, top=0] [L983] COND TRUE 2 i<(400) VAL [arr={-2021156634:0}, flag=0, m={680067113:0}, top=0] [L971] 1 tmp = __VERIFIER_nondet_uint() VAL [arr={-2021156634:0}, flag=0, m={680067113:0}, top=0] [L938] COND FALSE 1 !(top==(400)) VAL [arr={-2021156634:0}, flag=0, m={680067113:0}, top=0] [L930] 1 return top; VAL [arr={-2021156634:0}, flag=0, m={680067113:0}, top=0] [L945] 1 stack[get_top()] = x VAL [arr={-2021156634:0}, flag=0, m={680067113:0}, top=0] [L922] 1 top++ VAL [arr={-2021156634:0}, flag=0, m={680067113:0}, top=1] [L948] 1 return 0; VAL [arr={-2021156634:0}, flag=0, m={680067113:0}, top=1] [L973] COND FALSE 1 !(push(arr,tmp)==(-1)) VAL [arr={-2021156634:0}, flag=0, m={680067113:0}, top=1] [L975] 1 flag=(1) VAL [arr={-2021156634:0}, flag=1, m={680067113:0}, top=1] [L986] COND TRUE 2 \read(flag) VAL [arr={-2021156634:0}, flag=1, m={680067113:0}, top=1] [L930] 2 return top; VAL [arr={-2021156634:0}, flag=1, m={680067113:0}, top=1] [L952] COND FALSE 2 !(get_top()==0) VAL [arr={-2021156634:0}, flag=1, m={680067113:0}, top=1] [L926] 2 top-- VAL [arr={-2021156634:0}, flag=1, m={680067113:0}, top=0] [L930] 2 return top; VAL [arr={-2021156634:0}, flag=1, m={680067113:0}, top=0] [L960] EXPR 2 stack[get_top()] VAL [arr={-2021156634:0}, flag=1, m={680067113:0}, top=0] [L960] 2 return stack[get_top()]; VAL [arr={-2021156634:0}, flag=1, m={680067113:0}, top=0] [L988] COND FALSE 2 !(!(pop(arr)!=(-2))) VAL [arr={-2021156634:0}, flag=1, m={680067113:0}, top=0] [L983] 2 i++ VAL [arr={-2021156634:0}, flag=1, m={680067113:0}, top=0] [L983] COND TRUE 2 i<(400) VAL [arr={-2021156634:0}, flag=1, m={680067113:0}, top=0] [L986] COND TRUE 2 \read(flag) VAL [arr={-2021156634:0}, flag=1, m={680067113:0}, top=0] [L930] 2 return top; VAL [arr={-2021156634:0}, flag=1, m={680067113:0}, top=0] [L952] COND TRUE 2 get_top()==0 VAL [arr={-2021156634:0}, flag=1, m={680067113:0}, top=0] [L955] 2 return (-2); VAL [arr={-2021156634:0}, flag=1, m={680067113:0}, top=0] [L988] COND TRUE 2 !(pop(arr)!=(-2)) VAL [arr={-2021156634:0}, flag=1, m={680067113:0}, top=0] [L918] 2 __VERIFIER_error() VAL [arr={-2021156634:0}, flag=1, m={680067113:0}, top=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 209 locations, 4 error locations. Result: UNSAFE, OverallTime: 46.4s, OverallIterations: 8, TraceHistogramMax: 2, AutomataDifference: 37.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 2042 SDtfs, 8687 SDslu, 20974 SDs, 0 SdLazy, 4744 SolverSat, 289 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 11.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1256 GetRequests, 997 SyntacticMatches, 1 SemanticMatches, 258 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13999 ImplicationChecksByTransitivity, 25.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19896occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.5s AutomataMinimizationTime, 7 MinimizatonAttempts, 49841 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 568 NumberOfCodeBlocks, 568 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 906 ConstructedInterpolants, 0 QuantifiedInterpolants, 260426 SizeOfPredicates, 43 NumberOfNonLiveVariables, 774 ConjunctsInSsa, 46 ConjunctsInUnsatCore, 14 InterpolantComputations, 12 PerfectInterpolantSequences, 4/28 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...