/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/list-ext3-properties/sll_nondet_insert-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 15:30:18,161 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 15:30:18,164 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 15:30:18,190 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 15:30:18,191 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 15:30:18,192 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 15:30:18,193 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 15:30:18,195 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 15:30:18,197 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 15:30:18,197 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 15:30:18,198 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 15:30:18,199 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 15:30:18,200 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 15:30:18,201 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 15:30:18,202 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 15:30:18,203 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 15:30:18,204 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 15:30:18,205 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 15:30:18,206 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 15:30:18,208 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 15:30:18,212 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 15:30:18,217 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 15:30:18,218 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 15:30:18,218 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 15:30:18,224 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 15:30:18,224 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 15:30:18,224 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 15:30:18,225 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 15:30:18,225 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 15:30:18,229 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 15:30:18,229 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 15:30:18,230 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 15:30:18,230 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 15:30:18,231 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 15:30:18,232 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 15:30:18,232 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 15:30:18,233 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 15:30:18,233 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 15:30:18,234 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 15:30:18,235 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 15:30:18,236 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 15:30:18,237 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 15:30:18,290 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 15:30:18,290 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 15:30:18,292 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 15:30:18,295 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 15:30:18,295 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 15:30:18,295 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 15:30:18,295 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 15:30:18,296 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 15:30:18,296 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 15:30:18,296 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 15:30:18,296 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 15:30:18,296 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 15:30:18,297 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 15:30:18,298 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 15:30:18,298 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 15:30:18,298 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 15:30:18,298 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 15:30:18,299 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 15:30:18,299 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 15:30:18,299 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 15:30:18,299 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 15:30:18,299 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 15:30:18,300 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 15:30:18,300 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 15:30:18,300 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 15:30:18,300 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 15:30:18,301 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 15:30:18,301 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 15:30:18,301 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 15:30:18,301 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> false [2020-08-18 15:30:18,645 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 15:30:18,666 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 15:30:18,672 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 15:30:18,674 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 15:30:18,674 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 15:30:18,675 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext3-properties/sll_nondet_insert-1.i [2020-08-18 15:30:18,747 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/361844c47/a09b0766a4804021a9407e307555a303/FLAG1922e5ccf [2020-08-18 15:30:19,354 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 15:30:19,355 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-ext3-properties/sll_nondet_insert-1.i [2020-08-18 15:30:19,371 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/361844c47/a09b0766a4804021a9407e307555a303/FLAG1922e5ccf [2020-08-18 15:30:19,594 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/361844c47/a09b0766a4804021a9407e307555a303 [2020-08-18 15:30:19,606 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 15:30:19,607 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 15:30:19,608 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 15:30:19,609 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 15:30:19,612 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 15:30:19,613 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 03:30:19" (1/1) ... [2020-08-18 15:30:19,616 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bd36ef8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:30:19, skipping insertion in model container [2020-08-18 15:30:19,616 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 03:30:19" (1/1) ... [2020-08-18 15:30:19,624 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 15:30:19,663 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 15:30:20,211 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 15:30:20,224 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 15:30:20,280 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 15:30:20,343 INFO L208 MainTranslator]: Completed translation [2020-08-18 15:30:20,344 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:30:20 WrapperNode [2020-08-18 15:30:20,344 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 15:30:20,345 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 15:30:20,345 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 15:30:20,345 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 15:30:20,360 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:30:20" (1/1) ... [2020-08-18 15:30:20,360 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:30:20" (1/1) ... [2020-08-18 15:30:20,378 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:30:20" (1/1) ... [2020-08-18 15:30:20,378 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:30:20" (1/1) ... [2020-08-18 15:30:20,394 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:30:20" (1/1) ... [2020-08-18 15:30:20,401 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:30:20" (1/1) ... [2020-08-18 15:30:20,405 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:30:20" (1/1) ... [2020-08-18 15:30:20,412 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 15:30:20,413 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 15:30:20,413 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 15:30:20,413 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 15:30:20,414 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:30:20" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 15:30:20,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 15:30:20,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 15:30:20,478 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-08-18 15:30:20,478 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-08-18 15:30:20,479 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-08-18 15:30:20,479 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2020-08-18 15:30:20,479 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_length [2020-08-18 15:30:20,480 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_destroy [2020-08-18 15:30:20,480 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_insert [2020-08-18 15:30:20,480 INFO L138 BoogieDeclarations]: Found implementation of procedure _get_nondet_int [2020-08-18 15:30:20,480 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 15:30:20,481 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 15:30:20,481 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 15:30:20,482 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-08-18 15:30:20,482 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-08-18 15:30:20,482 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-08-18 15:30:20,483 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-08-18 15:30:20,483 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-08-18 15:30:20,483 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-08-18 15:30:20,483 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-08-18 15:30:20,484 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-08-18 15:30:20,484 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-08-18 15:30:20,484 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-08-18 15:30:20,484 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-08-18 15:30:20,486 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-08-18 15:30:20,487 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-08-18 15:30:20,487 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-08-18 15:30:20,487 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-08-18 15:30:20,487 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-08-18 15:30:20,487 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-08-18 15:30:20,488 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-08-18 15:30:20,488 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-08-18 15:30:20,488 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-08-18 15:30:20,488 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-08-18 15:30:20,488 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-08-18 15:30:20,489 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-08-18 15:30:20,489 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-08-18 15:30:20,489 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-08-18 15:30:20,489 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-08-18 15:30:20,489 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-08-18 15:30:20,490 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-08-18 15:30:20,490 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-08-18 15:30:20,490 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-08-18 15:30:20,490 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-08-18 15:30:20,490 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-08-18 15:30:20,491 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-08-18 15:30:20,491 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-08-18 15:30:20,491 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-08-18 15:30:20,491 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-08-18 15:30:20,491 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-08-18 15:30:20,491 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-08-18 15:30:20,491 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-08-18 15:30:20,492 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-08-18 15:30:20,492 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-08-18 15:30:20,492 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-08-18 15:30:20,492 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-08-18 15:30:20,492 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-08-18 15:30:20,492 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-08-18 15:30:20,493 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-08-18 15:30:20,493 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-08-18 15:30:20,493 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-08-18 15:30:20,494 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-08-18 15:30:20,494 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-08-18 15:30:20,494 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-08-18 15:30:20,494 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-08-18 15:30:20,494 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 15:30:20,494 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-18 15:30:20,495 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-08-18 15:30:20,495 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 15:30:20,495 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-08-18 15:30:20,496 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-08-18 15:30:20,496 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-08-18 15:30:20,497 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-08-18 15:30:20,497 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-08-18 15:30:20,497 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-18 15:30:20,497 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-08-18 15:30:20,498 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-08-18 15:30:20,498 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-08-18 15:30:20,498 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-08-18 15:30:20,498 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-08-18 15:30:20,499 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-08-18 15:30:20,499 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-08-18 15:30:20,499 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-08-18 15:30:20,499 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-08-18 15:30:20,500 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-08-18 15:30:20,500 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-08-18 15:30:20,500 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-08-18 15:30:20,500 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-08-18 15:30:20,501 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-08-18 15:30:20,501 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-08-18 15:30:20,501 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-08-18 15:30:20,501 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-08-18 15:30:20,501 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-08-18 15:30:20,502 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-08-18 15:30:20,502 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-08-18 15:30:20,502 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-08-18 15:30:20,502 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-08-18 15:30:20,502 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-08-18 15:30:20,502 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-08-18 15:30:20,502 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-08-18 15:30:20,502 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-08-18 15:30:20,503 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-08-18 15:30:20,503 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-08-18 15:30:20,503 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-08-18 15:30:20,503 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-08-18 15:30:20,503 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-08-18 15:30:20,503 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-08-18 15:30:20,503 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-08-18 15:30:20,503 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-08-18 15:30:20,503 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-08-18 15:30:20,503 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-08-18 15:30:20,503 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-08-18 15:30:20,504 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-08-18 15:30:20,504 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-08-18 15:30:20,504 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-08-18 15:30:20,504 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-08-18 15:30:20,504 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-08-18 15:30:20,504 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-08-18 15:30:20,504 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-08-18 15:30:20,504 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2020-08-18 15:30:20,505 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 15:30:20,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 15:30:20,505 INFO L130 BoogieDeclarations]: Found specification of procedure sll_length [2020-08-18 15:30:20,505 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 15:30:20,505 INFO L130 BoogieDeclarations]: Found specification of procedure sll_destroy [2020-08-18 15:30:20,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 15:30:20,506 INFO L130 BoogieDeclarations]: Found specification of procedure sll_insert [2020-08-18 15:30:20,506 INFO L130 BoogieDeclarations]: Found specification of procedure _get_nondet_int [2020-08-18 15:30:20,506 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 15:30:20,506 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 15:30:20,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-18 15:30:20,507 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 15:30:20,507 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 15:30:20,857 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-08-18 15:30:21,145 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 15:30:21,145 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-08-18 15:30:21,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 03:30:21 BoogieIcfgContainer [2020-08-18 15:30:21,149 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 15:30:21,151 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 15:30:21,151 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 15:30:21,154 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 15:30:21,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 03:30:19" (1/3) ... [2020-08-18 15:30:21,155 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c41f95d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 03:30:21, skipping insertion in model container [2020-08-18 15:30:21,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:30:20" (2/3) ... [2020-08-18 15:30:21,156 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c41f95d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 03:30:21, skipping insertion in model container [2020-08-18 15:30:21,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 03:30:21" (3/3) ... [2020-08-18 15:30:21,158 INFO L109 eAbstractionObserver]: Analyzing ICFG sll_nondet_insert-1.i [2020-08-18 15:30:21,169 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 15:30:21,177 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 15:30:21,192 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 15:30:21,214 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 15:30:21,214 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 15:30:21,214 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 15:30:21,215 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 15:30:21,215 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 15:30:21,215 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 15:30:21,215 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 15:30:21,215 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 15:30:21,233 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states. [2020-08-18 15:30:21,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-08-18 15:30:21,240 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:30:21,241 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-18 15:30:21,242 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:30:21,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:30:21,248 INFO L82 PathProgramCache]: Analyzing trace with hash 960784814, now seen corresponding path program 1 times [2020-08-18 15:30:21,256 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:30:21,256 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1965294308] [2020-08-18 15:30:21,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:30:21,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:30:21,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:30:21,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:30:21,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-18 15:30:21,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:30:21,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:30:21,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:30:21,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-18 15:30:21,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:30:21,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 15:30:21,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:30:21,527 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-08-18 15:30:21,528 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1965294308] [2020-08-18 15:30:21,530 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:30:21,531 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 15:30:21,532 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787590696] [2020-08-18 15:30:21,537 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 15:30:21,538 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:30:21,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 15:30:21,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 15:30:21,556 INFO L87 Difference]: Start difference. First operand 67 states. Second operand 4 states. [2020-08-18 15:30:21,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:30:21,832 INFO L93 Difference]: Finished difference Result 136 states and 184 transitions. [2020-08-18 15:30:21,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 15:30:21,833 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2020-08-18 15:30:21,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:30:21,844 INFO L225 Difference]: With dead ends: 136 [2020-08-18 15:30:21,844 INFO L226 Difference]: Without dead ends: 58 [2020-08-18 15:30:21,849 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 15:30:21,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-08-18 15:30:21,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 53. [2020-08-18 15:30:21,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-08-18 15:30:21,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 62 transitions. [2020-08-18 15:30:21,901 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 62 transitions. Word has length 37 [2020-08-18 15:30:21,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:30:21,901 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 62 transitions. [2020-08-18 15:30:21,901 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 15:30:21,901 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 62 transitions. [2020-08-18 15:30:21,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-08-18 15:30:21,904 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:30:21,904 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-18 15:30:21,905 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 15:30:21,905 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:30:21,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:30:21,905 INFO L82 PathProgramCache]: Analyzing trace with hash 322036078, now seen corresponding path program 1 times [2020-08-18 15:30:21,906 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:30:21,906 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1748775936] [2020-08-18 15:30:21,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:30:21,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:30:22,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:30:22,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:30:22,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-18 15:30:22,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:30:22,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 15:30:22,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:30:22,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 15:30:22,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:30:22,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 15:30:22,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:30:22,197 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-18 15:30:22,198 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1748775936] [2020-08-18 15:30:22,198 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 15:30:22,198 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-18 15:30:22,198 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686191744] [2020-08-18 15:30:22,200 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 15:30:22,200 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:30:22,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 15:30:22,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-08-18 15:30:22,201 INFO L87 Difference]: Start difference. First operand 53 states and 62 transitions. Second operand 11 states. [2020-08-18 15:30:22,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:30:22,816 INFO L93 Difference]: Finished difference Result 128 states and 162 transitions. [2020-08-18 15:30:22,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-18 15:30:22,817 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 44 [2020-08-18 15:30:22,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:30:22,819 INFO L225 Difference]: With dead ends: 128 [2020-08-18 15:30:22,820 INFO L226 Difference]: Without dead ends: 91 [2020-08-18 15:30:22,821 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2020-08-18 15:30:22,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-08-18 15:30:22,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 66. [2020-08-18 15:30:22,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-08-18 15:30:22,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 81 transitions. [2020-08-18 15:30:22,842 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 81 transitions. Word has length 44 [2020-08-18 15:30:22,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:30:22,842 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 81 transitions. [2020-08-18 15:30:22,842 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 15:30:22,842 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 81 transitions. [2020-08-18 15:30:22,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-18 15:30:22,844 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:30:22,845 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-08-18 15:30:22,845 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 15:30:22,845 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:30:22,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:30:22,846 INFO L82 PathProgramCache]: Analyzing trace with hash -1427384127, now seen corresponding path program 1 times [2020-08-18 15:30:22,846 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:30:22,846 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [563238483] [2020-08-18 15:30:22,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:30:22,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:30:22,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:30:22,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:30:22,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-18 15:30:22,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:30:23,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 15:30:23,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:30:23,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-18 15:30:23,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:30:23,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 15:30:23,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:30:23,116 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-18 15:30:23,117 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [563238483] [2020-08-18 15:30:23,117 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 15:30:23,117 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-18 15:30:23,118 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746643273] [2020-08-18 15:30:23,118 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 15:30:23,118 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:30:23,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 15:30:23,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-08-18 15:30:23,119 INFO L87 Difference]: Start difference. First operand 66 states and 81 transitions. Second operand 12 states. [2020-08-18 15:30:23,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:30:23,803 INFO L93 Difference]: Finished difference Result 134 states and 170 transitions. [2020-08-18 15:30:23,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 15:30:23,803 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 47 [2020-08-18 15:30:23,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:30:23,805 INFO L225 Difference]: With dead ends: 134 [2020-08-18 15:30:23,805 INFO L226 Difference]: Without dead ends: 88 [2020-08-18 15:30:23,806 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2020-08-18 15:30:23,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-08-18 15:30:23,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 55. [2020-08-18 15:30:23,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-08-18 15:30:23,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 64 transitions. [2020-08-18 15:30:23,817 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 64 transitions. Word has length 47 [2020-08-18 15:30:23,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:30:23,817 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 64 transitions. [2020-08-18 15:30:23,817 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 15:30:23,818 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 64 transitions. [2020-08-18 15:30:23,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-08-18 15:30:23,819 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:30:23,819 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-18 15:30:23,820 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 15:30:23,820 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:30:23,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:30:23,820 INFO L82 PathProgramCache]: Analyzing trace with hash -877094443, now seen corresponding path program 1 times [2020-08-18 15:30:23,820 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:30:23,821 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [183035753] [2020-08-18 15:30:23,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:30:23,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:30:23,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:30:23,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:30:23,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-18 15:30:23,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:30:23,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 15:30:23,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:30:23,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-18 15:30:23,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:30:23,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 15:30:23,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:30:23,987 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-18 15:30:23,987 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [183035753] [2020-08-18 15:30:23,988 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 15:30:23,988 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-18 15:30:23,988 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856340061] [2020-08-18 15:30:23,989 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 15:30:23,989 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:30:23,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 15:30:23,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-08-18 15:30:23,990 INFO L87 Difference]: Start difference. First operand 55 states and 64 transitions. Second operand 12 states. [2020-08-18 15:30:24,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:30:24,559 INFO L93 Difference]: Finished difference Result 132 states and 166 transitions. [2020-08-18 15:30:24,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 15:30:24,563 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 48 [2020-08-18 15:30:24,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:30:24,565 INFO L225 Difference]: With dead ends: 132 [2020-08-18 15:30:24,566 INFO L226 Difference]: Without dead ends: 95 [2020-08-18 15:30:24,568 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2020-08-18 15:30:24,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-08-18 15:30:24,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 70. [2020-08-18 15:30:24,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-08-18 15:30:24,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 85 transitions. [2020-08-18 15:30:24,586 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 85 transitions. Word has length 48 [2020-08-18 15:30:24,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:30:24,587 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 85 transitions. [2020-08-18 15:30:24,587 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 15:30:24,587 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 85 transitions. [2020-08-18 15:30:24,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-18 15:30:24,589 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:30:24,589 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-08-18 15:30:24,590 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 15:30:24,590 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:30:24,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:30:24,590 INFO L82 PathProgramCache]: Analyzing trace with hash 2083565480, now seen corresponding path program 1 times [2020-08-18 15:30:24,590 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:30:24,591 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [506576521] [2020-08-18 15:30:24,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:30:24,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:30:24,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:30:24,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:30:24,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-18 15:30:24,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:30:24,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 15:30:24,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:30:24,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 15:30:24,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:30:24,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 15:30:24,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:30:24,840 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-18 15:30:24,840 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [506576521] [2020-08-18 15:30:24,841 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 15:30:24,841 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-18 15:30:24,841 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283643523] [2020-08-18 15:30:24,842 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 15:30:24,842 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:30:24,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 15:30:24,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2020-08-18 15:30:24,843 INFO L87 Difference]: Start difference. First operand 70 states and 85 transitions. Second operand 13 states. [2020-08-18 15:30:25,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:30:25,566 INFO L93 Difference]: Finished difference Result 138 states and 174 transitions. [2020-08-18 15:30:25,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-18 15:30:25,572 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 51 [2020-08-18 15:30:25,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:30:25,574 INFO L225 Difference]: With dead ends: 138 [2020-08-18 15:30:25,574 INFO L226 Difference]: Without dead ends: 92 [2020-08-18 15:30:25,575 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2020-08-18 15:30:25,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-08-18 15:30:25,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 59. [2020-08-18 15:30:25,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-08-18 15:30:25,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 68 transitions. [2020-08-18 15:30:25,584 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 68 transitions. Word has length 51 [2020-08-18 15:30:25,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:30:25,585 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 68 transitions. [2020-08-18 15:30:25,585 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-18 15:30:25,585 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 68 transitions. [2020-08-18 15:30:25,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 15:30:25,590 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:30:25,590 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-08-18 15:30:25,591 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 15:30:25,591 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:30:25,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:30:25,591 INFO L82 PathProgramCache]: Analyzing trace with hash -137443652, now seen corresponding path program 2 times [2020-08-18 15:30:25,591 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:30:25,595 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1919268151] [2020-08-18 15:30:25,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:30:25,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:30:25,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:30:25,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:30:25,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-18 15:30:25,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:30:25,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 15:30:25,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:30:25,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 15:30:25,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:30:25,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 15:30:25,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:30:25,784 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-08-18 15:30:25,784 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1919268151] [2020-08-18 15:30:25,785 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:30:25,785 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 15:30:25,785 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392570489] [2020-08-18 15:30:25,786 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 15:30:25,786 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:30:25,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 15:30:25,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-08-18 15:30:25,787 INFO L87 Difference]: Start difference. First operand 59 states and 68 transitions. Second operand 12 states. [2020-08-18 15:30:26,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:30:26,195 INFO L93 Difference]: Finished difference Result 79 states and 93 transitions. [2020-08-18 15:30:26,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-18 15:30:26,195 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 52 [2020-08-18 15:30:26,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:30:26,198 INFO L225 Difference]: With dead ends: 79 [2020-08-18 15:30:26,198 INFO L226 Difference]: Without dead ends: 75 [2020-08-18 15:30:26,199 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2020-08-18 15:30:26,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-08-18 15:30:26,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 68. [2020-08-18 15:30:26,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-08-18 15:30:26,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 81 transitions. [2020-08-18 15:30:26,208 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 81 transitions. Word has length 52 [2020-08-18 15:30:26,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:30:26,208 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 81 transitions. [2020-08-18 15:30:26,209 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 15:30:26,209 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 81 transitions. [2020-08-18 15:30:26,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-18 15:30:26,210 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:30:26,210 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-08-18 15:30:26,210 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 15:30:26,211 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:30:26,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:30:26,211 INFO L82 PathProgramCache]: Analyzing trace with hash -1960431148, now seen corresponding path program 1 times [2020-08-18 15:30:26,211 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:30:26,212 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [830718805] [2020-08-18 15:30:26,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:30:26,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:30:26,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:30:26,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:30:26,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-18 15:30:26,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:30:26,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 15:30:26,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:30:26,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 15:30:26,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:30:26,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 15:30:26,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:30:26,374 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-08-18 15:30:26,375 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [830718805] [2020-08-18 15:30:26,375 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:30:26,375 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 15:30:26,376 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127018161] [2020-08-18 15:30:26,377 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 15:30:26,378 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:30:26,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 15:30:26,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-08-18 15:30:26,379 INFO L87 Difference]: Start difference. First operand 68 states and 81 transitions. Second operand 9 states. [2020-08-18 15:30:26,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:30:26,685 INFO L93 Difference]: Finished difference Result 136 states and 170 transitions. [2020-08-18 15:30:26,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 15:30:26,686 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 53 [2020-08-18 15:30:26,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:30:26,687 INFO L225 Difference]: With dead ends: 136 [2020-08-18 15:30:26,687 INFO L226 Difference]: Without dead ends: 95 [2020-08-18 15:30:26,688 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2020-08-18 15:30:26,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-08-18 15:30:26,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 79. [2020-08-18 15:30:26,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-08-18 15:30:26,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 96 transitions. [2020-08-18 15:30:26,700 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 96 transitions. Word has length 53 [2020-08-18 15:30:26,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:30:26,701 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 96 transitions. [2020-08-18 15:30:26,701 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 15:30:26,701 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 96 transitions. [2020-08-18 15:30:26,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-18 15:30:26,702 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:30:26,702 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-08-18 15:30:26,703 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 15:30:26,703 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:30:26,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:30:26,703 INFO L82 PathProgramCache]: Analyzing trace with hash 1747730134, now seen corresponding path program 1 times [2020-08-18 15:30:26,704 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:30:26,704 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [329755146] [2020-08-18 15:30:26,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:30:26,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:30:26,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:30:26,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:30:26,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-18 15:30:26,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:30:26,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 15:30:26,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:30:26,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 15:30:26,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:30:26,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 15:30:26,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:30:26,923 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-08-18 15:30:26,923 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [329755146] [2020-08-18 15:30:26,923 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 15:30:26,925 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-18 15:30:26,925 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081006234] [2020-08-18 15:30:26,926 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-18 15:30:26,926 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:30:26,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-18 15:30:26,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-08-18 15:30:26,927 INFO L87 Difference]: Start difference. First operand 79 states and 96 transitions. Second operand 15 states. [2020-08-18 15:30:27,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:30:27,537 INFO L93 Difference]: Finished difference Result 96 states and 116 transitions. [2020-08-18 15:30:27,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 15:30:27,541 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 53 [2020-08-18 15:30:27,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:30:27,543 INFO L225 Difference]: With dead ends: 96 [2020-08-18 15:30:27,543 INFO L226 Difference]: Without dead ends: 92 [2020-08-18 15:30:27,545 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=83, Invalid=469, Unknown=0, NotChecked=0, Total=552 [2020-08-18 15:30:27,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-08-18 15:30:27,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 80. [2020-08-18 15:30:27,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-08-18 15:30:27,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 98 transitions. [2020-08-18 15:30:27,568 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 98 transitions. Word has length 53 [2020-08-18 15:30:27,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:30:27,568 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 98 transitions. [2020-08-18 15:30:27,569 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-18 15:30:27,571 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 98 transitions. [2020-08-18 15:30:27,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-08-18 15:30:27,572 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:30:27,573 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-08-18 15:30:27,573 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 15:30:27,573 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:30:27,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:30:27,574 INFO L82 PathProgramCache]: Analyzing trace with hash 645381370, now seen corresponding path program 2 times [2020-08-18 15:30:27,579 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:30:27,579 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [801701609] [2020-08-18 15:30:27,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:30:27,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:30:27,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:30:27,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:30:27,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-18 15:30:27,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:30:27,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 15:30:27,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:30:27,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 15:30:27,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:30:27,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 15:30:27,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:30:27,916 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-08-18 15:30:27,917 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [801701609] [2020-08-18 15:30:27,917 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 15:30:27,917 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-08-18 15:30:27,918 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059260147] [2020-08-18 15:30:27,918 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-18 15:30:27,918 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:30:27,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-18 15:30:27,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2020-08-18 15:30:27,919 INFO L87 Difference]: Start difference. First operand 80 states and 98 transitions. Second operand 17 states. [2020-08-18 15:30:28,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:30:28,956 INFO L93 Difference]: Finished difference Result 135 states and 174 transitions. [2020-08-18 15:30:28,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-18 15:30:28,956 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 54 [2020-08-18 15:30:28,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:30:28,958 INFO L225 Difference]: With dead ends: 135 [2020-08-18 15:30:28,959 INFO L226 Difference]: Without dead ends: 131 [2020-08-18 15:30:28,960 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=117, Invalid=695, Unknown=0, NotChecked=0, Total=812 [2020-08-18 15:30:28,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-08-18 15:30:28,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 94. [2020-08-18 15:30:28,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-08-18 15:30:28,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 118 transitions. [2020-08-18 15:30:28,977 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 118 transitions. Word has length 54 [2020-08-18 15:30:28,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:30:28,978 INFO L479 AbstractCegarLoop]: Abstraction has 94 states and 118 transitions. [2020-08-18 15:30:28,978 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-08-18 15:30:28,978 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 118 transitions. [2020-08-18 15:30:28,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-08-18 15:30:28,979 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:30:28,979 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-08-18 15:30:28,980 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 15:30:28,980 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:30:28,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:30:28,980 INFO L82 PathProgramCache]: Analyzing trace with hash 832308054, now seen corresponding path program 3 times [2020-08-18 15:30:28,980 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:30:28,981 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1506129168] [2020-08-18 15:30:28,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:30:29,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:30:29,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:30:29,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:30:29,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-18 15:30:29,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:30:29,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 15:30:29,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:30:29,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 15:30:29,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:30:29,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 15:30:29,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:30:29,386 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-08-18 15:30:29,386 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1506129168] [2020-08-18 15:30:29,386 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 15:30:29,387 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-08-18 15:30:29,387 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488499825] [2020-08-18 15:30:29,387 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-18 15:30:29,388 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:30:29,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-18 15:30:29,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2020-08-18 15:30:29,389 INFO L87 Difference]: Start difference. First operand 94 states and 118 transitions. Second operand 17 states. [2020-08-18 15:30:30,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:30:30,361 INFO L93 Difference]: Finished difference Result 137 states and 173 transitions. [2020-08-18 15:30:30,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 15:30:30,364 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 55 [2020-08-18 15:30:30,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:30:30,365 INFO L225 Difference]: With dead ends: 137 [2020-08-18 15:30:30,365 INFO L226 Difference]: Without dead ends: 127 [2020-08-18 15:30:30,366 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=78, Invalid=572, Unknown=0, NotChecked=0, Total=650 [2020-08-18 15:30:30,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-08-18 15:30:30,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 115. [2020-08-18 15:30:30,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-08-18 15:30:30,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 147 transitions. [2020-08-18 15:30:30,380 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 147 transitions. Word has length 55 [2020-08-18 15:30:30,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:30:30,380 INFO L479 AbstractCegarLoop]: Abstraction has 115 states and 147 transitions. [2020-08-18 15:30:30,380 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-08-18 15:30:30,381 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 147 transitions. [2020-08-18 15:30:30,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-18 15:30:30,382 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:30:30,382 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2020-08-18 15:30:30,382 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 15:30:30,383 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:30:30,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:30:30,383 INFO L82 PathProgramCache]: Analyzing trace with hash 1162383005, now seen corresponding path program 1 times [2020-08-18 15:30:30,383 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:30:30,383 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [160402512] [2020-08-18 15:30:30,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:30:30,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:30:30,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:30:30,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:30:30,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-18 15:30:30,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:30:30,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 15:30:30,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:30:30,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 15:30:30,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:30:30,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-18 15:30:30,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:30:30,599 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-08-18 15:30:30,600 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [160402512] [2020-08-18 15:30:30,600 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 15:30:30,600 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-18 15:30:30,600 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972392410] [2020-08-18 15:30:30,601 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 15:30:30,601 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:30:30,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 15:30:30,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-08-18 15:30:30,602 INFO L87 Difference]: Start difference. First operand 115 states and 147 transitions. Second operand 12 states. [2020-08-18 15:30:31,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:30:31,513 INFO L93 Difference]: Finished difference Result 225 states and 300 transitions. [2020-08-18 15:30:31,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 15:30:31,513 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 57 [2020-08-18 15:30:31,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:30:31,515 INFO L225 Difference]: With dead ends: 225 [2020-08-18 15:30:31,515 INFO L226 Difference]: Without dead ends: 161 [2020-08-18 15:30:31,517 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=141, Invalid=459, Unknown=0, NotChecked=0, Total=600 [2020-08-18 15:30:31,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-08-18 15:30:31,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 129. [2020-08-18 15:30:31,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-08-18 15:30:31,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 167 transitions. [2020-08-18 15:30:31,552 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 167 transitions. Word has length 57 [2020-08-18 15:30:31,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:30:31,554 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 167 transitions. [2020-08-18 15:30:31,554 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 15:30:31,554 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 167 transitions. [2020-08-18 15:30:31,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-18 15:30:31,558 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:30:31,558 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-08-18 15:30:31,559 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 15:30:31,559 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:30:31,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:30:31,559 INFO L82 PathProgramCache]: Analyzing trace with hash 1585084831, now seen corresponding path program 1 times [2020-08-18 15:30:31,560 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:30:31,560 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [637155160] [2020-08-18 15:30:31,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:30:31,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 15:30:31,595 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 15:30:31,596 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 15:30:31,600 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-18 15:30:31,629 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 03:30:31 BoogieIcfgContainer [2020-08-18 15:30:31,629 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 15:30:31,632 INFO L168 Benchmark]: Toolchain (without parser) took 12023.65 ms. Allocated memory was 139.5 MB in the beginning and 343.9 MB in the end (delta: 204.5 MB). Free memory was 100.9 MB in the beginning and 198.4 MB in the end (delta: -97.6 MB). Peak memory consumption was 106.9 MB. Max. memory is 7.1 GB. [2020-08-18 15:30:31,637 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-18 15:30:31,638 INFO L168 Benchmark]: CACSL2BoogieTranslator took 735.89 ms. Allocated memory was 139.5 MB in the beginning and 203.9 MB in the end (delta: 64.5 MB). Free memory was 100.6 MB in the beginning and 169.1 MB in the end (delta: -68.5 MB). Peak memory consumption was 25.1 MB. Max. memory is 7.1 GB. [2020-08-18 15:30:31,639 INFO L168 Benchmark]: Boogie Preprocessor took 67.46 ms. Allocated memory is still 203.9 MB. Free memory was 169.1 MB in the beginning and 165.8 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. [2020-08-18 15:30:31,639 INFO L168 Benchmark]: RCFGBuilder took 736.88 ms. Allocated memory is still 203.9 MB. Free memory was 165.8 MB in the beginning and 114.9 MB in the end (delta: 50.9 MB). Peak memory consumption was 50.9 MB. Max. memory is 7.1 GB. [2020-08-18 15:30:31,642 INFO L168 Benchmark]: TraceAbstraction took 10478.58 ms. Allocated memory was 203.9 MB in the beginning and 343.9 MB in the end (delta: 140.0 MB). Free memory was 114.3 MB in the beginning and 198.4 MB in the end (delta: -84.1 MB). Peak memory consumption was 55.8 MB. Max. memory is 7.1 GB. [2020-08-18 15:30:31,657 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 735.89 ms. Allocated memory was 139.5 MB in the beginning and 203.9 MB in the end (delta: 64.5 MB). Free memory was 100.6 MB in the beginning and 169.1 MB in the end (delta: -68.5 MB). Peak memory consumption was 25.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 67.46 ms. Allocated memory is still 203.9 MB. Free memory was 169.1 MB in the beginning and 165.8 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 736.88 ms. Allocated memory is still 203.9 MB. Free memory was 165.8 MB in the beginning and 114.9 MB in the end (delta: 50.9 MB). Peak memory consumption was 50.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 10478.58 ms. Allocated memory was 203.9 MB in the beginning and 343.9 MB in the end (delta: 140.0 MB). Free memory was 114.3 MB in the beginning and 198.4 MB in the end (delta: -84.1 MB). Peak memory consumption was 55.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 630]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L616] CALL, EXPR _get_nondet_int(2, 5) [L609] int len = from; [L610] len < until && __VERIFIER_nondet_int() [L610] len < until && __VERIFIER_nondet_int() [L610] COND FALSE !(len < until && __VERIFIER_nondet_int()) [L613] return len; [L616] RET, EXPR _get_nondet_int(2, 5) [L616] const int len = _get_nondet_int(2, 5); [L617] SLL s = sll_create(len); [L617] CALL, EXPR sll_create(len) [L564] SLL head = ((void *)0); [L565] EXPR len-- [L565] COND TRUE len-- > 0 [L566] SLL new_head = (SLL) malloc(sizeof(struct node)); [L567] COND FALSE !(((void *)0) == new_head) [L570] new_head->next = head [L571] head = new_head [L565] EXPR len-- [L565] COND TRUE len-- > 0 [L566] SLL new_head = (SLL) malloc(sizeof(struct node)); [L567] COND FALSE !(((void *)0) == new_head) [L570] new_head->next = head [L571] head = new_head [L565] EXPR len-- [L565] COND FALSE !(len-- > 0) [L573] return head; [L617] RET, EXPR sll_create(len) [L617] SLL s = sll_create(len); [L618] CALL, EXPR _get_nondet_int(0, len - 1) [L609] int len = from; [L610] len < until && __VERIFIER_nondet_int() [L610] len < until && __VERIFIER_nondet_int() [L610] COND TRUE len < until && __VERIFIER_nondet_int() [L611] len++ [L610] len < until && __VERIFIER_nondet_int() [L610] COND FALSE !(len < until && __VERIFIER_nondet_int()) [L613] return len; [L618] RET, EXPR _get_nondet_int(0, len - 1) [L618] const int k = _get_nondet_int(0, len - 1); [L619] int i = 0; [L620] i < k && __VERIFIER_nondet_int() [L620] i < k && __VERIFIER_nondet_int() [L620] COND FALSE !(i < k && __VERIFIER_nondet_int()) [L625] EXPR \read(s) [L625] CALL, EXPR sll_length(s) [L576] int len = 0; [L577] COND TRUE \read(head) [L578] len++ [L579] EXPR head->next [L579] head = head->next [L577] COND TRUE \read(head) [L578] len++ [L579] EXPR head->next [L579] head = head->next [L577] COND FALSE !(\read(head)) [L581] return len; [L625] RET, EXPR sll_length(s) [L625] COND TRUE k + len != sll_length(s) [L630] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 11 procedures, 74 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 10.3s, OverallIterations: 12, TraceHistogramMax: 3, AutomataDifference: 7.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 685 SDtfs, 856 SDslu, 3907 SDs, 0 SdLazy, 4775 SolverSat, 414 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 329 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 3.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=129occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 237 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 608 NumberOfCodeBlocks, 608 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 540 ConstructedInterpolants, 0 QuantifiedInterpolants, 136172 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 3 PerfectInterpolantSequences, 79/159 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...