/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 --rcfgbuilder.size.of.a.code.block SingleStatement --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_length_check-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 14:59:38,184 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 14:59:38,188 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 14:59:38,215 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 14:59:38,215 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 14:59:38,216 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 14:59:38,221 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 14:59:38,223 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 14:59:38,228 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 14:59:38,229 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 14:59:38,233 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 14:59:38,235 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 14:59:38,235 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 14:59:38,236 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 14:59:38,237 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 14:59:38,238 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 14:59:38,239 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 14:59:38,240 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 14:59:38,242 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 14:59:38,243 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 14:59:38,245 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 14:59:38,246 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 14:59:38,247 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 14:59:38,248 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 14:59:38,251 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 14:59:38,251 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 14:59:38,251 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 14:59:38,252 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 14:59:38,253 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 14:59:38,254 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 14:59:38,254 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 14:59:38,255 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 14:59:38,256 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 14:59:38,256 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 14:59:38,257 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 14:59:38,258 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 14:59:38,258 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 14:59:38,259 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 14:59:38,259 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 14:59:38,260 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 14:59:38,261 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 14:59:38,262 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 [2020-09-24 14:59:38,294 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 14:59:38,295 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 14:59:38,297 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 14:59:38,297 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 14:59:38,297 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 14:59:38,297 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 14:59:38,298 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 14:59:38,298 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 14:59:38,298 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 14:59:38,298 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 14:59:38,298 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 14:59:38,299 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 14:59:38,300 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 14:59:38,300 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 14:59:38,300 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 14:59:38,300 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 14:59:38,301 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 14:59:38,301 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 14:59:38,301 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 14:59:38,301 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 14:59:38,301 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 14:59:38,303 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 14:59:38,303 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 14:59:38,303 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 14:59:38,304 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 14:59:38,304 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 14:59:38,304 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 14:59:38,304 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 14:59:38,305 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 14:59:38,305 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.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> false [2020-09-24 14:59:38,826 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 14:59:38,845 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 14:59:38,850 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 14:59:38,851 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 14:59:38,852 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 14:59:38,853 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext3-properties/sll_length_check-1.i [2020-09-24 14:59:38,932 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0e4963005/1b15047d76364b6db37e1b6d0b9b074f/FLAG9cc9f4b62 [2020-09-24 14:59:39,571 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 14:59:39,572 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-ext3-properties/sll_length_check-1.i [2020-09-24 14:59:39,589 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0e4963005/1b15047d76364b6db37e1b6d0b9b074f/FLAG9cc9f4b62 [2020-09-24 14:59:39,776 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0e4963005/1b15047d76364b6db37e1b6d0b9b074f [2020-09-24 14:59:39,790 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 14:59:39,796 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 14:59:39,798 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 14:59:39,798 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 14:59:39,802 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 14:59:39,804 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 02:59:39" (1/1) ... [2020-09-24 14:59:39,808 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f2210ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:59:39, skipping insertion in model container [2020-09-24 14:59:39,808 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 02:59:39" (1/1) ... [2020-09-24 14:59:39,818 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 14:59:39,868 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 14:59:40,365 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 14:59:40,376 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 14:59:40,449 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 14:59:40,519 INFO L208 MainTranslator]: Completed translation [2020-09-24 14:59:40,521 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:59:40 WrapperNode [2020-09-24 14:59:40,521 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 14:59:40,522 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 14:59:40,522 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 14:59:40,522 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 14:59:40,540 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:59:40" (1/1) ... [2020-09-24 14:59:40,541 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:59:40" (1/1) ... [2020-09-24 14:59:40,559 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:59:40" (1/1) ... [2020-09-24 14:59:40,559 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:59:40" (1/1) ... [2020-09-24 14:59:40,574 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:59:40" (1/1) ... [2020-09-24 14:59:40,580 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:59:40" (1/1) ... [2020-09-24 14:59:40,584 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:59:40" (1/1) ... [2020-09-24 14:59:40,590 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 14:59:40,591 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 14:59:40,591 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 14:59:40,591 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 14:59:40,593 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:59:40" (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 [2020-09-24 14:59:40,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 14:59:40,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 14:59:40,676 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-09-24 14:59:40,676 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-09-24 14:59:40,676 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-09-24 14:59:40,676 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2020-09-24 14:59:40,677 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_length [2020-09-24 14:59:40,677 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_destroy [2020-09-24 14:59:40,677 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 14:59:40,677 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 14:59:40,677 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 14:59:40,678 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-09-24 14:59:40,678 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-09-24 14:59:40,678 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-24 14:59:40,678 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-24 14:59:40,678 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-24 14:59:40,679 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-24 14:59:40,679 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-24 14:59:40,679 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-24 14:59:40,679 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-24 14:59:40,680 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-24 14:59:40,680 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-24 14:59:40,680 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-24 14:59:40,680 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-24 14:59:40,680 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-24 14:59:40,681 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-24 14:59:40,681 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-24 14:59:40,681 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-24 14:59:40,681 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-24 14:59:40,681 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-24 14:59:40,681 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-24 14:59:40,682 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-24 14:59:40,682 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-24 14:59:40,682 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-24 14:59:40,682 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-24 14:59:40,682 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-24 14:59:40,682 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-24 14:59:40,683 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-24 14:59:40,683 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-24 14:59:40,683 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-24 14:59:40,683 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-24 14:59:40,683 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-24 14:59:40,683 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-24 14:59:40,684 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-24 14:59:40,684 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-24 14:59:40,684 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-24 14:59:40,684 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-24 14:59:40,684 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-24 14:59:40,685 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-24 14:59:40,685 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-24 14:59:40,685 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-24 14:59:40,685 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-24 14:59:40,685 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-24 14:59:40,685 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-24 14:59:40,685 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-24 14:59:40,686 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-24 14:59:40,686 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-24 14:59:40,686 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-24 14:59:40,686 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-24 14:59:40,686 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-24 14:59:40,687 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-24 14:59:40,687 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-24 14:59:40,687 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-24 14:59:40,687 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 14:59:40,687 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-24 14:59:40,687 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-24 14:59:40,688 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 14:59:40,688 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-24 14:59:40,688 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-24 14:59:40,688 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-24 14:59:40,688 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-24 14:59:40,688 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-24 14:59:40,689 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 14:59:40,689 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-24 14:59:40,689 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-24 14:59:40,689 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-24 14:59:40,689 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 14:59:40,690 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-24 14:59:40,690 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-24 14:59:40,690 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-24 14:59:40,690 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-24 14:59:40,690 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-24 14:59:40,690 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-24 14:59:40,691 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-24 14:59:40,691 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-24 14:59:40,691 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-24 14:59:40,691 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-24 14:59:40,691 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-24 14:59:40,691 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-24 14:59:40,692 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-24 14:59:40,692 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-24 14:59:40,692 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-24 14:59:40,692 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-24 14:59:40,692 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-24 14:59:40,692 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-24 14:59:40,692 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-24 14:59:40,692 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-24 14:59:40,692 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-24 14:59:40,693 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-24 14:59:40,693 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-24 14:59:40,693 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-24 14:59:40,693 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-24 14:59:40,693 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-24 14:59:40,693 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-24 14:59:40,693 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-24 14:59:40,693 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-24 14:59:40,693 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-24 14:59:40,694 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-24 14:59:40,694 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-24 14:59:40,694 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-24 14:59:40,694 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-24 14:59:40,694 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-24 14:59:40,694 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-24 14:59:40,694 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-24 14:59:40,694 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-24 14:59:40,694 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-24 14:59:40,695 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-09-24 14:59:40,695 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2020-09-24 14:59:40,695 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 14:59:40,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 14:59:40,695 INFO L130 BoogieDeclarations]: Found specification of procedure sll_length [2020-09-24 14:59:40,696 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 14:59:40,696 INFO L130 BoogieDeclarations]: Found specification of procedure sll_destroy [2020-09-24 14:59:40,696 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 14:59:40,696 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 14:59:40,696 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 14:59:40,696 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 14:59:41,140 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-09-24 14:59:41,349 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 14:59:41,349 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-09-24 14:59:41,360 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 02:59:41 BoogieIcfgContainer [2020-09-24 14:59:41,360 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 14:59:41,362 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 14:59:41,362 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 14:59:41,368 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 14:59:41,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 02:59:39" (1/3) ... [2020-09-24 14:59:41,369 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a52e9a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 02:59:41, skipping insertion in model container [2020-09-24 14:59:41,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:59:40" (2/3) ... [2020-09-24 14:59:41,370 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a52e9a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 02:59:41, skipping insertion in model container [2020-09-24 14:59:41,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 02:59:41" (3/3) ... [2020-09-24 14:59:41,373 INFO L109 eAbstractionObserver]: Analyzing ICFG sll_length_check-1.i [2020-09-24 14:59:41,387 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 14:59:41,399 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 14:59:41,432 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 14:59:41,472 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 14:59:41,472 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 14:59:41,473 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 14:59:41,473 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 14:59:41,473 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 14:59:41,473 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 14:59:41,473 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 14:59:41,474 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 14:59:41,507 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states. [2020-09-24 14:59:41,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-24 14:59:41,519 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:59:41,520 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:59:41,521 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:59:41,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:59:41,529 INFO L82 PathProgramCache]: Analyzing trace with hash 1731717969, now seen corresponding path program 1 times [2020-09-24 14:59:41,541 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:59:41,541 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1699773554] [2020-09-24 14:59:41,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:59:41,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:59:41,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:59:41,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:59:41,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 14:59:41,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:59:41,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-24 14:59:41,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:59:41,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:59:41,828 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1699773554] [2020-09-24 14:59:41,831 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:59:41,831 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 14:59:41,832 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765086997] [2020-09-24 14:59:41,839 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 14:59:41,839 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:59:41,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 14:59:41,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 14:59:41,861 INFO L87 Difference]: Start difference. First operand 75 states. Second operand 4 states. [2020-09-24 14:59:42,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:59:42,120 INFO L93 Difference]: Finished difference Result 154 states and 184 transitions. [2020-09-24 14:59:42,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 14:59:42,122 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2020-09-24 14:59:42,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:59:42,134 INFO L225 Difference]: With dead ends: 154 [2020-09-24 14:59:42,135 INFO L226 Difference]: Without dead ends: 68 [2020-09-24 14:59:42,140 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 14:59:42,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-09-24 14:59:42,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 55. [2020-09-24 14:59:42,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-09-24 14:59:42,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 58 transitions. [2020-09-24 14:59:42,200 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 58 transitions. Word has length 29 [2020-09-24 14:59:42,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:59:42,200 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 58 transitions. [2020-09-24 14:59:42,201 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 14:59:42,201 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 58 transitions. [2020-09-24 14:59:42,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-24 14:59:42,202 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:59:42,202 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:59:42,203 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 14:59:42,203 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:59:42,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:59:42,204 INFO L82 PathProgramCache]: Analyzing trace with hash 632987872, now seen corresponding path program 1 times [2020-09-24 14:59:42,204 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:59:42,204 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [363838721] [2020-09-24 14:59:42,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:59:42,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:59:42,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:59:42,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:59:42,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-09-24 14:59:42,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:59:42,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-24 14:59:42,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:59:42,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:59:42,340 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [363838721] [2020-09-24 14:59:42,341 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:59:42,341 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 14:59:42,341 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775549763] [2020-09-24 14:59:42,343 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 14:59:42,343 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:59:42,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 14:59:42,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 14:59:42,344 INFO L87 Difference]: Start difference. First operand 55 states and 58 transitions. Second operand 6 states. [2020-09-24 14:59:42,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:59:42,692 INFO L93 Difference]: Finished difference Result 143 states and 154 transitions. [2020-09-24 14:59:42,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 14:59:42,693 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-09-24 14:59:42,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:59:42,695 INFO L225 Difference]: With dead ends: 143 [2020-09-24 14:59:42,695 INFO L226 Difference]: Without dead ends: 96 [2020-09-24 14:59:42,697 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-09-24 14:59:42,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-09-24 14:59:42,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 57. [2020-09-24 14:59:42,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-09-24 14:59:42,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 60 transitions. [2020-09-24 14:59:42,709 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 60 transitions. Word has length 33 [2020-09-24 14:59:42,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:59:42,710 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 60 transitions. [2020-09-24 14:59:42,710 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 14:59:42,710 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 60 transitions. [2020-09-24 14:59:42,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-24 14:59:42,712 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:59:42,712 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:59:42,712 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 14:59:42,712 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:59:42,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:59:42,713 INFO L82 PathProgramCache]: Analyzing trace with hash -1134974621, now seen corresponding path program 1 times [2020-09-24 14:59:42,713 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:59:42,713 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2082503736] [2020-09-24 14:59:42,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:59:42,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:59:42,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:59:42,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:59:42,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-24 14:59:42,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:59:42,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-24 14:59:42,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:59:42,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:59:42,935 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2082503736] [2020-09-24 14:59:42,935 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:59:42,936 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 14:59:42,938 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726923042] [2020-09-24 14:59:42,938 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 14:59:42,942 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:59:42,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 14:59:42,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-24 14:59:42,943 INFO L87 Difference]: Start difference. First operand 57 states and 60 transitions. Second operand 7 states. [2020-09-24 14:59:43,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:59:43,326 INFO L93 Difference]: Finished difference Result 114 states and 121 transitions. [2020-09-24 14:59:43,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 14:59:43,326 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-09-24 14:59:43,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:59:43,330 INFO L225 Difference]: With dead ends: 114 [2020-09-24 14:59:43,330 INFO L226 Difference]: Without dead ends: 94 [2020-09-24 14:59:43,333 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-24 14:59:43,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-09-24 14:59:43,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 67. [2020-09-24 14:59:43,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-09-24 14:59:43,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 73 transitions. [2020-09-24 14:59:43,350 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 73 transitions. Word has length 35 [2020-09-24 14:59:43,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:59:43,350 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 73 transitions. [2020-09-24 14:59:43,351 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 14:59:43,351 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 73 transitions. [2020-09-24 14:59:43,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-24 14:59:43,354 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:59:43,354 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:59:43,354 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 14:59:43,354 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:59:43,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:59:43,355 INFO L82 PathProgramCache]: Analyzing trace with hash 226602169, now seen corresponding path program 1 times [2020-09-24 14:59:43,355 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:59:43,355 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1405998215] [2020-09-24 14:59:43,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:59:43,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:59:43,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:59:43,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:59:43,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-24 14:59:43,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:59:43,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-09-24 14:59:43,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:59:43,483 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:59:43,484 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1405998215] [2020-09-24 14:59:43,484 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 14:59:43,484 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 14:59:43,485 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105952275] [2020-09-24 14:59:43,485 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 14:59:43,485 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:59:43,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 14:59:43,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-24 14:59:43,486 INFO L87 Difference]: Start difference. First operand 67 states and 73 transitions. Second operand 8 states. [2020-09-24 14:59:44,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:59:44,023 INFO L93 Difference]: Finished difference Result 168 states and 182 transitions. [2020-09-24 14:59:44,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-24 14:59:44,027 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 43 [2020-09-24 14:59:44,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:59:44,029 INFO L225 Difference]: With dead ends: 168 [2020-09-24 14:59:44,029 INFO L226 Difference]: Without dead ends: 117 [2020-09-24 14:59:44,030 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2020-09-24 14:59:44,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-09-24 14:59:44,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 74. [2020-09-24 14:59:44,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-09-24 14:59:44,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 80 transitions. [2020-09-24 14:59:44,043 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 80 transitions. Word has length 43 [2020-09-24 14:59:44,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:59:44,043 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 80 transitions. [2020-09-24 14:59:44,043 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 14:59:44,044 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 80 transitions. [2020-09-24 14:59:44,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-09-24 14:59:44,045 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:59:44,045 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:59:44,045 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 14:59:44,046 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:59:44,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:59:44,046 INFO L82 PathProgramCache]: Analyzing trace with hash 360366586, now seen corresponding path program 1 times [2020-09-24 14:59:44,046 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:59:44,047 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2019595412] [2020-09-24 14:59:44,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:59:44,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:59:44,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:59:44,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:59:44,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-24 14:59:44,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:59:44,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-24 14:59:44,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:59:44,362 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:59:44,362 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2019595412] [2020-09-24 14:59:44,362 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:59:44,362 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-09-24 14:59:44,363 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984564175] [2020-09-24 14:59:44,363 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 14:59:44,363 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:59:44,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 14:59:44,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-09-24 14:59:44,364 INFO L87 Difference]: Start difference. First operand 74 states and 80 transitions. Second operand 12 states. [2020-09-24 14:59:44,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:59:44,992 INFO L93 Difference]: Finished difference Result 101 states and 108 transitions. [2020-09-24 14:59:44,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-24 14:59:44,994 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 44 [2020-09-24 14:59:44,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:59:44,997 INFO L225 Difference]: With dead ends: 101 [2020-09-24 14:59:44,997 INFO L226 Difference]: Without dead ends: 96 [2020-09-24 14:59:44,998 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2020-09-24 14:59:44,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-09-24 14:59:45,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 81. [2020-09-24 14:59:45,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-09-24 14:59:45,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 89 transitions. [2020-09-24 14:59:45,012 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 89 transitions. Word has length 44 [2020-09-24 14:59:45,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:59:45,013 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 89 transitions. [2020-09-24 14:59:45,013 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 14:59:45,013 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 89 transitions. [2020-09-24 14:59:45,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-09-24 14:59:45,015 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:59:45,015 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:59:45,015 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 14:59:45,016 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:59:45,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:59:45,016 INFO L82 PathProgramCache]: Analyzing trace with hash -829611268, now seen corresponding path program 1 times [2020-09-24 14:59:45,016 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:59:45,017 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [203986292] [2020-09-24 14:59:45,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:59:45,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:59:45,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:59:45,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:59:45,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-24 14:59:45,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:59:45,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-24 14:59:45,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:59:45,145 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:59:45,146 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [203986292] [2020-09-24 14:59:45,146 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:59:45,146 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-24 14:59:45,146 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997048958] [2020-09-24 14:59:45,147 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 14:59:45,147 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:59:45,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 14:59:45,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-24 14:59:45,148 INFO L87 Difference]: Start difference. First operand 81 states and 89 transitions. Second operand 9 states. [2020-09-24 14:59:45,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:59:45,582 INFO L93 Difference]: Finished difference Result 117 states and 124 transitions. [2020-09-24 14:59:45,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-24 14:59:45,582 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 45 [2020-09-24 14:59:45,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:59:45,584 INFO L225 Difference]: With dead ends: 117 [2020-09-24 14:59:45,584 INFO L226 Difference]: Without dead ends: 87 [2020-09-24 14:59:45,588 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2020-09-24 14:59:45,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-09-24 14:59:45,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 69. [2020-09-24 14:59:45,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-09-24 14:59:45,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2020-09-24 14:59:45,609 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 45 [2020-09-24 14:59:45,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:59:45,612 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2020-09-24 14:59:45,612 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 14:59:45,612 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2020-09-24 14:59:45,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-24 14:59:45,614 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:59:45,617 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:59:45,617 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 14:59:45,617 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:59:45,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:59:45,618 INFO L82 PathProgramCache]: Analyzing trace with hash -642872939, now seen corresponding path program 1 times [2020-09-24 14:59:45,618 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:59:45,618 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1973284149] [2020-09-24 14:59:45,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:59:45,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:59:45,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:59:45,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:59:45,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-24 14:59:45,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:59:45,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-24 14:59:45,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:59:45,777 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 14:59:45,778 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1973284149] [2020-09-24 14:59:45,778 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 14:59:45,778 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 14:59:45,778 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945832143] [2020-09-24 14:59:45,779 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 14:59:45,779 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:59:45,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 14:59:45,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-24 14:59:45,780 INFO L87 Difference]: Start difference. First operand 69 states and 73 transitions. Second operand 9 states. [2020-09-24 14:59:46,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:59:46,147 INFO L93 Difference]: Finished difference Result 120 states and 127 transitions. [2020-09-24 14:59:46,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 14:59:46,147 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 51 [2020-09-24 14:59:46,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:59:46,153 INFO L225 Difference]: With dead ends: 120 [2020-09-24 14:59:46,153 INFO L226 Difference]: Without dead ends: 99 [2020-09-24 14:59:46,154 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2020-09-24 14:59:46,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-09-24 14:59:46,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 84. [2020-09-24 14:59:46,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-09-24 14:59:46,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 90 transitions. [2020-09-24 14:59:46,176 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 90 transitions. Word has length 51 [2020-09-24 14:59:46,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:59:46,176 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 90 transitions. [2020-09-24 14:59:46,176 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 14:59:46,176 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 90 transitions. [2020-09-24 14:59:46,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-09-24 14:59:46,183 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:59:46,183 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:59:46,183 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 14:59:46,183 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:59:46,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:59:46,184 INFO L82 PathProgramCache]: Analyzing trace with hash 1372689452, now seen corresponding path program 2 times [2020-09-24 14:59:46,184 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:59:46,184 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [424545918] [2020-09-24 14:59:46,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:59:46,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:59:46,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:59:46,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:59:46,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-24 14:59:46,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:59:46,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-24 14:59:46,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:59:46,403 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 14:59:46,403 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [424545918] [2020-09-24 14:59:46,404 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 14:59:46,404 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-24 14:59:46,404 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122980803] [2020-09-24 14:59:46,405 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 14:59:46,405 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:59:46,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 14:59:46,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-09-24 14:59:46,405 INFO L87 Difference]: Start difference. First operand 84 states and 90 transitions. Second operand 11 states. [2020-09-24 14:59:46,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:59:46,766 INFO L93 Difference]: Finished difference Result 132 states and 140 transitions. [2020-09-24 14:59:46,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-24 14:59:46,767 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 60 [2020-09-24 14:59:46,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:59:46,769 INFO L225 Difference]: With dead ends: 132 [2020-09-24 14:59:46,769 INFO L226 Difference]: Without dead ends: 111 [2020-09-24 14:59:46,770 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2020-09-24 14:59:46,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-09-24 14:59:46,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 93. [2020-09-24 14:59:46,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-09-24 14:59:46,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 100 transitions. [2020-09-24 14:59:46,782 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 100 transitions. Word has length 60 [2020-09-24 14:59:46,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:59:46,782 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 100 transitions. [2020-09-24 14:59:46,782 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 14:59:46,783 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 100 transitions. [2020-09-24 14:59:46,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-09-24 14:59:46,784 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:59:46,785 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:59:46,785 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 14:59:46,785 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:59:46,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:59:46,786 INFO L82 PathProgramCache]: Analyzing trace with hash -1521110738, now seen corresponding path program 1 times [2020-09-24 14:59:46,786 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:59:46,786 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [11054842] [2020-09-24 14:59:46,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:59:46,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:59:46,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:59:46,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:59:46,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-24 14:59:46,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:59:46,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-24 14:59:46,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:59:46,954 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 14:59:46,955 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [11054842] [2020-09-24 14:59:46,955 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 14:59:46,955 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-24 14:59:46,955 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935296627] [2020-09-24 14:59:46,956 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 14:59:46,956 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:59:46,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 14:59:46,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-09-24 14:59:46,957 INFO L87 Difference]: Start difference. First operand 93 states and 100 transitions. Second operand 11 states. [2020-09-24 14:59:47,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:59:47,477 INFO L93 Difference]: Finished difference Result 125 states and 132 transitions. [2020-09-24 14:59:47,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-24 14:59:47,478 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 61 [2020-09-24 14:59:47,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:59:47,480 INFO L225 Difference]: With dead ends: 125 [2020-09-24 14:59:47,483 INFO L226 Difference]: Without dead ends: 101 [2020-09-24 14:59:47,484 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2020-09-24 14:59:47,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-09-24 14:59:47,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 93. [2020-09-24 14:59:47,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-09-24 14:59:47,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 99 transitions. [2020-09-24 14:59:47,499 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 99 transitions. Word has length 61 [2020-09-24 14:59:47,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:59:47,500 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 99 transitions. [2020-09-24 14:59:47,500 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 14:59:47,500 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 99 transitions. [2020-09-24 14:59:47,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-24 14:59:47,502 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:59:47,503 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:59:47,503 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 14:59:47,504 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:59:47,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:59:47,504 INFO L82 PathProgramCache]: Analyzing trace with hash 1187742581, now seen corresponding path program 3 times [2020-09-24 14:59:47,505 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:59:47,506 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [38307326] [2020-09-24 14:59:47,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:59:47,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:59:47,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:59:47,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:59:47,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-24 14:59:47,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:59:47,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-24 14:59:47,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:59:47,834 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 20 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-24 14:59:47,834 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [38307326] [2020-09-24 14:59:47,835 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 14:59:47,835 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-24 14:59:47,836 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379657442] [2020-09-24 14:59:47,837 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-24 14:59:47,837 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:59:47,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-24 14:59:47,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2020-09-24 14:59:47,838 INFO L87 Difference]: Start difference. First operand 93 states and 99 transitions. Second operand 17 states. [2020-09-24 14:59:48,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:59:48,770 INFO L93 Difference]: Finished difference Result 113 states and 119 transitions. [2020-09-24 14:59:48,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-24 14:59:48,770 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 69 [2020-09-24 14:59:48,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:59:48,772 INFO L225 Difference]: With dead ends: 113 [2020-09-24 14:59:48,772 INFO L226 Difference]: Without dead ends: 105 [2020-09-24 14:59:48,774 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=163, Invalid=893, Unknown=0, NotChecked=0, Total=1056 [2020-09-24 14:59:48,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-09-24 14:59:48,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 100. [2020-09-24 14:59:48,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-09-24 14:59:48,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 106 transitions. [2020-09-24 14:59:48,785 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 106 transitions. Word has length 69 [2020-09-24 14:59:48,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:59:48,786 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 106 transitions. [2020-09-24 14:59:48,786 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-24 14:59:48,786 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 106 transitions. [2020-09-24 14:59:48,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-09-24 14:59:48,788 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:59:48,788 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:59:48,788 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 14:59:48,788 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:59:48,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:59:48,789 INFO L82 PathProgramCache]: Analyzing trace with hash 979580858, now seen corresponding path program 4 times [2020-09-24 14:59:48,789 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:59:48,789 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [328758360] [2020-09-24 14:59:48,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:59:48,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:59:48,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:59:48,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:59:48,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-24 14:59:48,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:59:48,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-24 14:59:48,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:59:49,073 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-09-24 14:59:49,074 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [328758360] [2020-09-24 14:59:49,074 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 14:59:49,074 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-24 14:59:49,074 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033906911] [2020-09-24 14:59:49,075 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 14:59:49,075 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:59:49,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 14:59:49,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-09-24 14:59:49,076 INFO L87 Difference]: Start difference. First operand 100 states and 106 transitions. Second operand 12 states. [2020-09-24 14:59:49,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:59:49,761 INFO L93 Difference]: Finished difference Result 125 states and 132 transitions. [2020-09-24 14:59:49,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-24 14:59:49,761 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 76 [2020-09-24 14:59:49,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:59:49,763 INFO L225 Difference]: With dead ends: 125 [2020-09-24 14:59:49,763 INFO L226 Difference]: Without dead ends: 120 [2020-09-24 14:59:49,764 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=93, Invalid=413, Unknown=0, NotChecked=0, Total=506 [2020-09-24 14:59:49,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-09-24 14:59:49,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 113. [2020-09-24 14:59:49,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-09-24 14:59:49,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 121 transitions. [2020-09-24 14:59:49,774 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 121 transitions. Word has length 76 [2020-09-24 14:59:49,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:59:49,774 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 121 transitions. [2020-09-24 14:59:49,774 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 14:59:49,774 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 121 transitions. [2020-09-24 14:59:49,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-09-24 14:59:49,775 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:59:49,776 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:59:49,776 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-24 14:59:49,776 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:59:49,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:59:49,777 INFO L82 PathProgramCache]: Analyzing trace with hash -446623556, now seen corresponding path program 2 times [2020-09-24 14:59:49,777 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:59:49,777 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [932053150] [2020-09-24 14:59:49,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:59:49,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:59:49,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:59:49,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:59:49,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-24 14:59:49,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:59:49,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-24 14:59:49,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:59:49,965 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-24 14:59:49,966 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [932053150] [2020-09-24 14:59:49,966 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 14:59:49,966 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-24 14:59:49,966 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97738721] [2020-09-24 14:59:49,967 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 14:59:49,967 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:59:49,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 14:59:49,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-09-24 14:59:49,968 INFO L87 Difference]: Start difference. First operand 113 states and 121 transitions. Second operand 13 states. [2020-09-24 14:59:50,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:59:50,577 INFO L93 Difference]: Finished difference Result 163 states and 171 transitions. [2020-09-24 14:59:50,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-24 14:59:50,578 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 77 [2020-09-24 14:59:50,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:59:50,579 INFO L225 Difference]: With dead ends: 163 [2020-09-24 14:59:50,579 INFO L226 Difference]: Without dead ends: 122 [2020-09-24 14:59:50,580 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=105, Invalid=447, Unknown=0, NotChecked=0, Total=552 [2020-09-24 14:59:50,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-09-24 14:59:50,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 110. [2020-09-24 14:59:50,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-09-24 14:59:50,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 117 transitions. [2020-09-24 14:59:50,590 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 117 transitions. Word has length 77 [2020-09-24 14:59:50,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:59:50,591 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 117 transitions. [2020-09-24 14:59:50,591 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 14:59:50,591 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 117 transitions. [2020-09-24 14:59:50,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-09-24 14:59:50,592 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:59:50,592 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:59:50,592 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-24 14:59:50,593 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:59:50,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:59:50,593 INFO L82 PathProgramCache]: Analyzing trace with hash -1305863211, now seen corresponding path program 5 times [2020-09-24 14:59:50,593 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:59:50,594 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [587473883] [2020-09-24 14:59:50,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:59:50,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 14:59:50,629 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 14:59:50,629 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 14:59:50,634 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-24 14:59:50,661 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 02:59:50 BoogieIcfgContainer [2020-09-24 14:59:50,661 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 14:59:50,668 INFO L168 Benchmark]: Toolchain (without parser) took 10871.28 ms. Allocated memory was 146.3 MB in the beginning and 310.9 MB in the end (delta: 164.6 MB). Free memory was 100.6 MB in the beginning and 103.4 MB in the end (delta: -2.8 MB). Peak memory consumption was 161.8 MB. Max. memory is 7.1 GB. [2020-09-24 14:59:50,669 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 146.3 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 14:59:50,670 INFO L168 Benchmark]: CACSL2BoogieTranslator took 724.00 ms. Allocated memory was 146.3 MB in the beginning and 203.4 MB in the end (delta: 57.1 MB). Free memory was 100.1 MB in the beginning and 169.3 MB in the end (delta: -69.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB. [2020-09-24 14:59:50,672 INFO L168 Benchmark]: Boogie Preprocessor took 68.81 ms. Allocated memory is still 203.4 MB. Free memory was 169.3 MB in the beginning and 166.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-09-24 14:59:50,672 INFO L168 Benchmark]: RCFGBuilder took 769.30 ms. Allocated memory is still 203.4 MB. Free memory was 166.6 MB in the beginning and 121.1 MB in the end (delta: 45.5 MB). Peak memory consumption was 45.5 MB. Max. memory is 7.1 GB. [2020-09-24 14:59:50,681 INFO L168 Benchmark]: TraceAbstraction took 9299.49 ms. Allocated memory was 203.4 MB in the beginning and 310.9 MB in the end (delta: 107.5 MB). Free memory was 120.4 MB in the beginning and 103.4 MB in the end (delta: 17.0 MB). Peak memory consumption was 124.5 MB. Max. memory is 7.1 GB. [2020-09-24 14:59:50,688 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 146.3 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 724.00 ms. Allocated memory was 146.3 MB in the beginning and 203.4 MB in the end (delta: 57.1 MB). Free memory was 100.1 MB in the beginning and 169.3 MB in the end (delta: -69.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 68.81 ms. Allocated memory is still 203.4 MB. Free memory was 169.3 MB in the beginning and 166.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 769.30 ms. Allocated memory is still 203.4 MB. Free memory was 166.6 MB in the beginning and 121.1 MB in the end (delta: 45.5 MB). Peak memory consumption was 45.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 9299.49 ms. Allocated memory was 203.4 MB in the beginning and 310.9 MB in the end (delta: 107.5 MB). Free memory was 120.4 MB in the beginning and 103.4 MB in the end (delta: 17.0 MB). Peak memory consumption was 124.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 602]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L592] int len = 2; [L593] len < 32 && __VERIFIER_nondet_int() [L593] len < 32 && __VERIFIER_nondet_int() [L593] COND FALSE !(len < 32 && __VERIFIER_nondet_int()) [L596] CALL, EXPR sll_create(len + 1) [L564] SLL head = ((void *)0); [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 [L572] 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 [L572] 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 [L572] len-- [L565] COND FALSE !(len > 0) [L574] return head; [L596] RET, EXPR sll_create(len + 1) [L596] SLL s = sll_create(len + 1); [L597] CALL, EXPR sll_length(s) [L577] int len = 0; [L578] COND TRUE \read(head) [L579] len++ [L580] EXPR head->next [L580] head = head->next [L578] COND TRUE \read(head) [L579] len++ [L580] EXPR head->next [L580] head = head->next [L578] COND TRUE \read(head) [L579] len++ [L580] EXPR head->next [L580] head = head->next [L578] COND FALSE !(\read(head)) [L582] return len; [L597] RET, EXPR sll_length(s) [L597] COND TRUE len != sll_length(s) [L602] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 86 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 9.1s, OverallIterations: 13, TraceHistogramMax: 3, AutomataDifference: 6.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 711 SDtfs, 1507 SDslu, 1666 SDs, 0 SdLazy, 3660 SolverSat, 228 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 266 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 353 ImplicationChecksByTransitivity, 2.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=113occurred 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: 0.1s AutomataMinimizationTime, 12 MinimizatonAttempts, 220 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 706 NumberOfCodeBlocks, 706 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 611 ConstructedInterpolants, 0 QuantifiedInterpolants, 101481 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 5 PerfectInterpolantSequences, 81/125 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...