/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/heap-manipulation/dll_of_dll-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 10:20:42,126 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 10:20:42,129 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 10:20:42,156 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 10:20:42,156 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 10:20:42,157 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 10:20:42,159 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 10:20:42,161 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 10:20:42,163 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 10:20:42,164 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 10:20:42,165 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 10:20:42,166 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 10:20:42,166 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 10:20:42,171 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 10:20:42,172 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 10:20:42,173 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 10:20:42,178 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 10:20:42,179 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 10:20:42,180 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 10:20:42,182 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 10:20:42,184 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 10:20:42,185 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 10:20:42,186 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 10:20:42,187 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 10:20:42,190 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 10:20:42,190 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 10:20:42,190 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 10:20:42,191 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 10:20:42,192 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 10:20:42,193 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 10:20:42,193 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 10:20:42,194 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 10:20:42,195 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 10:20:42,196 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 10:20:42,197 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 10:20:42,197 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 10:20:42,198 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 10:20:42,198 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 10:20:42,198 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 10:20:42,199 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 10:20:42,200 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 10:20:42,201 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 [2020-09-21 10:20:42,227 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 10:20:42,227 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 10:20:42,228 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 10:20:42,229 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 10:20:42,229 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 10:20:42,229 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 10:20:42,229 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 10:20:42,230 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 10:20:42,230 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 10:20:42,230 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 10:20:42,230 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 10:20:42,230 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 10:20:42,231 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 10:20:42,231 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 10:20:42,231 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 10:20:42,231 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 10:20:42,231 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 10:20:42,232 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 10:20:42,232 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 10:20:42,232 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 10:20:42,232 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 10:20:42,232 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 10:20:42,233 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 10:20:42,233 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 10:20:42,233 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 10:20:42,233 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 10:20:42,233 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 10:20:42,234 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 10:20:42,234 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 10:20:42,234 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> false [2020-09-21 10:20:42,681 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 10:20:42,698 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 10:20:42,705 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 10:20:42,707 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 10:20:42,707 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 10:20:42,710 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-manipulation/dll_of_dll-1.i [2020-09-21 10:20:42,783 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6d6257908/36c1e13077ce4cff905749c54f31c4cc/FLAGe066d5481 [2020-09-21 10:20:43,390 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 10:20:43,391 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/heap-manipulation/dll_of_dll-1.i [2020-09-21 10:20:43,410 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6d6257908/36c1e13077ce4cff905749c54f31c4cc/FLAGe066d5481 [2020-09-21 10:20:43,656 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6d6257908/36c1e13077ce4cff905749c54f31c4cc [2020-09-21 10:20:43,669 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 10:20:43,675 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 10:20:43,677 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 10:20:43,677 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 10:20:43,681 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 10:20:43,683 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 10:20:43" (1/1) ... [2020-09-21 10:20:43,687 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ef53ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:20:43, skipping insertion in model container [2020-09-21 10:20:43,687 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 10:20:43" (1/1) ... [2020-09-21 10:20:43,697 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 10:20:43,747 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 10:20:44,271 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 10:20:44,288 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 10:20:44,356 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 10:20:44,429 INFO L208 MainTranslator]: Completed translation [2020-09-21 10:20:44,430 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:20:44 WrapperNode [2020-09-21 10:20:44,430 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 10:20:44,431 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 10:20:44,431 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 10:20:44,431 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 10:20:44,449 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:20:44" (1/1) ... [2020-09-21 10:20:44,450 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:20:44" (1/1) ... [2020-09-21 10:20:44,473 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:20:44" (1/1) ... [2020-09-21 10:20:44,473 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:20:44" (1/1) ... [2020-09-21 10:20:44,502 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:20:44" (1/1) ... [2020-09-21 10:20:44,520 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:20:44" (1/1) ... [2020-09-21 10:20:44,525 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:20:44" (1/1) ... [2020-09-21 10:20:44,535 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 10:20:44,536 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 10:20:44,536 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 10:20:44,536 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 10:20:44,537 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:20:44" (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 [2020-09-21 10:20:44,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 10:20:44,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 10:20:44,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2020-09-21 10:20:44,616 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-09-21 10:20:44,616 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-09-21 10:20:44,616 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2020-09-21 10:20:44,617 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_or_die_slave [2020-09-21 10:20:44,618 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_or_die_master [2020-09-21 10:20:44,618 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_slave [2020-09-21 10:20:44,618 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_generic [2020-09-21 10:20:44,619 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_slave [2020-09-21 10:20:44,619 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_slave [2020-09-21 10:20:44,620 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_nested_lists [2020-09-21 10:20:44,620 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_reinit_nested_lists [2020-09-21 10:20:44,620 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_master [2020-09-21 10:20:44,621 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_master [2020-09-21 10:20:44,621 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_master [2020-09-21 10:20:44,622 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_base [2020-09-21 10:20:44,622 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_full [2020-09-21 10:20:44,622 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_dangling [2020-09-21 10:20:44,623 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_init [2020-09-21 10:20:44,623 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 10:20:44,623 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 10:20:44,624 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-21 10:20:44,624 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-21 10:20:44,626 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-21 10:20:44,626 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-21 10:20:44,626 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-21 10:20:44,626 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-21 10:20:44,626 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-21 10:20:44,627 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-21 10:20:44,627 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-21 10:20:44,627 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-21 10:20:44,627 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-21 10:20:44,628 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-21 10:20:44,628 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-21 10:20:44,628 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-21 10:20:44,628 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-21 10:20:44,628 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-21 10:20:44,628 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-09-21 10:20:44,628 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-09-21 10:20:44,629 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-21 10:20:44,629 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-21 10:20:44,629 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-21 10:20:44,629 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-21 10:20:44,629 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-21 10:20:44,629 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-21 10:20:44,630 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-21 10:20:44,630 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-21 10:20:44,630 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-21 10:20:44,630 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-21 10:20:44,630 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-21 10:20:44,631 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-21 10:20:44,631 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-21 10:20:44,631 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-21 10:20:44,631 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-21 10:20:44,631 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-21 10:20:44,631 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-21 10:20:44,632 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-21 10:20:44,632 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-21 10:20:44,632 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-21 10:20:44,633 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-21 10:20:44,633 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-21 10:20:44,633 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-21 10:20:44,633 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-21 10:20:44,633 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-21 10:20:44,633 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-21 10:20:44,634 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-21 10:20:44,634 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-21 10:20:44,635 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-21 10:20:44,635 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-21 10:20:44,635 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-21 10:20:44,636 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-21 10:20:44,636 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-21 10:20:44,636 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-21 10:20:44,636 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-21 10:20:44,637 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-21 10:20:44,637 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-21 10:20:44,637 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-21 10:20:44,637 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-21 10:20:44,638 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-21 10:20:44,638 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-21 10:20:44,639 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-21 10:20:44,639 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-21 10:20:44,639 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-21 10:20:44,639 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-21 10:20:44,639 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-21 10:20:44,640 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-21 10:20:44,640 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-21 10:20:44,640 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-21 10:20:44,640 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-21 10:20:44,641 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-21 10:20:44,641 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-21 10:20:44,641 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-21 10:20:44,641 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-21 10:20:44,641 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-21 10:20:44,641 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-21 10:20:44,641 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-21 10:20:44,641 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-21 10:20:44,642 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-21 10:20:44,642 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-21 10:20:44,642 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-21 10:20:44,642 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-21 10:20:44,642 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-21 10:20:44,642 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-21 10:20:44,642 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-21 10:20:44,642 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-21 10:20:44,642 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-21 10:20:44,642 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-21 10:20:44,643 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-21 10:20:44,643 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-21 10:20:44,643 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-21 10:20:44,643 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-21 10:20:44,643 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-21 10:20:44,643 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-21 10:20:44,643 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-21 10:20:44,643 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-21 10:20:44,643 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-21 10:20:44,644 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-21 10:20:44,644 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-21 10:20:44,644 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-21 10:20:44,644 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-21 10:20:44,644 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-21 10:20:44,644 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-21 10:20:44,645 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-21 10:20:44,645 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-21 10:20:44,645 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-21 10:20:44,645 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-21 10:20:44,645 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 10:20:44,645 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2020-09-21 10:20:44,646 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_or_die_slave [2020-09-21 10:20:44,646 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-21 10:20:44,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-21 10:20:44,648 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_or_die_master [2020-09-21 10:20:44,651 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_slave [2020-09-21 10:20:44,651 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-21 10:20:44,651 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_generic [2020-09-21 10:20:44,652 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 10:20:44,652 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2020-09-21 10:20:44,652 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-09-21 10:20:44,653 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 10:20:44,653 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_slave [2020-09-21 10:20:44,653 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_slave [2020-09-21 10:20:44,660 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_nested_lists [2020-09-21 10:20:44,660 INFO L130 BoogieDeclarations]: Found specification of procedure dll_reinit_nested_lists [2020-09-21 10:20:44,660 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_master [2020-09-21 10:20:44,661 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_master [2020-09-21 10:20:44,662 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_master [2020-09-21 10:20:44,662 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_base [2020-09-21 10:20:44,662 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_full [2020-09-21 10:20:44,662 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_dangling [2020-09-21 10:20:44,662 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_init [2020-09-21 10:20:44,662 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 10:20:44,662 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 10:20:44,663 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 10:20:45,648 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 10:20:45,649 INFO L295 CfgBuilder]: Removed 38 assume(true) statements. [2020-09-21 10:20:45,661 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 10:20:45 BoogieIcfgContainer [2020-09-21 10:20:45,661 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 10:20:45,663 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 10:20:45,663 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 10:20:45,667 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 10:20:45,668 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 10:20:43" (1/3) ... [2020-09-21 10:20:45,669 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@568eb6b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 10:20:45, skipping insertion in model container [2020-09-21 10:20:45,669 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:20:44" (2/3) ... [2020-09-21 10:20:45,670 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@568eb6b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 10:20:45, skipping insertion in model container [2020-09-21 10:20:45,670 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 10:20:45" (3/3) ... [2020-09-21 10:20:45,673 INFO L109 eAbstractionObserver]: Analyzing ICFG dll_of_dll-1.i [2020-09-21 10:20:45,685 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 10:20:45,699 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 10:20:45,722 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 10:20:45,758 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 10:20:45,758 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 10:20:45,758 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 10:20:45,758 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 10:20:45,758 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 10:20:45,759 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 10:20:45,759 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 10:20:45,759 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 10:20:45,783 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states. [2020-09-21 10:20:45,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-09-21 10:20:45,793 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:20:45,795 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-21 10:20:45,796 INFO L427 AbstractCegarLoop]: === Iteration 1 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:20:45,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:20:45,804 INFO L82 PathProgramCache]: Analyzing trace with hash -1405399524, now seen corresponding path program 1 times [2020-09-21 10:20:45,815 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:20:45,816 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1186063246] [2020-09-21 10:20:45,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:20:45,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:20:46,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:20:46,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:20:46,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 10:20:46,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:20:46,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:20:46,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:20:46,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:20:46,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:20:46,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:20:46,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:20:46,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:20:46,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:20:46,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-21 10:20:46,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:20:46,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:20:46,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:20:46,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:20:46,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:20:46,399 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-09-21 10:20:46,400 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1186063246] [2020-09-21 10:20:46,403 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:20:46,403 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 10:20:46,404 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583114827] [2020-09-21 10:20:46,411 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 10:20:46,413 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:20:46,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 10:20:46,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 10:20:46,438 INFO L87 Difference]: Start difference. First operand 169 states. Second operand 4 states. [2020-09-21 10:20:46,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:20:46,960 INFO L93 Difference]: Finished difference Result 343 states and 542 transitions. [2020-09-21 10:20:46,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 10:20:46,962 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-09-21 10:20:46,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:20:46,980 INFO L225 Difference]: With dead ends: 343 [2020-09-21 10:20:46,980 INFO L226 Difference]: Without dead ends: 166 [2020-09-21 10:20:46,988 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 10:20:47,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-09-21 10:20:47,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 155. [2020-09-21 10:20:47,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-09-21 10:20:47,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 184 transitions. [2020-09-21 10:20:47,078 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 184 transitions. Word has length 59 [2020-09-21 10:20:47,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:20:47,079 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 184 transitions. [2020-09-21 10:20:47,079 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 10:20:47,079 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 184 transitions. [2020-09-21 10:20:47,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-09-21 10:20:47,086 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:20:47,086 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-21 10:20:47,087 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 10:20:47,087 INFO L427 AbstractCegarLoop]: === Iteration 2 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:20:47,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:20:47,087 INFO L82 PathProgramCache]: Analyzing trace with hash 747676979, now seen corresponding path program 1 times [2020-09-21 10:20:47,088 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:20:47,089 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [501176249] [2020-09-21 10:20:47,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:20:47,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:20:47,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:20:47,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:20:47,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 10:20:47,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:20:47,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:20:47,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:20:47,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:20:47,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:20:47,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:20:47,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:20:47,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:20:47,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:20:47,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-21 10:20:47,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:20:47,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:20:47,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:20:47,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:20:47,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:20:47,755 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-09-21 10:20:47,756 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [501176249] [2020-09-21 10:20:47,756 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 10:20:47,756 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-21 10:20:47,756 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988466997] [2020-09-21 10:20:47,760 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-21 10:20:47,761 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:20:47,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-21 10:20:47,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-09-21 10:20:47,766 INFO L87 Difference]: Start difference. First operand 155 states and 184 transitions. Second operand 13 states. [2020-09-21 10:20:49,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:20:49,129 INFO L93 Difference]: Finished difference Result 327 states and 406 transitions. [2020-09-21 10:20:49,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-21 10:20:49,130 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 60 [2020-09-21 10:20:49,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:20:49,134 INFO L225 Difference]: With dead ends: 327 [2020-09-21 10:20:49,134 INFO L226 Difference]: Without dead ends: 179 [2020-09-21 10:20:49,136 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2020-09-21 10:20:49,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-09-21 10:20:49,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 168. [2020-09-21 10:20:49,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-09-21 10:20:49,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 199 transitions. [2020-09-21 10:20:49,163 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 199 transitions. Word has length 60 [2020-09-21 10:20:49,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:20:49,163 INFO L479 AbstractCegarLoop]: Abstraction has 168 states and 199 transitions. [2020-09-21 10:20:49,164 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-21 10:20:49,164 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 199 transitions. [2020-09-21 10:20:49,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-09-21 10:20:49,167 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:20:49,167 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-21 10:20:49,168 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 10:20:49,168 INFO L427 AbstractCegarLoop]: === Iteration 3 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:20:49,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:20:49,169 INFO L82 PathProgramCache]: Analyzing trace with hash 586330229, now seen corresponding path program 1 times [2020-09-21 10:20:49,169 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:20:49,169 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1504003993] [2020-09-21 10:20:49,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:20:49,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:20:49,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:20:49,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:20:49,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 10:20:49,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:20:49,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:20:49,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:20:49,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:20:49,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:20:49,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:20:49,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:20:49,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:20:49,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:20:49,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:20:49,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:20:50,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:20:50,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:20:50,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:20:50,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:20:50,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:20:50,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:20:50,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:20:50,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:20:50,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-21 10:20:50,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:20:50,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:20:50,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:20:50,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:20:50,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:20:51,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-21 10:20:51,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:20:51,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:20:51,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:20:51,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:20:51,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:20:51,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:20:51,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:20:51,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:20:51,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:20:51,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:20:51,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:20:51,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:20:51,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:20:51,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:20:51,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:20:51,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-21 10:20:51,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:20:51,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:20:51,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:20:51,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:20:51,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:20:51,436 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 16 proven. 93 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-09-21 10:20:51,437 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1504003993] [2020-09-21 10:20:51,437 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 10:20:51,437 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-09-21 10:20:51,438 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919925924] [2020-09-21 10:20:51,438 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-09-21 10:20:51,439 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:20:51,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-09-21 10:20:51,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=693, Unknown=0, NotChecked=0, Total=756 [2020-09-21 10:20:51,440 INFO L87 Difference]: Start difference. First operand 168 states and 199 transitions. Second operand 28 states. [2020-09-21 10:20:54,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:20:54,980 INFO L93 Difference]: Finished difference Result 348 states and 425 transitions. [2020-09-21 10:20:54,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-21 10:20:54,981 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 154 [2020-09-21 10:20:54,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:20:54,985 INFO L225 Difference]: With dead ends: 348 [2020-09-21 10:20:54,985 INFO L226 Difference]: Without dead ends: 189 [2020-09-21 10:20:54,987 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=182, Invalid=1798, Unknown=0, NotChecked=0, Total=1980 [2020-09-21 10:20:54,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2020-09-21 10:20:55,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 176. [2020-09-21 10:20:55,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-09-21 10:20:55,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 208 transitions. [2020-09-21 10:20:55,009 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 208 transitions. Word has length 154 [2020-09-21 10:20:55,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:20:55,010 INFO L479 AbstractCegarLoop]: Abstraction has 176 states and 208 transitions. [2020-09-21 10:20:55,010 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-09-21 10:20:55,010 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 208 transitions. [2020-09-21 10:20:55,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-09-21 10:20:55,012 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:20:55,013 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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] [2020-09-21 10:20:55,013 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 10:20:55,013 INFO L427 AbstractCegarLoop]: === Iteration 4 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:20:55,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:20:55,013 INFO L82 PathProgramCache]: Analyzing trace with hash -467161035, now seen corresponding path program 1 times [2020-09-21 10:20:55,014 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:20:55,014 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1857660442] [2020-09-21 10:20:55,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:20:55,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:20:55,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:20:55,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:20:55,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 10:20:55,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:20:55,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:20:55,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:20:55,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:20:55,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:20:55,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:20:55,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:20:55,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:20:55,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:20:56,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:20:56,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:20:56,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:20:56,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:20:56,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:20:56,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:20:56,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:20:56,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:20:56,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:20:56,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:20:56,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-21 10:20:56,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:20:56,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:20:56,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:20:56,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:20:56,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:20:56,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-21 10:20:56,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:20:56,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:20:56,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:20:56,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:20:56,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:20:56,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:20:56,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:20:56,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:20:56,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:20:56,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:20:56,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:20:56,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:20:56,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:20:56,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:20:56,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:20:56,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-21 10:20:56,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:20:56,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:20:56,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:20:56,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:20:56,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:20:56,505 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 15 proven. 26 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2020-09-21 10:20:56,506 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1857660442] [2020-09-21 10:20:56,506 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 10:20:56,506 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-21 10:20:56,508 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902764379] [2020-09-21 10:20:56,508 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-21 10:20:56,509 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:20:56,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-21 10:20:56,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2020-09-21 10:20:56,510 INFO L87 Difference]: Start difference. First operand 176 states and 208 transitions. Second operand 19 states. [2020-09-21 10:20:59,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:20:59,007 INFO L93 Difference]: Finished difference Result 360 states and 431 transitions. [2020-09-21 10:20:59,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-21 10:20:59,008 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 154 [2020-09-21 10:20:59,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:20:59,012 INFO L225 Difference]: With dead ends: 360 [2020-09-21 10:20:59,012 INFO L226 Difference]: Without dead ends: 193 [2020-09-21 10:20:59,013 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=72, Invalid=528, Unknown=0, NotChecked=0, Total=600 [2020-09-21 10:20:59,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-09-21 10:20:59,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 182. [2020-09-21 10:20:59,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-09-21 10:20:59,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 216 transitions. [2020-09-21 10:20:59,036 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 216 transitions. Word has length 154 [2020-09-21 10:20:59,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:20:59,037 INFO L479 AbstractCegarLoop]: Abstraction has 182 states and 216 transitions. [2020-09-21 10:20:59,037 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-21 10:20:59,037 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 216 transitions. [2020-09-21 10:20:59,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-09-21 10:20:59,040 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:20:59,040 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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] [2020-09-21 10:20:59,040 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 10:20:59,040 INFO L427 AbstractCegarLoop]: === Iteration 5 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:20:59,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:20:59,041 INFO L82 PathProgramCache]: Analyzing trace with hash 1717739637, now seen corresponding path program 1 times [2020-09-21 10:20:59,041 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:20:59,041 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1947148162] [2020-09-21 10:20:59,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:20:59,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:20:59,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:20:59,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:20:59,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 10:20:59,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:20:59,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:20:59,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:20:59,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:20:59,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:20:59,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:20:59,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:20:59,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:20:59,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:00,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:21:00,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:00,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:21:00,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:00,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:21:00,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:00,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:21:00,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:00,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:21:00,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:00,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-21 10:21:00,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:00,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:21:00,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:00,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:21:00,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:00,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-21 10:21:00,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:00,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:21:00,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:00,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:21:00,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:00,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:21:00,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:00,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:21:00,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:00,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:21:00,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:00,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:21:00,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:00,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:21:00,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:00,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-21 10:21:00,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:00,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:21:00,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:00,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:21:00,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:01,140 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 28 proven. 25 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2020-09-21 10:21:01,141 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1947148162] [2020-09-21 10:21:01,141 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 10:21:01,141 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-09-21 10:21:01,141 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645480401] [2020-09-21 10:21:01,142 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-09-21 10:21:01,143 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:21:01,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-09-21 10:21:01,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=693, Unknown=0, NotChecked=0, Total=756 [2020-09-21 10:21:01,144 INFO L87 Difference]: Start difference. First operand 182 states and 216 transitions. Second operand 28 states. [2020-09-21 10:21:04,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:21:04,354 INFO L93 Difference]: Finished difference Result 371 states and 447 transitions. [2020-09-21 10:21:04,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-21 10:21:04,355 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 154 [2020-09-21 10:21:04,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:21:04,361 INFO L225 Difference]: With dead ends: 371 [2020-09-21 10:21:04,361 INFO L226 Difference]: Without dead ends: 198 [2020-09-21 10:21:04,367 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=182, Invalid=1798, Unknown=0, NotChecked=0, Total=1980 [2020-09-21 10:21:04,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-09-21 10:21:04,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 185. [2020-09-21 10:21:04,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2020-09-21 10:21:04,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 217 transitions. [2020-09-21 10:21:04,409 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 217 transitions. Word has length 154 [2020-09-21 10:21:04,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:21:04,413 INFO L479 AbstractCegarLoop]: Abstraction has 185 states and 217 transitions. [2020-09-21 10:21:04,413 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-09-21 10:21:04,413 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 217 transitions. [2020-09-21 10:21:04,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-09-21 10:21:04,418 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:21:04,418 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 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] [2020-09-21 10:21:04,418 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 10:21:04,418 INFO L427 AbstractCegarLoop]: === Iteration 6 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:21:04,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:21:04,419 INFO L82 PathProgramCache]: Analyzing trace with hash -2084601485, now seen corresponding path program 1 times [2020-09-21 10:21:04,419 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:21:04,419 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2032734154] [2020-09-21 10:21:04,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:21:04,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:04,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:21:04,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:04,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 10:21:04,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:05,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:21:05,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:05,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:21:05,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:05,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:21:05,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:05,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:21:05,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:05,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:21:05,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:05,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:21:05,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:05,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:21:05,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:05,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:21:05,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:05,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:21:05,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:05,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-21 10:21:05,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:05,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:21:05,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:05,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:21:05,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:05,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-21 10:21:05,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:05,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:21:05,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:05,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:21:05,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:06,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:21:06,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:06,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:21:06,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:06,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:21:06,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:06,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:21:06,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:06,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:21:06,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:06,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-21 10:21:06,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:06,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:21:06,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:06,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:21:06,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:06,290 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 35 proven. 2 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2020-09-21 10:21:06,291 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2032734154] [2020-09-21 10:21:06,291 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 10:21:06,291 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-09-21 10:21:06,292 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994080224] [2020-09-21 10:21:06,292 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-09-21 10:21:06,292 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:21:06,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-09-21 10:21:06,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=419, Unknown=0, NotChecked=0, Total=462 [2020-09-21 10:21:06,293 INFO L87 Difference]: Start difference. First operand 185 states and 217 transitions. Second operand 22 states. [2020-09-21 10:21:08,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:21:08,880 INFO L93 Difference]: Finished difference Result 323 states and 388 transitions. [2020-09-21 10:21:08,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-21 10:21:08,881 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 154 [2020-09-21 10:21:08,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:21:08,889 INFO L225 Difference]: With dead ends: 323 [2020-09-21 10:21:08,890 INFO L226 Difference]: Without dead ends: 254 [2020-09-21 10:21:08,892 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=131, Invalid=1129, Unknown=0, NotChecked=0, Total=1260 [2020-09-21 10:21:08,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-09-21 10:21:08,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 209. [2020-09-21 10:21:08,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2020-09-21 10:21:08,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 246 transitions. [2020-09-21 10:21:08,928 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 246 transitions. Word has length 154 [2020-09-21 10:21:08,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:21:08,929 INFO L479 AbstractCegarLoop]: Abstraction has 209 states and 246 transitions. [2020-09-21 10:21:08,929 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-09-21 10:21:08,929 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 246 transitions. [2020-09-21 10:21:08,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-09-21 10:21:08,937 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:21:08,937 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 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] [2020-09-21 10:21:08,938 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 10:21:08,938 INFO L427 AbstractCegarLoop]: === Iteration 7 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:21:08,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:21:08,939 INFO L82 PathProgramCache]: Analyzing trace with hash -1709746076, now seen corresponding path program 1 times [2020-09-21 10:21:08,939 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:21:08,939 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1223588966] [2020-09-21 10:21:08,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:21:09,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:09,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:21:09,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:09,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 10:21:09,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:09,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:21:09,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:10,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:21:10,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:10,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:21:10,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:10,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:21:10,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:10,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:21:10,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:10,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:21:11,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:11,705 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 24 [2020-09-21 10:21:12,559 WARN L193 SmtUtils]: Spent 397.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 20 [2020-09-21 10:21:12,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:21:12,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:13,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:21:13,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:13,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:21:13,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:13,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-21 10:21:13,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:13,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:21:13,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:13,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:21:13,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:13,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-21 10:21:14,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:14,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:21:14,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:14,695 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 42 [2020-09-21 10:21:15,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:21:15,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:15,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:21:15,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:16,133 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2020-09-21 10:21:16,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:21:16,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat