/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/forester-heap/dll-sorted-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 07:50:02,051 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 07:50:02,055 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 07:50:02,093 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 07:50:02,093 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 07:50:02,101 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 07:50:02,104 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 07:50:02,107 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 07:50:02,110 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 07:50:02,113 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 07:50:02,115 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 07:50:02,116 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 07:50:02,116 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 07:50:02,119 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 07:50:02,121 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 07:50:02,124 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 07:50:02,125 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 07:50:02,126 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 07:50:02,128 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 07:50:02,136 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 07:50:02,138 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 07:50:02,139 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 07:50:02,140 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 07:50:02,141 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 07:50:02,159 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 07:50:02,159 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 07:50:02,160 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 07:50:02,161 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 07:50:02,161 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 07:50:02,162 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 07:50:02,162 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 07:50:02,163 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 07:50:02,168 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 07:50:02,169 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 07:50:02,170 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 07:50:02,170 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 07:50:02,171 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 07:50:02,172 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 07:50:02,172 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 07:50:02,173 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 07:50:02,174 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 07:50:02,176 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 [2020-09-25 07:50:02,218 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 07:50:02,219 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 07:50:02,220 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 07:50:02,220 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 07:50:02,221 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 07:50:02,221 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 07:50:02,221 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 07:50:02,222 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 07:50:02,222 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 07:50:02,222 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 07:50:02,223 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 07:50:02,223 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 07:50:02,223 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 07:50:02,224 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 07:50:02,224 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 07:50:02,224 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 07:50:02,224 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 07:50:02,225 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 07:50:02,225 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 07:50:02,225 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 07:50:02,225 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 07:50:02,225 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:50:02,226 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 07:50:02,226 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 07:50:02,226 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 07:50:02,226 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 07:50:02,226 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 07:50:02,227 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 07:50:02,227 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 07:50:02,227 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; [2020-09-25 07:50:02,709 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 07:50:02,727 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 07:50:02,734 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 07:50:02,736 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 07:50:02,738 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 07:50:02,739 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-sorted-1.i [2020-09-25 07:50:02,830 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3d8f3e8c0/b2d81128209b432cb2dff2b5a438df8f/FLAG118dacd60 [2020-09-25 07:50:03,396 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 07:50:03,397 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/dll-sorted-1.i [2020-09-25 07:50:03,411 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3d8f3e8c0/b2d81128209b432cb2dff2b5a438df8f/FLAG118dacd60 [2020-09-25 07:50:03,672 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3d8f3e8c0/b2d81128209b432cb2dff2b5a438df8f [2020-09-25 07:50:03,687 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 07:50:03,693 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 07:50:03,694 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 07:50:03,694 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 07:50:03,699 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 07:50:03,700 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:50:03" (1/1) ... [2020-09-25 07:50:03,704 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7636aefb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:50:03, skipping insertion in model container [2020-09-25 07:50:03,704 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:50:03" (1/1) ... [2020-09-25 07:50:03,713 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 07:50:03,761 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 07:50:04,254 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:50:04,275 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 07:50:04,327 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:50:04,394 INFO L208 MainTranslator]: Completed translation [2020-09-25 07:50:04,395 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:50:04 WrapperNode [2020-09-25 07:50:04,395 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 07:50:04,396 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 07:50:04,396 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 07:50:04,396 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 07:50:04,414 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:50:04" (1/1) ... [2020-09-25 07:50:04,414 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:50:04" (1/1) ... [2020-09-25 07:50:04,433 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:50:04" (1/1) ... [2020-09-25 07:50:04,433 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:50:04" (1/1) ... [2020-09-25 07:50:04,457 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:50:04" (1/1) ... [2020-09-25 07:50:04,475 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:50:04" (1/1) ... [2020-09-25 07:50:04,479 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:50:04" (1/1) ... [2020-09-25 07:50:04,486 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 07:50:04,487 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 07:50:04,487 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 07:50:04,487 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 07:50:04,489 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:50:04" (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 [2020-09-25 07:50:04,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 07:50:04,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 07:50:04,566 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 07:50:04,566 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-25 07:50:04,566 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-25 07:50:04,567 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-25 07:50:04,567 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-25 07:50:04,567 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-25 07:50:04,567 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-25 07:50:04,567 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-25 07:50:04,568 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-25 07:50:04,568 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-25 07:50:04,568 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-25 07:50:04,568 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-25 07:50:04,568 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-25 07:50:04,569 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-25 07:50:04,569 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-25 07:50:04,569 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-25 07:50:04,569 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-25 07:50:04,569 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-25 07:50:04,570 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-25 07:50:04,570 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-25 07:50:04,570 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-25 07:50:04,570 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-25 07:50:04,570 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-25 07:50:04,571 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-25 07:50:04,571 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-25 07:50:04,571 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-25 07:50:04,571 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-25 07:50:04,571 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-25 07:50:04,572 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-25 07:50:04,572 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-25 07:50:04,572 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-25 07:50:04,572 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-25 07:50:04,572 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-25 07:50:04,572 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-25 07:50:04,573 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-25 07:50:04,573 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-25 07:50:04,573 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-25 07:50:04,573 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-25 07:50:04,573 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-25 07:50:04,573 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-25 07:50:04,574 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-25 07:50:04,574 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-25 07:50:04,574 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-25 07:50:04,574 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-25 07:50:04,574 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-25 07:50:04,574 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-25 07:50:04,574 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-25 07:50:04,575 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-25 07:50:04,575 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-25 07:50:04,575 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-25 07:50:04,575 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-25 07:50:04,575 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 07:50:04,575 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 07:50:04,576 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-25 07:50:04,576 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 07:50:04,576 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-25 07:50:04,576 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-25 07:50:04,576 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-25 07:50:04,576 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-25 07:50:04,576 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-25 07:50:04,577 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 07:50:04,577 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-25 07:50:04,577 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-25 07:50:04,577 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-25 07:50:04,577 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 07:50:04,577 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-25 07:50:04,578 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-25 07:50:04,578 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-25 07:50:04,578 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-25 07:50:04,578 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-25 07:50:04,578 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-25 07:50:04,578 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-25 07:50:04,579 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-25 07:50:04,579 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-25 07:50:04,579 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-25 07:50:04,579 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-25 07:50:04,579 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-25 07:50:04,579 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-25 07:50:04,580 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-25 07:50:04,580 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-25 07:50:04,580 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-25 07:50:04,580 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-25 07:50:04,580 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-25 07:50:04,580 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-25 07:50:04,581 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-25 07:50:04,581 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-25 07:50:04,581 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-25 07:50:04,581 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-25 07:50:04,581 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-25 07:50:04,581 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-25 07:50:04,581 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-25 07:50:04,582 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-25 07:50:04,582 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-25 07:50:04,582 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-25 07:50:04,582 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-25 07:50:04,582 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-25 07:50:04,582 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-25 07:50:04,582 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-25 07:50:04,583 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-25 07:50:04,583 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-25 07:50:04,583 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-25 07:50:04,583 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-25 07:50:04,583 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-25 07:50:04,583 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-25 07:50:04,583 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 07:50:04,584 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 07:50:04,584 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 07:50:04,584 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 07:50:04,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 07:50:04,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 07:50:04,584 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 07:50:04,584 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 07:50:04,585 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 07:50:04,585 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 07:50:04,585 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 07:50:05,325 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 07:50:05,325 INFO L295 CfgBuilder]: Removed 18 assume(true) statements. [2020-09-25 07:50:05,331 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:50:05 BoogieIcfgContainer [2020-09-25 07:50:05,331 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 07:50:05,333 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 07:50:05,333 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 07:50:05,337 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 07:50:05,337 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 07:50:03" (1/3) ... [2020-09-25 07:50:05,338 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cff6215 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:50:05, skipping insertion in model container [2020-09-25 07:50:05,338 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:50:04" (2/3) ... [2020-09-25 07:50:05,339 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cff6215 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:50:05, skipping insertion in model container [2020-09-25 07:50:05,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:50:05" (3/3) ... [2020-09-25 07:50:05,341 INFO L109 eAbstractionObserver]: Analyzing ICFG dll-sorted-1.i [2020-09-25 07:50:05,353 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 07:50:05,364 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-09-25 07:50:05,385 INFO L251 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-09-25 07:50:05,414 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 07:50:05,414 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 07:50:05,414 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 07:50:05,414 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 07:50:05,414 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 07:50:05,415 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 07:50:05,415 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 07:50:05,415 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 07:50:05,441 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states. [2020-09-25 07:50:05,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-25 07:50:05,449 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:50:05,450 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:50:05,451 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:50:05,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:50:05,459 INFO L82 PathProgramCache]: Analyzing trace with hash 815166367, now seen corresponding path program 1 times [2020-09-25 07:50:05,471 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:50:05,471 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1748459345] [2020-09-25 07:50:05,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:50:05,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:05,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:05,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:06,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:06,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:50:06,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:50:06,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 384 [2020-09-25 07:50:06,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:06,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:06,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:50:06,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 07:50:06,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:50:06,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 07:50:06,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:50:06,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:06,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:06,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:06,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:50:06,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:06,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 07:50:06,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:06,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:06,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:50:06,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:50:06,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:50:06,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:06,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:50:06,128 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1748459345] [2020-09-25 07:50:06,131 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:50:06,132 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 07:50:06,133 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767922389] [2020-09-25 07:50:06,139 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 07:50:06,140 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:50:06,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 07:50:06,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 07:50:06,161 INFO L87 Difference]: Start difference. First operand 156 states. Second operand 3 states. [2020-09-25 07:50:06,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:50:06,518 INFO L93 Difference]: Finished difference Result 277 states and 343 transitions. [2020-09-25 07:50:06,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 07:50:06,521 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-09-25 07:50:06,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:50:06,536 INFO L225 Difference]: With dead ends: 277 [2020-09-25 07:50:06,536 INFO L226 Difference]: Without dead ends: 144 [2020-09-25 07:50:06,541 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 07:50:06,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-09-25 07:50:06,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2020-09-25 07:50:06,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-09-25 07:50:06,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 154 transitions. [2020-09-25 07:50:06,603 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 154 transitions. Word has length 18 [2020-09-25 07:50:06,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:50:06,603 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 154 transitions. [2020-09-25 07:50:06,603 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 07:50:06,603 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 154 transitions. [2020-09-25 07:50:06,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-25 07:50:06,604 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:50:06,604 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:50:06,605 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 07:50:06,605 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:50:06,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:50:06,606 INFO L82 PathProgramCache]: Analyzing trace with hash 626661666, now seen corresponding path program 1 times [2020-09-25 07:50:06,606 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:50:06,606 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1373958209] [2020-09-25 07:50:06,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:50:06,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:06,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:06,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:06,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:06,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 07:50:06,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:50:06,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-09-25 07:50:06,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:06,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:06,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:50:06,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 07:50:06,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 07:50:06,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:06,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:50:06,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:06,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:06,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:06,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:50:06,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:06,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 07:50:06,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:06,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:06,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:50:06,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:50:06,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:50:06,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:06,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:50:06,884 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1373958209] [2020-09-25 07:50:06,884 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:50:06,884 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 07:50:06,885 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784482232] [2020-09-25 07:50:06,887 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 07:50:06,887 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:50:06,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 07:50:06,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 07:50:06,888 INFO L87 Difference]: Start difference. First operand 144 states and 154 transitions. Second operand 4 states. [2020-09-25 07:50:07,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:50:07,222 INFO L93 Difference]: Finished difference Result 295 states and 318 transitions. [2020-09-25 07:50:07,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 07:50:07,223 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-09-25 07:50:07,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:50:07,225 INFO L225 Difference]: With dead ends: 295 [2020-09-25 07:50:07,225 INFO L226 Difference]: Without dead ends: 165 [2020-09-25 07:50:07,227 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 07:50:07,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-09-25 07:50:07,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 160. [2020-09-25 07:50:07,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-09-25 07:50:07,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 171 transitions. [2020-09-25 07:50:07,242 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 171 transitions. Word has length 20 [2020-09-25 07:50:07,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:50:07,242 INFO L479 AbstractCegarLoop]: Abstraction has 160 states and 171 transitions. [2020-09-25 07:50:07,242 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 07:50:07,242 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 171 transitions. [2020-09-25 07:50:07,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-25 07:50:07,243 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:50:07,244 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:50:07,244 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 07:50:07,244 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:50:07,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:50:07,245 INFO L82 PathProgramCache]: Analyzing trace with hash 1840738898, now seen corresponding path program 1 times [2020-09-25 07:50:07,245 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:50:07,245 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [375711307] [2020-09-25 07:50:07,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:50:07,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:07,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:07,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:07,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 07:50:07,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:07,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 216 [2020-09-25 07:50:07,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:07,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:07,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:50:07,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 07:50:07,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 07:50:07,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:07,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:50:07,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:07,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:07,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:07,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:50:07,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:07,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 07:50:07,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:07,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:07,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:50:07,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:50:07,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:50:07,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:07,573 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 07:50:07,573 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [375711307] [2020-09-25 07:50:07,574 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:50:07,574 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 07:50:07,574 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578304297] [2020-09-25 07:50:07,575 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 07:50:07,575 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:50:07,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 07:50:07,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 07:50:07,576 INFO L87 Difference]: Start difference. First operand 160 states and 171 transitions. Second operand 6 states. [2020-09-25 07:50:07,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:50:07,959 INFO L93 Difference]: Finished difference Result 262 states and 280 transitions. [2020-09-25 07:50:07,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 07:50:07,959 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2020-09-25 07:50:07,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:50:07,962 INFO L225 Difference]: With dead ends: 262 [2020-09-25 07:50:07,962 INFO L226 Difference]: Without dead ends: 260 [2020-09-25 07:50:07,962 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-25 07:50:07,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2020-09-25 07:50:07,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 158. [2020-09-25 07:50:07,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-09-25 07:50:07,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 169 transitions. [2020-09-25 07:50:07,976 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 169 transitions. Word has length 38 [2020-09-25 07:50:07,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:50:07,977 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 169 transitions. [2020-09-25 07:50:07,977 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 07:50:07,977 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 169 transitions. [2020-09-25 07:50:07,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-09-25 07:50:07,979 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:50:07,979 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:50:07,980 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 07:50:07,980 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:50:07,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:50:07,980 INFO L82 PathProgramCache]: Analyzing trace with hash 24683595, now seen corresponding path program 1 times [2020-09-25 07:50:07,981 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:50:07,981 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1762468068] [2020-09-25 07:50:07,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:50:08,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:08,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:08,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:08,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:08,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:10,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:11,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:13,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:13,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 07:50:13,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 07:50:13,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 07:50:13,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:13,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:13,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:50:13,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-09-25 07:50:13,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 07:50:13,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:13,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:50:13,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:13,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:13,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:13,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:50:13,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:13,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 07:50:13,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:13,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:13,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:50:13,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:50:13,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:50:13,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:13,070 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 07:50:13,070 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1762468068] [2020-09-25 07:50:13,071 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:50:13,071 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 07:50:13,071 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6929366] [2020-09-25 07:50:13,072 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 07:50:13,072 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:50:13,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 07:50:13,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 07:50:13,073 INFO L87 Difference]: Start difference. First operand 158 states and 169 transitions. Second operand 4 states. [2020-09-25 07:50:13,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:50:13,264 INFO L93 Difference]: Finished difference Result 244 states and 261 transitions. [2020-09-25 07:50:13,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 07:50:13,265 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 61 [2020-09-25 07:50:13,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:50:13,267 INFO L225 Difference]: With dead ends: 244 [2020-09-25 07:50:13,267 INFO L226 Difference]: Without dead ends: 159 [2020-09-25 07:50:13,268 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 07:50:13,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-09-25 07:50:13,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2020-09-25 07:50:13,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-09-25 07:50:13,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 170 transitions. [2020-09-25 07:50:13,279 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 170 transitions. Word has length 61 [2020-09-25 07:50:13,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:50:13,280 INFO L479 AbstractCegarLoop]: Abstraction has 159 states and 170 transitions. [2020-09-25 07:50:13,280 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 07:50:13,280 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 170 transitions. [2020-09-25 07:50:13,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-25 07:50:13,282 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:50:13,282 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:50:13,282 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 07:50:13,283 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:50:13,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:50:13,283 INFO L82 PathProgramCache]: Analyzing trace with hash -158274674, now seen corresponding path program 1 times [2020-09-25 07:50:13,283 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:50:13,284 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [756055910] [2020-09-25 07:50:13,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:50:13,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:13,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:13,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:13,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:14,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:17,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:17,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-09-25 07:50:17,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 07:50:17,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4231 [2020-09-25 07:50:17,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:17,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:17,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:50:17,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 07:50:17,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 07:50:17,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:17,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:50:17,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:50:17,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:50:17,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:50:17,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:50:17,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:50:17,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 07:50:17,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:50:17,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:50:17,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:50:17,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:50:17,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:50:17,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:50:17,754 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 07:50:17,755 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [756055910] [2020-09-25 07:50:17,755 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:50:17,756 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 07:50:17,756 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655614574] [2020-09-25 07:50:17,757 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 07:50:17,757 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:50:17,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 07:50:17,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 07:50:17,758 INFO L87 Difference]: Start difference. First operand 159 states and 170 transitions. Second operand 8 states. [2020-09-25 07:50:18,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:50:18,263 INFO L93 Difference]: Finished difference Result 271 states and 289 transitions. [2020-09-25 07:50:18,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 07:50:18,264 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 63 [2020-09-25 07:50:18,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:50:18,266 INFO L225 Difference]: With dead ends: 271 [2020-09-25 07:50:18,266 INFO L226 Difference]: Without dead ends: 185 [2020-09-25 07:50:18,267 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2020-09-25 07:50:18,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-09-25 07:50:18,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 167. [2020-09-25 07:50:18,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-09-25 07:50:18,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 179 transitions. [2020-09-25 07:50:18,276 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 179 transitions. Word has length 63 [2020-09-25 07:50:18,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:50:18,277 INFO L479 AbstractCegarLoop]: Abstraction has 167 states and 179 transitions. [2020-09-25 07:50:18,277 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 07:50:18,277 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 179 transitions. [2020-09-25 07:50:18,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-09-25 07:50:18,281 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:50:18,282 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:50:18,282 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 07:50:18,282 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:50:18,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:50:18,283 INFO L82 PathProgramCache]: Analyzing trace with hash -1072824646, now seen corresponding path program 1 times [2020-09-25 07:50:18,283 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:50:18,283 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1497380661] [2020-09-25 07:50:18,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:50:18,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 07:50:18,311 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 07:50:18,311 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 07:50:18,316 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 07:50:18,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 07:50:18 BoogieIcfgContainer [2020-09-25 07:50:18,339 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 07:50:18,342 INFO L168 Benchmark]: Toolchain (without parser) took 14652.57 ms. Allocated memory was 141.0 MB in the beginning and 334.5 MB in the end (delta: 193.5 MB). Free memory was 101.6 MB in the beginning and 245.5 MB in the end (delta: -143.9 MB). Peak memory consumption was 49.6 MB. Max. memory is 7.1 GB. [2020-09-25 07:50:18,343 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 141.0 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 07:50:18,344 INFO L168 Benchmark]: CACSL2BoogieTranslator took 701.18 ms. Allocated memory was 141.0 MB in the beginning and 205.5 MB in the end (delta: 64.5 MB). Free memory was 100.9 MB in the beginning and 172.8 MB in the end (delta: -71.9 MB). Peak memory consumption was 26.0 MB. Max. memory is 7.1 GB. [2020-09-25 07:50:18,345 INFO L168 Benchmark]: Boogie Preprocessor took 90.92 ms. Allocated memory is still 205.5 MB. Free memory was 172.8 MB in the beginning and 169.5 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. [2020-09-25 07:50:18,346 INFO L168 Benchmark]: RCFGBuilder took 844.50 ms. Allocated memory is still 205.5 MB. Free memory was 169.5 MB in the beginning and 108.2 MB in the end (delta: 61.3 MB). Peak memory consumption was 61.3 MB. Max. memory is 7.1 GB. [2020-09-25 07:50:18,347 INFO L168 Benchmark]: TraceAbstraction took 13006.03 ms. Allocated memory was 205.5 MB in the beginning and 334.5 MB in the end (delta: 129.0 MB). Free memory was 107.6 MB in the beginning and 245.5 MB in the end (delta: -137.9 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 07:50:18,350 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 141.0 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 701.18 ms. Allocated memory was 141.0 MB in the beginning and 205.5 MB in the end (delta: 64.5 MB). Free memory was 100.9 MB in the beginning and 172.8 MB in the end (delta: -71.9 MB). Peak memory consumption was 26.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 90.92 ms. Allocated memory is still 205.5 MB. Free memory was 172.8 MB in the beginning and 169.5 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 844.50 ms. Allocated memory is still 205.5 MB. Free memory was 169.5 MB in the beginning and 108.2 MB in the end (delta: 61.3 MB). Peak memory consumption was 61.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 13006.03 ms. Allocated memory was 205.5 MB in the beginning and 334.5 MB in the end (delta: 129.0 MB). Free memory was 107.6 MB in the beginning and 245.5 MB in the end (delta: -137.9 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1027]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L986] SLL* head = malloc(sizeof(SLL)); [L987] head->next = ((void*)0) [L988] head->prev = ((void*)0) [L989] head->data = 0 [L991] SLL* x = head; [L992] int marked = 0; [L995] COND TRUE __VERIFIER_nondet_int() || !marked [L998] x->next = malloc(sizeof(SLL)) [L999] EXPR x->next [L999] x->next->prev = x [L1000] EXPR x->next [L1000] x = x->next [L1001] x->next = ((void*)0) [L1003] COND TRUE __VERIFIER_nondet_int() [L1005] marked = 1 [L1008] COND TRUE \read(marked) [L1009] x->data = 1 [L995] COND FALSE !(__VERIFIER_nondet_int() || !marked) [L1014] x = head [L1016] COND FALSE !(!(((void*)0) != x)) [L1017] marked = 0 [L1019] EXPR x->next [L1019] x->next != ((void*)0) && x->next->data == 0 [L1019] EXPR x->next [L1019] EXPR x->next->data [L1019] x->next != ((void*)0) && x->next->data == 0 [L1019] COND FALSE !(x->next != ((void*)0) && x->next->data == 0) [L1024] EXPR x->next [L1024] x->next != ((void*)0) && __VERIFIER_nondet_int() [L1024] x->next != ((void*)0) && __VERIFIER_nondet_int() [L1024] COND TRUE x->next != ((void*)0) && __VERIFIER_nondet_int() [L1026] EXPR x->next [L1026] x = x->next [L1027] EXPR x->data [L1027] COND TRUE !(x->data != 1) [L1027] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 156 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 12.9s, OverallIterations: 6, TraceHistogramMax: 2, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 729 SDtfs, 765 SDslu, 804 SDs, 0 SdLazy, 995 SolverSat, 25 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 37 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=167occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 125 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 10.5s InterpolantComputationTime, 266 NumberOfCodeBlocks, 266 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 195 ConstructedInterpolants, 0 QuantifiedInterpolants, 28647 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 6/6 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...