/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 --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-token-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:35:39,705 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:35:39,711 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:35:39,758 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:35:39,759 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:35:39,767 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:35:39,770 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:35:39,774 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:35:39,777 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:35:39,781 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:35:39,782 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:35:39,783 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:35:39,783 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:35:39,787 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:35:39,790 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:35:39,792 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:35:39,794 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:35:39,795 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:35:39,797 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:35:39,806 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:35:39,808 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:35:39,810 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:35:39,811 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:35:39,811 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:35:39,825 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:35:39,825 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:35:39,825 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:35:39,832 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:35:39,832 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:35:39,833 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:35:39,834 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:35:39,837 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:35:39,838 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:35:39,838 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:35:39,843 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:35:39,843 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:35:39,845 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:35:39,845 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:35:39,845 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:35:39,846 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:35:39,847 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:35:39,849 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 14:35:39,894 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:35:39,894 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:35:39,897 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:35:39,897 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:35:39,897 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:35:39,897 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:35:39,898 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:35:39,898 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:35:39,898 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:35:39,898 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:35:39,900 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:35:39,900 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:35:39,900 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:35:39,901 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:35:39,901 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:35:39,901 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:35:39,901 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:35:39,901 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:35:39,902 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:35:39,902 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:35:39,902 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:35:39,902 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:35:39,903 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:35:39,903 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:35:39,903 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:35:39,903 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:35:39,903 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:35:39,904 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:35:39,904 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:35:39,904 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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; [2020-09-25 14:35:40,346 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:35:40,363 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:35:40,368 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:35:40,370 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:35:40,371 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:35:40,372 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-token-2.i [2020-09-25 14:35:40,454 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/74d13a51a/98805a7bbd7347df88a37221f16b402b/FLAG3f8735ae9 [2020-09-25 14:35:41,089 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:35:41,090 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/dll-token-2.i [2020-09-25 14:35:41,106 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/74d13a51a/98805a7bbd7347df88a37221f16b402b/FLAG3f8735ae9 [2020-09-25 14:35:41,347 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/74d13a51a/98805a7bbd7347df88a37221f16b402b [2020-09-25 14:35:41,363 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:35:41,369 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:35:41,371 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:35:41,371 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:35:41,375 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:35:41,377 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:35:41" (1/1) ... [2020-09-25 14:35:41,381 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1392f113 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:35:41, skipping insertion in model container [2020-09-25 14:35:41,382 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:35:41" (1/1) ... [2020-09-25 14:35:41,392 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:35:41,448 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:35:41,992 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:35:42,008 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:35:42,052 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:35:42,124 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:35:42,124 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:35:42 WrapperNode [2020-09-25 14:35:42,124 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:35:42,125 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:35:42,125 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:35:42,126 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:35:42,144 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:35:42" (1/1) ... [2020-09-25 14:35:42,145 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:35:42" (1/1) ... [2020-09-25 14:35:42,164 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:35:42" (1/1) ... [2020-09-25 14:35:42,165 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:35:42" (1/1) ... [2020-09-25 14:35:42,181 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:35:42" (1/1) ... [2020-09-25 14:35:42,190 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:35:42" (1/1) ... [2020-09-25 14:35:42,194 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:35:42" (1/1) ... [2020-09-25 14:35:42,200 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:35:42,201 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:35:42,201 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:35:42,201 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:35:42,203 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:35:42" (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 14:35:42,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:35:42,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:35:42,277 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:35:42,278 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-25 14:35:42,278 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-25 14:35:42,278 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-25 14:35:42,278 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-25 14:35:42,278 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-25 14:35:42,279 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-25 14:35:42,279 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-25 14:35:42,279 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-25 14:35:42,279 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-25 14:35:42,279 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-25 14:35:42,280 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-25 14:35:42,280 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-25 14:35:42,280 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-25 14:35:42,280 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-25 14:35:42,280 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-25 14:35:42,281 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-25 14:35:42,281 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-25 14:35:42,281 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-25 14:35:42,281 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-25 14:35:42,282 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-25 14:35:42,282 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-25 14:35:42,282 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-25 14:35:42,282 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-25 14:35:42,282 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-25 14:35:42,282 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-25 14:35:42,283 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-25 14:35:42,283 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-25 14:35:42,283 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-25 14:35:42,283 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-25 14:35:42,283 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-25 14:35:42,284 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-25 14:35:42,284 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-25 14:35:42,284 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-25 14:35:42,284 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-25 14:35:42,284 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-25 14:35:42,284 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-25 14:35:42,284 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-25 14:35:42,285 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-25 14:35:42,285 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-25 14:35:42,285 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-25 14:35:42,285 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-25 14:35:42,285 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-25 14:35:42,285 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-25 14:35:42,286 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-25 14:35:42,286 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-25 14:35:42,286 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-25 14:35:42,286 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-25 14:35:42,286 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-25 14:35:42,287 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-25 14:35:42,287 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-25 14:35:42,287 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 14:35:42,287 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 14:35:42,287 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-25 14:35:42,287 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 14:35:42,288 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-25 14:35:42,288 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-25 14:35:42,288 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-25 14:35:42,288 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-25 14:35:42,288 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-25 14:35:42,288 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 14:35:42,289 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-25 14:35:42,289 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-25 14:35:42,289 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-25 14:35:42,289 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 14:35:42,289 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-25 14:35:42,289 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-25 14:35:42,290 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-25 14:35:42,290 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-25 14:35:42,290 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-25 14:35:42,290 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-25 14:35:42,290 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-25 14:35:42,290 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-25 14:35:42,291 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-25 14:35:42,291 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-25 14:35:42,291 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-25 14:35:42,291 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-25 14:35:42,291 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-25 14:35:42,291 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-25 14:35:42,292 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-25 14:35:42,292 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-25 14:35:42,292 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-25 14:35:42,292 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-25 14:35:42,292 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-25 14:35:42,292 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-25 14:35:42,293 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-25 14:35:42,293 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-25 14:35:42,293 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-25 14:35:42,293 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-25 14:35:42,293 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-25 14:35:42,293 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-25 14:35:42,294 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-25 14:35:42,294 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-25 14:35:42,294 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-25 14:35:42,294 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-25 14:35:42,294 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-25 14:35:42,294 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-25 14:35:42,294 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-25 14:35:42,295 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-25 14:35:42,295 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-25 14:35:42,295 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-25 14:35:42,295 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-25 14:35:42,295 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-25 14:35:42,295 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-25 14:35:42,295 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 14:35:42,296 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:35:42,296 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:35:42,296 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 14:35:42,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 14:35:42,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 14:35:42,296 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 14:35:42,297 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 14:35:42,297 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 14:35:42,297 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:35:42,297 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:35:42,911 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:35:42,911 INFO L295 CfgBuilder]: Removed 15 assume(true) statements. [2020-09-25 14:35:42,917 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:35:42 BoogieIcfgContainer [2020-09-25 14:35:42,917 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:35:42,919 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:35:42,919 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:35:42,923 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:35:42,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:35:41" (1/3) ... [2020-09-25 14:35:42,924 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@170551e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:35:42, skipping insertion in model container [2020-09-25 14:35:42,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:35:42" (2/3) ... [2020-09-25 14:35:42,925 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@170551e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:35:42, skipping insertion in model container [2020-09-25 14:35:42,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:35:42" (3/3) ... [2020-09-25 14:35:42,928 INFO L109 eAbstractionObserver]: Analyzing ICFG dll-token-2.i [2020-09-25 14:35:42,941 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:35:42,953 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-09-25 14:35:42,977 INFO L251 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-09-25 14:35:43,012 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:35:43,012 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:35:43,013 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:35:43,013 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:35:43,013 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:35:43,013 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:35:43,013 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:35:43,013 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:35:43,043 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states. [2020-09-25 14:35:43,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-09-25 14:35:43,052 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:35:43,054 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:35:43,054 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 14:35:43,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:35:43,063 INFO L82 PathProgramCache]: Analyzing trace with hash 536950687, now seen corresponding path program 1 times [2020-09-25 14:35:43,075 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:35:43,076 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2070375177] [2020-09-25 14:35:43,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:35:43,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:35:43,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:35:43,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:35:43,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:35:43,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 14:35:43,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:35:43,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 676 [2020-09-25 14:35:43,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:35:43,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:35:43,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:35:43,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 14:35:43,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 14:35:43,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 14:35:44,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:35:44,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:35:44,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:35:44,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:35:44,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:35:44,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:35:44,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 14:35:44,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:35:44,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:35:44,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:35:44,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:35:44,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:35:44,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:35:44,165 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 14:35:44,166 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2070375177] [2020-09-25 14:35:44,168 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:35:44,169 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 14:35:44,170 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015420879] [2020-09-25 14:35:44,177 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 14:35:44,177 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:35:44,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 14:35:44,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:35:44,201 INFO L87 Difference]: Start difference. First operand 101 states. Second operand 6 states. [2020-09-25 14:35:44,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:35:44,711 INFO L93 Difference]: Finished difference Result 272 states and 338 transitions. [2020-09-25 14:35:44,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:35:44,715 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2020-09-25 14:35:44,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:35:44,731 INFO L225 Difference]: With dead ends: 272 [2020-09-25 14:35:44,731 INFO L226 Difference]: Without dead ends: 155 [2020-09-25 14:35:44,736 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-25 14:35:44,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-09-25 14:35:44,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 88. [2020-09-25 14:35:44,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-09-25 14:35:44,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 90 transitions. [2020-09-25 14:35:44,803 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 90 transitions. Word has length 26 [2020-09-25 14:35:44,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:35:44,804 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 90 transitions. [2020-09-25 14:35:44,804 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 14:35:44,804 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 90 transitions. [2020-09-25 14:35:44,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-25 14:35:44,805 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:35:44,805 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:35:44,806 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:35:44,806 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 14:35:44,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:35:44,807 INFO L82 PathProgramCache]: Analyzing trace with hash -692885691, now seen corresponding path program 1 times [2020-09-25 14:35:44,807 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:35:44,807 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1808071729] [2020-09-25 14:35:44,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:35:44,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:35:44,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:35:45,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:35:45,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:35:45,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 14:35:45,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:35:45,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 748 [2020-09-25 14:35:45,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:35:45,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:35:45,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:35:45,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 14:35:45,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 14:35:45,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:35:45,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:35:45,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:35:45,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:35:45,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:35:45,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:35:45,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:35:45,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 14:35:45,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:35:45,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:35:45,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:35:45,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:35:45,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:35:45,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:35:45,746 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 14:35:45,747 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1808071729] [2020-09-25 14:35:45,747 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:35:45,748 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 14:35:45,748 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571925482] [2020-09-25 14:35:45,750 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 14:35:45,751 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:35:45,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 14:35:45,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 14:35:45,752 INFO L87 Difference]: Start difference. First operand 88 states and 90 transitions. Second operand 8 states. [2020-09-25 14:35:46,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:35:46,405 INFO L93 Difference]: Finished difference Result 157 states and 161 transitions. [2020-09-25 14:35:46,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 14:35:46,406 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 27 [2020-09-25 14:35:46,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:35:46,409 INFO L225 Difference]: With dead ends: 157 [2020-09-25 14:35:46,409 INFO L226 Difference]: Without dead ends: 155 [2020-09-25 14:35:46,410 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2020-09-25 14:35:46,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-09-25 14:35:46,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 86. [2020-09-25 14:35:46,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-09-25 14:35:46,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 88 transitions. [2020-09-25 14:35:46,423 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 88 transitions. Word has length 27 [2020-09-25 14:35:46,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:35:46,424 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 88 transitions. [2020-09-25 14:35:46,424 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 14:35:46,424 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 88 transitions. [2020-09-25 14:35:46,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 14:35:46,426 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:35:46,427 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:35:46,427 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:35:46,427 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 14:35:46,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:35:46,428 INFO L82 PathProgramCache]: Analyzing trace with hash 578708441, now seen corresponding path program 1 times [2020-09-25 14:35:46,428 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:35:46,429 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1676963585] [2020-09-25 14:35:46,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:35:46,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:35:46,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:35:46,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:35:48,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:35:48,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-25 14:35:48,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:35:48,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1789 [2020-09-25 14:35:48,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:35:48,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:35:48,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 14:35:48,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 14:35:48,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 14:35:48,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:35:48,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:35:48,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:35:48,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:35:48,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:35:48,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:35:48,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:35:48,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 14:35:48,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:35:48,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:35:48,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:35:48,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:35:48,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:35:48,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:35:48,888 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 14:35:48,888 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1676963585] [2020-09-25 14:35:48,889 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:35:48,889 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-09-25 14:35:48,890 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548823827] [2020-09-25 14:35:48,891 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 14:35:48,892 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:35:48,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 14:35:48,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2020-09-25 14:35:48,893 INFO L87 Difference]: Start difference. First operand 86 states and 88 transitions. Second operand 14 states. [2020-09-25 14:35:50,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:35:50,431 INFO L93 Difference]: Finished difference Result 223 states and 229 transitions. [2020-09-25 14:35:50,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 14:35:50,432 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 35 [2020-09-25 14:35:50,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:35:50,434 INFO L225 Difference]: With dead ends: 223 [2020-09-25 14:35:50,434 INFO L226 Difference]: Without dead ends: 220 [2020-09-25 14:35:50,438 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=181, Invalid=521, Unknown=0, NotChecked=0, Total=702 [2020-09-25 14:35:50,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-09-25 14:35:50,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 106. [2020-09-25 14:35:50,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-09-25 14:35:50,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 110 transitions. [2020-09-25 14:35:50,465 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 110 transitions. Word has length 35 [2020-09-25 14:35:50,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:35:50,466 INFO L479 AbstractCegarLoop]: Abstraction has 106 states and 110 transitions. [2020-09-25 14:35:50,466 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 14:35:50,466 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 110 transitions. [2020-09-25 14:35:50,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 14:35:50,468 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:35:50,468 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:35:50,468 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:35:50,469 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 14:35:50,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:35:50,469 INFO L82 PathProgramCache]: Analyzing trace with hash 666566073, now seen corresponding path program 1 times [2020-09-25 14:35:50,470 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:35:50,470 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2144551107] [2020-09-25 14:35:50,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:35:50,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:35:50,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:35:51,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:35:51,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-25 14:35:51,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:35:51,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 731 [2020-09-25 14:35:51,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:35:51,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:35:51,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 14:35:51,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 14:35:51,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 14:35:51,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:35:51,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:35:51,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:35:51,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:35:51,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:35:51,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:35:51,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:35:51,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 14:35:51,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:35:51,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:35:51,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:35:51,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:35:51,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:35:51,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:35:51,656 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 14:35:51,657 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2144551107] [2020-09-25 14:35:51,657 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:35:51,657 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-09-25 14:35:51,658 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922702239] [2020-09-25 14:35:51,658 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 14:35:51,658 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:35:51,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 14:35:51,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2020-09-25 14:35:51,660 INFO L87 Difference]: Start difference. First operand 106 states and 110 transitions. Second operand 14 states. [2020-09-25 14:35:52,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:35:52,624 INFO L93 Difference]: Finished difference Result 233 states and 239 transitions. [2020-09-25 14:35:52,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 14:35:52,625 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 35 [2020-09-25 14:35:52,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:35:52,629 INFO L225 Difference]: With dead ends: 233 [2020-09-25 14:35:52,629 INFO L226 Difference]: Without dead ends: 187 [2020-09-25 14:35:52,632 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=171, Invalid=479, Unknown=0, NotChecked=0, Total=650 [2020-09-25 14:35:52,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-09-25 14:35:52,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 106. [2020-09-25 14:35:52,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-09-25 14:35:52,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 109 transitions. [2020-09-25 14:35:52,650 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 109 transitions. Word has length 35 [2020-09-25 14:35:52,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:35:52,650 INFO L479 AbstractCegarLoop]: Abstraction has 106 states and 109 transitions. [2020-09-25 14:35:52,653 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 14:35:52,654 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 109 transitions. [2020-09-25 14:35:52,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-09-25 14:35:52,655 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:35:52,655 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:35:52,656 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 14:35:52,656 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 14:35:52,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:35:52,657 INFO L82 PathProgramCache]: Analyzing trace with hash 957359950, now seen corresponding path program 1 times [2020-09-25 14:35:52,657 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:35:52,658 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [694608033] [2020-09-25 14:35:52,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:35:52,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 14:35:52,691 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 14:35:52,691 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 14:35:52,697 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 14:35:52,730 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 02:35:52 BoogieIcfgContainer [2020-09-25 14:35:52,730 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 14:35:52,734 INFO L168 Benchmark]: Toolchain (without parser) took 11367.97 ms. Allocated memory was 140.0 MB in the beginning and 304.1 MB in the end (delta: 164.1 MB). Free memory was 102.3 MB in the beginning and 100.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 165.7 MB. Max. memory is 7.1 GB. [2020-09-25 14:35:52,735 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 14:35:52,737 INFO L168 Benchmark]: CACSL2BoogieTranslator took 754.40 ms. Allocated memory was 140.0 MB in the beginning and 205.0 MB in the end (delta: 65.0 MB). Free memory was 101.7 MB in the beginning and 172.1 MB in the end (delta: -70.5 MB). Peak memory consumption was 25.1 MB. Max. memory is 7.1 GB. [2020-09-25 14:35:52,739 INFO L168 Benchmark]: Boogie Preprocessor took 75.36 ms. Allocated memory is still 205.0 MB. Free memory was 172.1 MB in the beginning and 168.7 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. [2020-09-25 14:35:52,745 INFO L168 Benchmark]: RCFGBuilder took 716.36 ms. Allocated memory is still 205.0 MB. Free memory was 168.7 MB in the beginning and 118.2 MB in the end (delta: 50.6 MB). Peak memory consumption was 50.6 MB. Max. memory is 7.1 GB. [2020-09-25 14:35:52,746 INFO L168 Benchmark]: TraceAbstraction took 9811.97 ms. Allocated memory was 205.0 MB in the beginning and 304.1 MB in the end (delta: 99.1 MB). Free memory was 117.5 MB in the beginning and 100.7 MB in the end (delta: 16.8 MB). Peak memory consumption was 115.9 MB. Max. memory is 7.1 GB. [2020-09-25 14:35:52,759 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 754.40 ms. Allocated memory was 140.0 MB in the beginning and 205.0 MB in the end (delta: 65.0 MB). Free memory was 101.7 MB in the beginning and 172.1 MB in the end (delta: -70.5 MB). Peak memory consumption was 25.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 75.36 ms. Allocated memory is still 205.0 MB. Free memory was 172.1 MB in the beginning and 168.7 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 716.36 ms. Allocated memory is still 205.0 MB. Free memory was 168.7 MB in the beginning and 118.2 MB in the end (delta: 50.6 MB). Peak memory consumption was 50.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 9811.97 ms. Allocated memory was 205.0 MB in the beginning and 304.1 MB in the end (delta: 99.1 MB). Free memory was 117.5 MB in the beginning and 100.7 MB in the end (delta: 16.8 MB). Peak memory consumption was 115.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1026]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L993] SLL* head = malloc(sizeof(SLL)); [L994] head->next = ((void*)0) [L995] head->prev = ((void*)0) [L996] head->data = 0 [L998] SLL* x = head; [L1001] COND FALSE !(__VERIFIER_nondet_int()) [L1010] x->data = 1 [L1011] x->next = malloc(sizeof(SLL)) [L1012] EXPR x->next [L1012] x->next->prev = x [L1013] EXPR x->next [L1013] x->next->data = 2 [L1015] x = head [L1017] COND FALSE !(!(((void*)0) != x)) [L1019] EXPR x->data [L1019] COND FALSE !(1 != x->data) [L1024] EXPR x->data [L1024] COND FALSE !(!(1 == x->data)) [L1025] EXPR x->next [L1025] x = x->next [L1026] EXPR x->data [L1026] COND TRUE !(2 != x->data) [L1026] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 101 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 9.6s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 3.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 325 SDtfs, 1468 SDslu, 1425 SDs, 0 SdLazy, 1265 SolverSat, 139 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 84 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=106occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 331 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 5.3s InterpolantComputationTime, 165 NumberOfCodeBlocks, 165 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 119 ConstructedInterpolants, 0 QuantifiedInterpolants, 31256 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 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...