/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=0.1 --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-circular-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:05:10,549 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:05:10,553 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:05:10,592 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:05:10,593 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:05:10,601 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:05:10,604 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:05:10,608 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:05:10,611 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:05:10,614 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:05:10,615 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:05:10,617 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:05:10,617 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:05:10,621 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:05:10,624 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:05:10,627 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:05:10,629 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:05:10,630 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:05:10,632 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:05:10,641 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:05:10,643 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:05:10,645 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:05:10,646 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:05:10,647 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:05:10,659 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:05:10,660 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:05:10,660 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:05:10,667 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:05:10,668 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:05:10,669 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:05:10,669 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:05:10,673 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:05:10,674 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:05:10,675 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:05:10,678 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:05:10,679 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:05:10,680 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:05:10,680 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:05:10,680 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:05:10,681 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:05:10,682 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:05:10,683 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 10:05:10,711 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:05:10,711 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:05:10,713 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:05:10,713 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:05:10,713 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:05:10,714 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:05:10,714 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:05:10,714 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:05:10,714 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:05:10,714 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:05:10,715 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:05:10,715 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:05:10,715 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:05:10,715 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:05:10,715 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:05:10,716 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:05:10,716 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:05:10,716 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:05:10,716 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:05:10,716 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:05:10,717 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:05:10,717 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:05:10,717 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:05:10,717 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:05:10,717 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:05:10,718 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:05:10,718 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:05:10,718 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:05:10,718 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:05:10,718 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=0.1;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=0.1;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=0.1;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=0.1;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=0.1;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=0.1;log-additional-information=true; [2020-09-25 10:05:11,214 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:05:11,235 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:05:11,240 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:05:11,242 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:05:11,242 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:05:11,243 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-circular-1.i [2020-09-25 10:05:11,323 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0f5067199/0cf4b0328f354ede925a1c5b798d1795/FLAG220b5f41b [2020-09-25 10:05:12,058 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:05:12,059 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/dll-circular-1.i [2020-09-25 10:05:12,074 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0f5067199/0cf4b0328f354ede925a1c5b798d1795/FLAG220b5f41b [2020-09-25 10:05:12,282 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0f5067199/0cf4b0328f354ede925a1c5b798d1795 [2020-09-25 10:05:12,297 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:05:12,304 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:05:12,305 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:05:12,306 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:05:12,311 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:05:12,312 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:05:12" (1/1) ... [2020-09-25 10:05:12,317 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a4700e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:12, skipping insertion in model container [2020-09-25 10:05:12,317 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:05:12" (1/1) ... [2020-09-25 10:05:12,327 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:05:12,373 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:05:12,818 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:05:12,834 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:05:12,925 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:05:12,983 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:05:12,984 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:12 WrapperNode [2020-09-25 10:05:12,984 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:05:12,985 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:05:12,985 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:05:12,985 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:05:13,003 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:12" (1/1) ... [2020-09-25 10:05:13,004 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:12" (1/1) ... [2020-09-25 10:05:13,023 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:12" (1/1) ... [2020-09-25 10:05:13,023 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:12" (1/1) ... [2020-09-25 10:05:13,047 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:12" (1/1) ... [2020-09-25 10:05:13,063 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:12" (1/1) ... [2020-09-25 10:05:13,070 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:12" (1/1) ... [2020-09-25 10:05:13,083 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:05:13,085 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:05:13,085 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:05:13,085 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:05:13,087 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:12" (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 10:05:13,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:05:13,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:05:13,174 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:05:13,174 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-25 10:05:13,174 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-25 10:05:13,174 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-25 10:05:13,174 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-25 10:05:13,175 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-25 10:05:13,175 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-25 10:05:13,175 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-25 10:05:13,175 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-25 10:05:13,175 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-25 10:05:13,176 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-25 10:05:13,176 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-25 10:05:13,176 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-25 10:05:13,176 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-25 10:05:13,176 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-25 10:05:13,176 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-25 10:05:13,177 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-25 10:05:13,177 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-25 10:05:13,177 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-25 10:05:13,177 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-25 10:05:13,177 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-25 10:05:13,178 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-25 10:05:13,178 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-25 10:05:13,178 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-25 10:05:13,178 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-25 10:05:13,178 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-25 10:05:13,178 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-25 10:05:13,179 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-25 10:05:13,179 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-25 10:05:13,179 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-25 10:05:13,179 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-25 10:05:13,179 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-25 10:05:13,179 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-25 10:05:13,180 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-25 10:05:13,180 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-25 10:05:13,180 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-25 10:05:13,180 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-25 10:05:13,180 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-25 10:05:13,181 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-25 10:05:13,181 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-25 10:05:13,181 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-25 10:05:13,181 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-25 10:05:13,181 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-25 10:05:13,181 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-25 10:05:13,181 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-25 10:05:13,181 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-25 10:05:13,182 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-25 10:05:13,182 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-25 10:05:13,182 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-25 10:05:13,182 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-25 10:05:13,182 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-25 10:05:13,182 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 10:05:13,183 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 10:05:13,183 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-25 10:05:13,183 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 10:05:13,183 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-25 10:05:13,183 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-25 10:05:13,183 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-25 10:05:13,183 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-25 10:05:13,184 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-25 10:05:13,184 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 10:05:13,184 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-25 10:05:13,184 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-25 10:05:13,184 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-25 10:05:13,184 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 10:05:13,184 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-25 10:05:13,185 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-25 10:05:13,185 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-25 10:05:13,185 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-25 10:05:13,185 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-25 10:05:13,185 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-25 10:05:13,185 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-25 10:05:13,186 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-25 10:05:13,186 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-25 10:05:13,186 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-25 10:05:13,186 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-25 10:05:13,186 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-25 10:05:13,186 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-25 10:05:13,187 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-25 10:05:13,187 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-25 10:05:13,187 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-25 10:05:13,187 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-25 10:05:13,187 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-25 10:05:13,187 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-25 10:05:13,188 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-25 10:05:13,188 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-25 10:05:13,188 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-25 10:05:13,188 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-25 10:05:13,188 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-25 10:05:13,188 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-25 10:05:13,188 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-25 10:05:13,188 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-25 10:05:13,188 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-25 10:05:13,189 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-25 10:05:13,189 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-25 10:05:13,189 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-25 10:05:13,189 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-25 10:05:13,189 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-25 10:05:13,189 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-25 10:05:13,189 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-25 10:05:13,189 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-25 10:05:13,189 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-25 10:05:13,190 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-25 10:05:13,190 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-25 10:05:13,190 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 10:05:13,190 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:05:13,190 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:05:13,190 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 10:05:13,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 10:05:13,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 10:05:13,190 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 10:05:13,190 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 10:05:13,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 10:05:13,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:05:13,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:05:13,845 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:05:13,845 INFO L295 CfgBuilder]: Removed 9 assume(true) statements. [2020-09-25 10:05:13,851 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:05:13 BoogieIcfgContainer [2020-09-25 10:05:13,851 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:05:13,853 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:05:13,853 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:05:13,857 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:05:13,857 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:05:12" (1/3) ... [2020-09-25 10:05:13,858 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43b53be6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:05:13, skipping insertion in model container [2020-09-25 10:05:13,858 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:12" (2/3) ... [2020-09-25 10:05:13,859 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43b53be6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:05:13, skipping insertion in model container [2020-09-25 10:05:13,859 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:05:13" (3/3) ... [2020-09-25 10:05:13,862 INFO L109 eAbstractionObserver]: Analyzing ICFG dll-circular-1.i [2020-09-25 10:05:13,874 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:05:13,886 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-09-25 10:05:13,909 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-09-25 10:05:13,941 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:05:13,941 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:05:13,941 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:05:13,942 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:05:13,942 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:05:13,942 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:05:13,942 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:05:13,942 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:05:13,968 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states. [2020-09-25 10:05:13,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-25 10:05:13,978 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:05:13,979 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 10:05:13,980 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:05:13,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:05:13,988 INFO L82 PathProgramCache]: Analyzing trace with hash -740897811, now seen corresponding path program 1 times [2020-09-25 10:05:14,000 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:05:14,000 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1296508956] [2020-09-25 10:05:14,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:05:14,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:14,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:14,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:14,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:14,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 10:05:14,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:05:14,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 623 [2020-09-25 10:05:14,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:14,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:14,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:05:14,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 10:05:14,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 10:05:14,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 10:05:15,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:05:15,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:15,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:15,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:15,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:05:15,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:05:15,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 10:05:15,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:15,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:15,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:05:15,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:05:15,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:05:15,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:05:15,101 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 10:05:15,102 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1296508956] [2020-09-25 10:05:15,105 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:05:15,105 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-25 10:05:15,106 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179328349] [2020-09-25 10:05:15,113 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 10:05:15,113 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:05:15,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 10:05:15,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-25 10:05:15,137 INFO L87 Difference]: Start difference. First operand 96 states. Second operand 9 states. [2020-09-25 10:05:15,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:05:15,737 INFO L93 Difference]: Finished difference Result 280 states and 337 transitions. [2020-09-25 10:05:15,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 10:05:15,740 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 20 [2020-09-25 10:05:15,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:05:15,757 INFO L225 Difference]: With dead ends: 280 [2020-09-25 10:05:15,757 INFO L226 Difference]: Without dead ends: 153 [2020-09-25 10:05:15,764 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2020-09-25 10:05:15,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-09-25 10:05:15,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 85. [2020-09-25 10:05:15,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-09-25 10:05:15,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 91 transitions. [2020-09-25 10:05:15,832 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 91 transitions. Word has length 20 [2020-09-25 10:05:15,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:05:15,833 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 91 transitions. [2020-09-25 10:05:15,833 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 10:05:15,833 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 91 transitions. [2020-09-25 10:05:15,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-25 10:05:15,835 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:05:15,836 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] [2020-09-25 10:05:15,836 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:05:15,836 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:05:15,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:05:15,837 INFO L82 PathProgramCache]: Analyzing trace with hash 807179936, now seen corresponding path program 1 times [2020-09-25 10:05:15,837 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:05:15,838 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1475061710] [2020-09-25 10:05:15,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:05:15,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:15,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:16,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:16,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:16,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 10:05:16,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:05:16,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 808 [2020-09-25 10:05:16,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:16,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:16,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:05:16,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 10:05:16,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 10:05:16,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:05:16,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:05:16,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:16,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:16,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:16,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:05:16,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:05:16,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 10:05:16,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:16,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:16,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:05:16,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:05:16,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:05:16,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:05:16,823 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 10:05:16,824 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1475061710] [2020-09-25 10:05:16,824 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:05:16,825 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-25 10:05:16,825 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011905037] [2020-09-25 10:05:16,827 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 10:05:16,828 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:05:16,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 10:05:16,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-09-25 10:05:16,829 INFO L87 Difference]: Start difference. First operand 85 states and 91 transitions. Second operand 10 states. [2020-09-25 10:05:17,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:05:17,168 INFO L93 Difference]: Finished difference Result 88 states and 94 transitions. [2020-09-25 10:05:17,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 10:05:17,169 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 31 [2020-09-25 10:05:17,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:05:17,170 INFO L225 Difference]: With dead ends: 88 [2020-09-25 10:05:17,171 INFO L226 Difference]: Without dead ends: 86 [2020-09-25 10:05:17,172 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2020-09-25 10:05:17,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-09-25 10:05:17,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 83. [2020-09-25 10:05:17,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-09-25 10:05:17,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 89 transitions. [2020-09-25 10:05:17,183 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 89 transitions. Word has length 31 [2020-09-25 10:05:17,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:05:17,184 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 89 transitions. [2020-09-25 10:05:17,184 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 10:05:17,184 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 89 transitions. [2020-09-25 10:05:17,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-25 10:05:17,186 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:05:17,186 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] [2020-09-25 10:05:17,187 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:05:17,187 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:05:17,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:05:17,187 INFO L82 PathProgramCache]: Analyzing trace with hash -988969633, now seen corresponding path program 1 times [2020-09-25 10:05:17,188 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:05:17,188 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [119426871] [2020-09-25 10:05:17,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:05:17,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:17,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:17,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:18,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:19,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:19,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-25 10:05:19,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 10:05:19,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2349 [2020-09-25 10:05:19,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:19,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:19,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 10:05:19,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 10:05:19,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 10:05:19,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:05:19,636 ERROR L253 erpolLogProxyWrapper]: Interpolant 16 not inductive [2020-09-25 10:05:19,658 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:05:19,659 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: generated interpolants did not pass sanity check at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:219) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:849) at de.uni_freiburg.informatik.ultimate.smtinterpol.muses.MusEnumerationScript.getInterpolants(MusEnumerationScript.java:155) at de.uni_freiburg.informatik.ultimate.smtinterpol.muses.MusEnumerationScript.getInterpolants(MusEnumerationScript.java:256) at de.uni_freiburg.informatik.ultimate.smtinterpol.muses.MusEnumerationScript.getInterpolants(MusEnumerationScript.java:150) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.getInterpolants(ManagedScript.java:191) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:285) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:166) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:326) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:228) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:106) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:508) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:370) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-09-25 10:05:19,668 INFO L168 Benchmark]: Toolchain (without parser) took 7365.43 ms. Allocated memory was 140.0 MB in the beginning and 291.0 MB in the end (delta: 151.0 MB). Free memory was 101.6 MB in the beginning and 173.0 MB in the end (delta: -71.4 MB). Peak memory consumption was 119.7 MB. Max. memory is 7.1 GB. [2020-09-25 10:05:19,669 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 10:05:19,670 INFO L168 Benchmark]: CACSL2BoogieTranslator took 679.13 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 101.0 MB in the beginning and 171.0 MB in the end (delta: -70.1 MB). Peak memory consumption was 25.2 MB. Max. memory is 7.1 GB. [2020-09-25 10:05:19,672 INFO L168 Benchmark]: Boogie Preprocessor took 100.00 ms. Allocated memory is still 203.9 MB. Free memory was 171.0 MB in the beginning and 168.3 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. [2020-09-25 10:05:19,673 INFO L168 Benchmark]: RCFGBuilder took 766.45 ms. Allocated memory is still 203.9 MB. Free memory was 168.3 MB in the beginning and 118.6 MB in the end (delta: 49.7 MB). Peak memory consumption was 49.7 MB. Max. memory is 7.1 GB. [2020-09-25 10:05:19,675 INFO L168 Benchmark]: TraceAbstraction took 5809.79 ms. Allocated memory was 203.9 MB in the beginning and 291.0 MB in the end (delta: 87.0 MB). Free memory was 117.9 MB in the beginning and 173.0 MB in the end (delta: -55.1 MB). Peak memory consumption was 72.1 MB. Max. memory is 7.1 GB. [2020-09-25 10:05:19,686 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 679.13 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 101.0 MB in the beginning and 171.0 MB in the end (delta: -70.1 MB). Peak memory consumption was 25.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 100.00 ms. Allocated memory is still 203.9 MB. Free memory was 171.0 MB in the beginning and 168.3 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 766.45 ms. Allocated memory is still 203.9 MB. Free memory was 168.3 MB in the beginning and 118.6 MB in the end (delta: 49.7 MB). Peak memory consumption was 49.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5809.79 ms. Allocated memory was 203.9 MB in the beginning and 291.0 MB in the end (delta: 87.0 MB). Free memory was 117.9 MB in the beginning and 173.0 MB in the end (delta: -55.1 MB). Peak memory consumption was 72.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: generated interpolants did not pass sanity check de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: generated interpolants did not pass sanity check: de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:219) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...