/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 SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/forester-heap/dll-circular-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 04:49:31,085 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 04:49:31,089 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 04:49:31,130 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 04:49:31,130 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 04:49:31,139 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 04:49:31,141 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 04:49:31,143 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 04:49:31,145 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 04:49:31,149 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 04:49:31,149 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 04:49:31,150 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 04:49:31,151 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 04:49:31,151 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 04:49:31,152 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 04:49:31,153 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 04:49:31,154 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 04:49:31,155 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 04:49:31,157 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 04:49:31,158 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 04:49:31,160 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 04:49:31,161 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 04:49:31,162 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 04:49:31,163 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 04:49:31,165 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 04:49:31,165 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 04:49:31,165 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 04:49:31,166 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 04:49:31,166 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 04:49:31,167 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 04:49:31,168 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 04:49:31,168 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 04:49:31,169 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 04:49:31,170 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 04:49:31,171 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 04:49:31,171 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 04:49:31,171 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 04:49:31,172 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 04:49:31,172 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 04:49:31,173 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 04:49:31,173 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 04:49:31,174 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 [2020-10-14 04:49:31,196 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 04:49:31,196 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 04:49:31,197 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 04:49:31,197 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 04:49:31,198 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 04:49:31,198 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 04:49:31,198 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 04:49:31,198 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 04:49:31,198 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 04:49:31,199 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 04:49:31,199 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 04:49:31,199 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 04:49:31,199 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 04:49:31,199 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 04:49:31,200 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 04:49:31,200 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 04:49:31,200 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 04:49:31,200 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 04:49:31,200 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 04:49:31,201 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 04:49:31,201 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 04:49:31,201 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 04:49:31,201 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 04:49:31,201 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 04:49:31,202 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 04:49:31,202 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 04:49:31,202 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 04:49:31,202 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 04:49:31,202 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 04:49:31,202 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 -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 04:49:31,523 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 04:49:31,535 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 04:49:31,539 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 04:49:31,540 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 04:49:31,541 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 04:49:31,542 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-circular-2.i [2020-10-14 04:49:31,623 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/79817187e/ccc023a092c247cb95e13200ef00e336/FLAG29bf0cbf9 [2020-10-14 04:49:32,212 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 04:49:32,213 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/dll-circular-2.i [2020-10-14 04:49:32,227 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/79817187e/ccc023a092c247cb95e13200ef00e336/FLAG29bf0cbf9 [2020-10-14 04:49:32,525 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/79817187e/ccc023a092c247cb95e13200ef00e336 [2020-10-14 04:49:32,533 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 04:49:32,535 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 04:49:32,536 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 04:49:32,536 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 04:49:32,539 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 04:49:32,540 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:49:32" (1/1) ... [2020-10-14 04:49:32,543 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4740859e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:49:32, skipping insertion in model container [2020-10-14 04:49:32,543 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:49:32" (1/1) ... [2020-10-14 04:49:32,551 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 04:49:32,606 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 04:49:33,047 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:49:33,057 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 04:49:33,106 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:49:33,165 INFO L208 MainTranslator]: Completed translation [2020-10-14 04:49:33,167 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:49:33 WrapperNode [2020-10-14 04:49:33,167 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 04:49:33,168 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 04:49:33,169 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 04:49:33,169 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 04:49:33,183 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:49:33" (1/1) ... [2020-10-14 04:49:33,185 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:49:33" (1/1) ... [2020-10-14 04:49:33,202 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:49:33" (1/1) ... [2020-10-14 04:49:33,202 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:49:33" (1/1) ... [2020-10-14 04:49:33,221 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:49:33" (1/1) ... [2020-10-14 04:49:33,228 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:49:33" (1/1) ... [2020-10-14 04:49:33,232 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:49:33" (1/1) ... [2020-10-14 04:49:33,238 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 04:49:33,238 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 04:49:33,238 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 04:49:33,239 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 04:49:33,239 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:49:33" (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 [2020-10-14 04:49:33,305 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 04:49:33,305 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 04:49:33,305 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 04:49:33,306 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-14 04:49:33,306 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-14 04:49:33,306 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-14 04:49:33,306 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-14 04:49:33,306 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-14 04:49:33,306 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-14 04:49:33,307 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-14 04:49:33,307 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-14 04:49:33,307 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-14 04:49:33,307 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-14 04:49:33,307 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-14 04:49:33,307 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-14 04:49:33,308 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-14 04:49:33,308 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-14 04:49:33,308 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-14 04:49:33,308 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-14 04:49:33,308 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-14 04:49:33,308 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-14 04:49:33,309 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-14 04:49:33,309 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-14 04:49:33,309 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-14 04:49:33,309 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-14 04:49:33,309 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-14 04:49:33,309 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-14 04:49:33,310 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-14 04:49:33,310 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-14 04:49:33,310 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-14 04:49:33,310 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-14 04:49:33,310 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-14 04:49:33,310 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-14 04:49:33,310 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-14 04:49:33,311 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-14 04:49:33,311 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-14 04:49:33,311 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-14 04:49:33,311 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-14 04:49:33,311 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-14 04:49:33,311 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-14 04:49:33,311 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-14 04:49:33,312 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-14 04:49:33,312 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-14 04:49:33,312 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-14 04:49:33,312 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-14 04:49:33,312 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-14 04:49:33,312 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-14 04:49:33,313 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-14 04:49:33,313 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-14 04:49:33,313 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-14 04:49:33,313 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-14 04:49:33,313 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-14 04:49:33,313 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-14 04:49:33,314 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-14 04:49:33,314 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-14 04:49:33,314 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-14 04:49:33,314 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-14 04:49:33,314 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-14 04:49:33,314 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-14 04:49:33,314 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-14 04:49:33,315 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-14 04:49:33,315 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-14 04:49:33,315 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 04:49:33,315 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-14 04:49:33,315 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-14 04:49:33,315 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-14 04:49:33,315 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 04:49:33,316 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-14 04:49:33,316 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-14 04:49:33,316 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-14 04:49:33,316 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-14 04:49:33,316 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-14 04:49:33,316 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-14 04:49:33,317 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-14 04:49:33,317 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-14 04:49:33,317 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-14 04:49:33,317 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-14 04:49:33,317 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-14 04:49:33,317 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-14 04:49:33,317 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-14 04:49:33,318 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-14 04:49:33,318 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-14 04:49:33,318 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-14 04:49:33,318 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-14 04:49:33,318 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-14 04:49:33,318 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-14 04:49:33,318 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-14 04:49:33,319 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-14 04:49:33,319 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-14 04:49:33,319 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-14 04:49:33,319 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-14 04:49:33,319 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-14 04:49:33,319 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-14 04:49:33,319 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-14 04:49:33,320 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-14 04:49:33,320 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-14 04:49:33,320 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-14 04:49:33,320 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-14 04:49:33,320 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-14 04:49:33,320 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-14 04:49:33,320 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-14 04:49:33,321 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-14 04:49:33,321 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-14 04:49:33,321 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-14 04:49:33,321 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-14 04:49:33,321 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-14 04:49:33,321 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 04:49:33,321 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 04:49:33,322 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 04:49:33,322 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-14 04:49:33,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-14 04:49:33,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 04:49:33,322 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-14 04:49:33,322 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 04:49:33,322 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 04:49:33,323 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 04:49:33,323 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 04:49:33,807 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 04:49:33,807 INFO L295 CfgBuilder]: Removed 9 assume(true) statements. [2020-10-14 04:49:33,811 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:49:33 BoogieIcfgContainer [2020-10-14 04:49:33,812 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 04:49:33,813 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 04:49:33,814 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 04:49:33,817 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 04:49:33,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 04:49:32" (1/3) ... [2020-10-14 04:49:33,818 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7875325f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:49:33, skipping insertion in model container [2020-10-14 04:49:33,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:49:33" (2/3) ... [2020-10-14 04:49:33,819 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7875325f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:49:33, skipping insertion in model container [2020-10-14 04:49:33,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:49:33" (3/3) ... [2020-10-14 04:49:33,821 INFO L109 eAbstractionObserver]: Analyzing ICFG dll-circular-2.i [2020-10-14 04:49:33,832 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 04:49:33,840 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-10-14 04:49:33,854 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-14 04:49:33,879 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 04:49:33,880 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 04:49:33,880 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 04:49:33,880 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 04:49:33,880 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 04:49:33,881 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 04:49:33,881 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 04:49:33,881 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 04:49:33,904 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-10-14 04:49:33,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-14 04:49:33,910 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:49:33,911 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:49:33,912 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:49:33,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:49:33,919 INFO L82 PathProgramCache]: Analyzing trace with hash -1483997276, now seen corresponding path program 1 times [2020-10-14 04:49:33,928 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:49:33,929 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [279762688] [2020-10-14 04:49:33,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:49:34,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:49:34,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:34,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:34,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:49:34,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 04:49:34,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:49:34,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 336 [2020-10-14 04:49:34,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:49:34,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:49:34,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:49:34,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 04:49:34,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:49:34,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 04:49:34,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:49:34,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:49:34,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:34,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:49:34,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:49:34,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:49:34,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 04:49:34,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:49:34,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:49:34,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:49:34,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:49:34,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:49:34,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:49:34,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:49:34,573 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [279762688] [2020-10-14 04:49:34,575 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:49:34,576 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 04:49:34,577 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357156796] [2020-10-14 04:49:34,582 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 04:49:34,582 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:49:34,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 04:49:34,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 04:49:34,599 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 3 states. [2020-10-14 04:49:34,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:49:34,740 INFO L93 Difference]: Finished difference Result 70 states and 106 transitions. [2020-10-14 04:49:34,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 04:49:34,743 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-14 04:49:34,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:49:34,765 INFO L225 Difference]: With dead ends: 70 [2020-10-14 04:49:34,765 INFO L226 Difference]: Without dead ends: 30 [2020-10-14 04:49:34,770 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 04:49:34,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-14 04:49:34,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-10-14 04:49:34,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-14 04:49:34,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2020-10-14 04:49:34,820 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 10 [2020-10-14 04:49:34,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:49:34,820 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2020-10-14 04:49:34,820 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 04:49:34,821 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2020-10-14 04:49:34,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-14 04:49:34,821 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:49:34,822 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:49:34,822 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 04:49:34,822 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:49:34,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:49:34,823 INFO L82 PathProgramCache]: Analyzing trace with hash 1199756337, now seen corresponding path program 1 times [2020-10-14 04:49:34,823 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:49:34,823 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [113636012] [2020-10-14 04:49:34,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:49:34,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:49:34,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:34,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:49:34,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 04:49:34,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:49:34,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-14 04:49:34,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:49:34,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:49:34,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 04:49:34,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:49:34,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 04:49:34,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:49:35,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:49:35,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:49:35,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:35,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:49:35,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:49:35,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:49:35,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:49:35,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:49:35,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:49:35,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:49:35,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:49:35,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:49:35,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:49:35,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:49:35,088 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [113636012] [2020-10-14 04:49:35,088 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:49:35,088 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 04:49:35,088 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357717386] [2020-10-14 04:49:35,090 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:49:35,090 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:49:35,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:49:35,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:49:35,091 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand 5 states. [2020-10-14 04:49:35,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:49:35,237 INFO L93 Difference]: Finished difference Result 46 states and 53 transitions. [2020-10-14 04:49:35,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:49:35,238 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-10-14 04:49:35,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:49:35,239 INFO L225 Difference]: With dead ends: 46 [2020-10-14 04:49:35,239 INFO L226 Difference]: Without dead ends: 42 [2020-10-14 04:49:35,240 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:49:35,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-14 04:49:35,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 32. [2020-10-14 04:49:35,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-14 04:49:35,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2020-10-14 04:49:35,249 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 11 [2020-10-14 04:49:35,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:49:35,249 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2020-10-14 04:49:35,249 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:49:35,250 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2020-10-14 04:49:35,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-14 04:49:35,250 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:49:35,251 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:49:35,251 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 04:49:35,251 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:49:35,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:49:35,252 INFO L82 PathProgramCache]: Analyzing trace with hash -97127833, now seen corresponding path program 1 times [2020-10-14 04:49:35,252 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:49:35,252 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [433870290] [2020-10-14 04:49:35,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:49:35,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:49:35,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:35,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:35,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:49:35,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 04:49:35,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:49:35,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-14 04:49:35,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:49:35,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:49:35,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:49:35,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:49:35,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 04:49:35,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:49:35,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:49:35,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:49:35,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:35,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:49:35,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:49:35,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:49:35,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:49:35,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:49:35,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:49:35,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:49:35,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:49:35,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:49:35,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:49:35,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:49:35,437 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [433870290] [2020-10-14 04:49:35,437 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:49:35,437 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 04:49:35,438 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117089932] [2020-10-14 04:49:35,438 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 04:49:35,438 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:49:35,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 04:49:35,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 04:49:35,439 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand 4 states. [2020-10-14 04:49:35,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:49:35,527 INFO L93 Difference]: Finished difference Result 75 states and 90 transitions. [2020-10-14 04:49:35,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 04:49:35,527 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-14 04:49:35,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:49:35,530 INFO L225 Difference]: With dead ends: 75 [2020-10-14 04:49:35,531 INFO L226 Difference]: Without dead ends: 53 [2020-10-14 04:49:35,531 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 04:49:35,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-14 04:49:35,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 39. [2020-10-14 04:49:35,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-14 04:49:35,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 47 transitions. [2020-10-14 04:49:35,541 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 47 transitions. Word has length 14 [2020-10-14 04:49:35,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:49:35,542 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 47 transitions. [2020-10-14 04:49:35,542 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 04:49:35,542 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 47 transitions. [2020-10-14 04:49:35,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-14 04:49:35,543 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:49:35,543 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:49:35,543 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 04:49:35,544 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:49:35,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:49:35,544 INFO L82 PathProgramCache]: Analyzing trace with hash 2075944349, now seen corresponding path program 1 times [2020-10-14 04:49:35,544 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:49:35,545 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [272611180] [2020-10-14 04:49:35,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:49:35,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:49:35,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:35,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:35,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:49:35,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-14 04:49:35,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:49:35,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-14 04:49:35,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:49:35,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:49:35,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:49:35,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-14 04:49:35,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:49:35,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:49:35,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:49:35,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:49:35,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:35,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:49:35,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:49:35,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:49:35,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 04:49:35,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:49:35,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:49:35,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:49:35,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:49:35,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:49:35,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:49:35,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:49:35,740 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [272611180] [2020-10-14 04:49:35,741 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:49:35,741 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 04:49:35,741 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749446497] [2020-10-14 04:49:35,742 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 04:49:35,742 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:49:35,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 04:49:35,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 04:49:35,743 INFO L87 Difference]: Start difference. First operand 39 states and 47 transitions. Second operand 4 states. [2020-10-14 04:49:35,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:49:35,807 INFO L93 Difference]: Finished difference Result 42 states and 50 transitions. [2020-10-14 04:49:35,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 04:49:35,808 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-14 04:49:35,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:49:35,809 INFO L225 Difference]: With dead ends: 42 [2020-10-14 04:49:35,809 INFO L226 Difference]: Without dead ends: 40 [2020-10-14 04:49:35,809 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 04:49:35,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-14 04:49:35,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-10-14 04:49:35,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-14 04:49:35,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2020-10-14 04:49:35,819 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 17 [2020-10-14 04:49:35,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:49:35,820 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2020-10-14 04:49:35,820 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 04:49:35,820 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2020-10-14 04:49:35,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-14 04:49:35,821 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:49:35,821 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:49:35,821 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 04:49:35,821 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:49:35,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:49:35,822 INFO L82 PathProgramCache]: Analyzing trace with hash 2075946271, now seen corresponding path program 1 times [2020-10-14 04:49:35,822 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:49:35,824 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [953625993] [2020-10-14 04:49:35,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:49:35,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:49:35,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:35,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:49:35,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-14 04:49:35,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:49:35,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-14 04:49:35,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:49:35,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:49:35,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:49:35,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:49:35,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 04:49:35,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:49:36,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:49:36,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:49:36,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:36,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:49:36,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:49:36,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:49:36,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 04:49:36,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:49:36,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:49:36,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:49:36,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:49:36,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:49:36,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:49:36,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:49:36,052 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [953625993] [2020-10-14 04:49:36,052 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:49:36,052 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 04:49:36,053 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221118128] [2020-10-14 04:49:36,054 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 04:49:36,054 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:49:36,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 04:49:36,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:49:36,055 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 6 states. [2020-10-14 04:49:36,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:49:36,278 INFO L93 Difference]: Finished difference Result 51 states and 60 transitions. [2020-10-14 04:49:36,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 04:49:36,279 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-10-14 04:49:36,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:49:36,282 INFO L225 Difference]: With dead ends: 51 [2020-10-14 04:49:36,282 INFO L226 Difference]: Without dead ends: 38 [2020-10-14 04:49:36,283 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-14 04:49:36,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-14 04:49:36,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-10-14 04:49:36,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-14 04:49:36,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 45 transitions. [2020-10-14 04:49:36,290 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 45 transitions. Word has length 17 [2020-10-14 04:49:36,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:49:36,290 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 45 transitions. [2020-10-14 04:49:36,291 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 04:49:36,291 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 45 transitions. [2020-10-14 04:49:36,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-14 04:49:36,291 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:49:36,291 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:49:36,292 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 04:49:36,292 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:49:36,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:49:36,292 INFO L82 PathProgramCache]: Analyzing trace with hash -351040154, now seen corresponding path program 1 times [2020-10-14 04:49:36,292 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:49:36,292 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1967433388] [2020-10-14 04:49:36,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:49:36,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:49:36,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:36,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:49:36,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-14 04:49:36,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:49:36,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 205 [2020-10-14 04:49:36,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:49:36,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:49:36,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 04:49:36,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:49:36,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 04:49:36,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:49:36,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:49:36,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:49:36,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:36,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:49:36,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:49:36,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:49:36,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:49:36,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:49:36,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:49:36,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:49:36,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:49:36,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:49:36,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:49:36,611 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:49:36,612 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1967433388] [2020-10-14 04:49:36,613 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:49:36,613 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 04:49:36,614 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106776416] [2020-10-14 04:49:36,614 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 04:49:36,615 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:49:36,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 04:49:36,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:49:36,615 INFO L87 Difference]: Start difference. First operand 38 states and 45 transitions. Second operand 6 states. [2020-10-14 04:49:36,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:49:36,778 INFO L93 Difference]: Finished difference Result 65 states and 76 transitions. [2020-10-14 04:49:36,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 04:49:36,779 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-10-14 04:49:36,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:49:36,780 INFO L225 Difference]: With dead ends: 65 [2020-10-14 04:49:36,780 INFO L226 Difference]: Without dead ends: 63 [2020-10-14 04:49:36,781 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 04:49:36,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-14 04:49:36,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 52. [2020-10-14 04:49:36,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-14 04:49:36,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 62 transitions. [2020-10-14 04:49:36,794 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 62 transitions. Word has length 17 [2020-10-14 04:49:36,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:49:36,794 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 62 transitions. [2020-10-14 04:49:36,794 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 04:49:36,795 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 62 transitions. [2020-10-14 04:49:36,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-14 04:49:36,796 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:49:36,797 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:49:36,797 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 04:49:36,797 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:49:36,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:49:36,797 INFO L82 PathProgramCache]: Analyzing trace with hash 2111834143, now seen corresponding path program 1 times [2020-10-14 04:49:36,798 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:49:36,798 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [165673283] [2020-10-14 04:49:36,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:49:36,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:49:36,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:36,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:37,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:49:37,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 04:49:37,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:49:37,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 428 [2020-10-14 04:49:37,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:49:37,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:49:37,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:49:37,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 04:49:37,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 04:49:37,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:49:37,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:49:37,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:49:37,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:37,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:49:37,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:49:37,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:49:37,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:49:37,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:49:37,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:49:37,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:49:37,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:49:37,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:49:37,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 04:49:37,292 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:49:37,293 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [165673283] [2020-10-14 04:49:37,294 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:49:37,294 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 04:49:37,295 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210823102] [2020-10-14 04:49:37,295 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 04:49:37,296 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:49:37,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 04:49:37,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 04:49:37,297 INFO L87 Difference]: Start difference. First operand 52 states and 62 transitions. Second operand 4 states. [2020-10-14 04:49:37,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:49:37,416 INFO L93 Difference]: Finished difference Result 100 states and 120 transitions. [2020-10-14 04:49:37,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 04:49:37,417 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-10-14 04:49:37,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:49:37,418 INFO L225 Difference]: With dead ends: 100 [2020-10-14 04:49:37,418 INFO L226 Difference]: Without dead ends: 77 [2020-10-14 04:49:37,419 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 04:49:37,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-10-14 04:49:37,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 60. [2020-10-14 04:49:37,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-14 04:49:37,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 72 transitions. [2020-10-14 04:49:37,433 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 72 transitions. Word has length 21 [2020-10-14 04:49:37,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:49:37,433 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 72 transitions. [2020-10-14 04:49:37,433 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 04:49:37,433 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 72 transitions. [2020-10-14 04:49:37,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-14 04:49:37,435 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:49:37,435 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:49:37,435 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 04:49:37,435 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:49:37,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:49:37,436 INFO L82 PathProgramCache]: Analyzing trace with hash -2016892268, now seen corresponding path program 1 times [2020-10-14 04:49:37,436 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:49:37,436 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [426926447] [2020-10-14 04:49:37,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:49:37,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:49:37,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:37,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:49:37,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-14 04:49:37,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:49:37,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 274 [2020-10-14 04:49:37,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:49:37,742 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:49:37,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:49:37,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:49:37,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 04:49:37,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:49:37,813 ERROR L253 erpolLogProxyWrapper]: Interpolant 17 not inductive [2020-10-14 04:49:37,814 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 04:49:37,815 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) [2020-10-14 04:49:37,823 INFO L168 Benchmark]: Toolchain (without parser) took 5284.73 ms. Allocated memory was 147.3 MB in the beginning and 282.1 MB in the end (delta: 134.7 MB). Free memory was 102.2 MB in the beginning and 204.7 MB in the end (delta: -102.5 MB). Peak memory consumption was 107.6 MB. Max. memory is 7.1 GB. [2020-10-14 04:49:37,832 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 147.3 MB. Free memory was 121.9 MB in the beginning and 121.4 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. [2020-10-14 04:49:37,833 INFO L168 Benchmark]: CACSL2BoogieTranslator took 632.16 ms. Allocated memory was 147.3 MB in the beginning and 203.4 MB in the end (delta: 56.1 MB). Free memory was 101.7 MB in the beginning and 169.9 MB in the end (delta: -68.2 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. [2020-10-14 04:49:37,836 INFO L168 Benchmark]: Boogie Preprocessor took 69.55 ms. Allocated memory is still 203.4 MB. Free memory was 169.9 MB in the beginning and 167.1 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. [2020-10-14 04:49:37,836 INFO L168 Benchmark]: RCFGBuilder took 573.64 ms. Allocated memory is still 203.4 MB. Free memory was 167.1 MB in the beginning and 121.3 MB in the end (delta: 45.7 MB). Peak memory consumption was 45.7 MB. Max. memory is 7.1 GB. [2020-10-14 04:49:37,838 INFO L168 Benchmark]: TraceAbstraction took 4004.39 ms. Allocated memory was 203.4 MB in the beginning and 282.1 MB in the end (delta: 78.6 MB). Free memory was 121.3 MB in the beginning and 204.7 MB in the end (delta: -83.3 MB). Peak memory consumption was 70.7 MB. Max. memory is 7.1 GB. [2020-10-14 04:49:37,846 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 147.3 MB. Free memory was 121.9 MB in the beginning and 121.4 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 632.16 ms. Allocated memory was 147.3 MB in the beginning and 203.4 MB in the end (delta: 56.1 MB). Free memory was 101.7 MB in the beginning and 169.9 MB in the end (delta: -68.2 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 69.55 ms. Allocated memory is still 203.4 MB. Free memory was 169.9 MB in the beginning and 167.1 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 573.64 ms. Allocated memory is still 203.4 MB. Free memory was 167.1 MB in the beginning and 121.3 MB in the end (delta: 45.7 MB). Peak memory consumption was 45.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4004.39 ms. Allocated memory was 203.4 MB in the beginning and 282.1 MB in the end (delta: 78.6 MB). Free memory was 121.3 MB in the beginning and 204.7 MB in the end (delta: -83.3 MB). Peak memory consumption was 70.7 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...