/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=BIGGEST --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/array-programs/partial_mod_count_3.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 10:24:42,101 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 10:24:42,104 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 10:24:42,133 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 10:24:42,133 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 10:24:42,137 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 10:24:42,139 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 10:24:42,141 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 10:24:42,143 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 10:24:42,144 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 10:24:42,145 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 10:24:42,147 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 10:24:42,147 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 10:24:42,148 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 10:24:42,149 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 10:24:42,151 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 10:24:42,152 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 10:24:42,153 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 10:24:42,155 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 10:24:42,157 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 10:24:42,159 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 10:24:42,160 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 10:24:42,161 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 10:24:42,162 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 10:24:42,165 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 10:24:42,166 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 10:24:42,166 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 10:24:42,167 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 10:24:42,167 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 10:24:42,169 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 10:24:42,169 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 10:24:42,170 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 10:24:42,171 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 10:24:42,172 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 10:24:42,173 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 10:24:42,173 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 10:24:42,174 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 10:24:42,174 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 10:24:42,174 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 10:24:42,175 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 10:24:42,176 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 10:24:42,177 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 [2020-10-12 10:24:42,202 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 10:24:42,204 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 10:24:42,206 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 10:24:42,206 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 10:24:42,207 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 10:24:42,207 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 10:24:42,210 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 10:24:42,210 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 10:24:42,211 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 10:24:42,211 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 10:24:42,211 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 10:24:42,211 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 10:24:42,211 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 10:24:42,212 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 10:24:42,212 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 10:24:42,212 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 10:24:42,212 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 10:24:42,212 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 10:24:42,213 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 10:24:42,213 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 10:24:42,215 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 10:24:42,215 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 10:24:42,216 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 10:24:42,216 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 10:24:42,216 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 10:24:42,216 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 10:24:42,216 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 10:24:42,217 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 10:24:42,217 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 10:24:42,217 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 10:24:42,612 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 10:24:42,639 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 10:24:42,644 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 10:24:42,646 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 10:24:42,650 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 10:24:42,652 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-programs/partial_mod_count_3.c [2020-10-12 10:24:42,722 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cd9af6e92/9b8c64b1786a4c1a939fdc2a3b47fd35/FLAG73ed6aa7e [2020-10-12 10:24:43,256 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 10:24:43,257 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-programs/partial_mod_count_3.c [2020-10-12 10:24:43,265 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cd9af6e92/9b8c64b1786a4c1a939fdc2a3b47fd35/FLAG73ed6aa7e [2020-10-12 10:24:43,572 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cd9af6e92/9b8c64b1786a4c1a939fdc2a3b47fd35 [2020-10-12 10:24:43,587 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 10:24:43,589 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 10:24:43,592 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 10:24:43,592 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 10:24:43,597 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 10:24:43,598 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 10:24:43" (1/1) ... [2020-10-12 10:24:43,603 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4717b3ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:24:43, skipping insertion in model container [2020-10-12 10:24:43,603 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 10:24:43" (1/1) ... [2020-10-12 10:24:43,613 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 10:24:43,636 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 10:24:43,886 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 10:24:43,891 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 10:24:43,920 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 10:24:43,944 INFO L208 MainTranslator]: Completed translation [2020-10-12 10:24:43,945 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:24:43 WrapperNode [2020-10-12 10:24:43,945 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 10:24:43,947 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 10:24:43,947 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 10:24:43,947 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 10:24:44,135 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:24:43" (1/1) ... [2020-10-12 10:24:44,136 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:24:43" (1/1) ... [2020-10-12 10:24:44,153 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:24:43" (1/1) ... [2020-10-12 10:24:44,153 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:24:43" (1/1) ... [2020-10-12 10:24:44,165 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:24:43" (1/1) ... [2020-10-12 10:24:44,180 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:24:43" (1/1) ... [2020-10-12 10:24:44,182 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:24:43" (1/1) ... [2020-10-12 10:24:44,186 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 10:24:44,187 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 10:24:44,188 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 10:24:44,188 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 10:24:44,189 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:24:43" (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 [2020-10-12 10:24:44,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 10:24:44,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 10:24:44,263 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-12 10:24:44,263 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 10:24:44,264 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 10:24:44,264 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-12 10:24:44,264 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 10:24:44,264 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-12 10:24:44,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-12 10:24:44,265 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-12 10:24:44,265 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-12 10:24:44,265 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 10:24:44,265 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 10:24:44,562 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 10:24:44,563 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-12 10:24:44,567 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 10:24:44 BoogieIcfgContainer [2020-10-12 10:24:44,568 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 10:24:44,569 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 10:24:44,569 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 10:24:44,573 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 10:24:44,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 10:24:43" (1/3) ... [2020-10-12 10:24:44,576 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62174832 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 10:24:44, skipping insertion in model container [2020-10-12 10:24:44,576 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:24:43" (2/3) ... [2020-10-12 10:24:44,576 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62174832 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 10:24:44, skipping insertion in model container [2020-10-12 10:24:44,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 10:24:44" (3/3) ... [2020-10-12 10:24:44,579 INFO L109 eAbstractionObserver]: Analyzing ICFG partial_mod_count_3.c [2020-10-12 10:24:44,592 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 10:24:44,601 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 10:24:44,618 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 10:24:44,653 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 10:24:44,653 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 10:24:44,653 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 10:24:44,654 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 10:24:44,654 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 10:24:44,655 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 10:24:44,655 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 10:24:44,655 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 10:24:44,687 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-10-12 10:24:44,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-12 10:24:44,695 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:24:44,697 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:24:44,698 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:24:44,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:24:44,707 INFO L82 PathProgramCache]: Analyzing trace with hash 547567586, now seen corresponding path program 1 times [2020-10-12 10:24:44,724 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:24:44,724 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [623662256] [2020-10-12 10:24:44,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:24:44,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:24:44,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:24:45,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:24:45,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:24:45,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:24:45,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 10:24:45,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 10:24:45,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 819 [2020-10-12 10:24:45,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:24:45,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 10:24:45,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 10:24:45,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 10:24:45,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-12 10:24:45,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:24:45,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:24:45,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:24:45,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:24:45,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:24:45,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:24:45,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 10:24:45,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:24:45,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:24:45,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:24:45,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:24:45,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:24:45,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 10:24:45,926 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [623662256] [2020-10-12 10:24:45,931 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 10:24:45,932 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-12 10:24:45,933 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658912085] [2020-10-12 10:24:45,940 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 10:24:45,941 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:24:45,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 10:24:45,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-12 10:24:45,962 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 9 states. [2020-10-12 10:24:46,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:24:46,367 INFO L93 Difference]: Finished difference Result 65 states and 89 transitions. [2020-10-12 10:24:46,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 10:24:46,370 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 14 [2020-10-12 10:24:46,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:24:46,382 INFO L225 Difference]: With dead ends: 65 [2020-10-12 10:24:46,383 INFO L226 Difference]: Without dead ends: 35 [2020-10-12 10:24:46,389 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-10-12 10:24:46,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-12 10:24:46,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 32. [2020-10-12 10:24:46,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-12 10:24:46,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2020-10-12 10:24:46,448 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 14 [2020-10-12 10:24:46,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:24:46,449 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2020-10-12 10:24:46,449 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 10:24:46,449 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2020-10-12 10:24:46,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-12 10:24:46,452 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:24:46,452 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:24:46,453 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 10:24:46,453 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:24:46,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:24:46,453 INFO L82 PathProgramCache]: Analyzing trace with hash -1588214163, now seen corresponding path program 1 times [2020-10-12 10:24:46,454 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:24:46,454 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1011705121] [2020-10-12 10:24:46,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:24:46,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:24:46,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:24:46,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:24:46,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:24:46,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:24:47,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:24:47,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-12 10:24:47,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 10:24:47,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 538 [2020-10-12 10:24:47,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:24:47,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 10:24:47,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 10:24:47,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 10:24:47,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:24:47,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:24:47,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:24:47,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:24:47,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:24:47,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:24:47,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:24:47,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 10:24:47,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:24:47,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:24:47,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:24:47,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 10:24:47,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:24:47,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-12 10:24:47,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:24:47,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:24:47,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:24:47,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:24:47,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:24:47,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 10:24:47,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:24:47,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:24:47,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:24:47,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:24:47,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:24:47,152 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 10:24:47,153 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1011705121] [2020-10-12 10:24:47,153 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:24:47,153 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 10:24:47,154 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213700396] [2020-10-12 10:24:47,156 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 10:24:47,156 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:24:47,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 10:24:47,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-12 10:24:47,157 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand 9 states. [2020-10-12 10:24:47,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:24:47,489 INFO L93 Difference]: Finished difference Result 42 states and 49 transitions. [2020-10-12 10:24:47,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 10:24:47,490 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2020-10-12 10:24:47,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:24:47,492 INFO L225 Difference]: With dead ends: 42 [2020-10-12 10:24:47,492 INFO L226 Difference]: Without dead ends: 40 [2020-10-12 10:24:47,494 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2020-10-12 10:24:47,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-12 10:24:47,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-10-12 10:24:47,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-12 10:24:47,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 47 transitions. [2020-10-12 10:24:47,507 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 47 transitions. Word has length 22 [2020-10-12 10:24:47,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:24:47,510 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 47 transitions. [2020-10-12 10:24:47,510 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 10:24:47,511 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 47 transitions. [2020-10-12 10:24:47,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-12 10:24:47,512 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:24:47,513 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:24:47,513 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 10:24:47,514 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:24:47,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:24:47,514 INFO L82 PathProgramCache]: Analyzing trace with hash 2013733517, now seen corresponding path program 2 times [2020-10-12 10:24:47,515 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:24:47,515 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [910259003] [2020-10-12 10:24:47,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:24:47,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:24:47,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:24:47,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:24:47,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:24:47,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:24:47,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:24:48,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:24:48,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:24:48,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-12 10:24:48,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 10:24:48,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1146 [2020-10-12 10:24:48,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:24:48,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 10:24:48,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 10:24:48,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 10:24:48,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:24:48,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:24:48,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:24:48,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:24:48,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:24:48,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:24:48,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:24:48,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 10:24:48,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:24:48,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:24:48,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:24:48,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 10:24:48,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:24:48,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-12 10:24:48,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:24:48,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:24:48,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:24:48,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:24:48,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:24:48,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-12 10:24:48,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:24:48,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:24:48,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:24:48,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:24:48,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:24:48,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-12 10:24:48,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:24:48,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:24:48,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:24:48,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:24:48,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:24:48,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 10:24:48,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:24:48,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:24:48,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:24:48,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:24:48,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:24:48,908 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-12 10:24:48,909 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [910259003] [2020-10-12 10:24:48,910 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:24:48,910 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 10:24:48,910 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774131356] [2020-10-12 10:24:48,911 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 10:24:48,912 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:24:48,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 10:24:48,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-12 10:24:48,914 INFO L87 Difference]: Start difference. First operand 40 states and 47 transitions. Second operand 10 states. [2020-10-12 10:24:49,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:24:49,332 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-10-12 10:24:49,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 10:24:49,333 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 30 [2020-10-12 10:24:49,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:24:49,334 INFO L225 Difference]: With dead ends: 50 [2020-10-12 10:24:49,334 INFO L226 Difference]: Without dead ends: 48 [2020-10-12 10:24:49,337 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2020-10-12 10:24:49,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-12 10:24:49,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-10-12 10:24:49,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-12 10:24:49,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 56 transitions. [2020-10-12 10:24:49,368 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 56 transitions. Word has length 30 [2020-10-12 10:24:49,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:24:49,368 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 56 transitions. [2020-10-12 10:24:49,369 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 10:24:49,369 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 56 transitions. [2020-10-12 10:24:49,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-12 10:24:49,373 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:24:49,373 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:24:49,374 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 10:24:49,375 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:24:49,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:24:49,375 INFO L82 PathProgramCache]: Analyzing trace with hash 774528685, now seen corresponding path program 3 times [2020-10-12 10:24:49,376 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:24:49,384 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1981443937] [2020-10-12 10:24:49,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:24:49,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:24:49,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:24:49,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:24:49,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:24:49,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:24:49,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:24:49,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:24:50,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:24:51,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:24:54,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:24:54,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-12 10:24:54,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 10:24:54,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 10:24:54,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:24:54,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 10:24:54,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 10:24:54,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-12 10:24:54,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:24:54,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:24:54,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:24:54,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:24:54,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:24:54,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:24:54,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:24:54,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 10:24:54,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:24:54,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:24:54,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:24:54,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 10:24:54,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:24:54,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-12 10:24:54,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:24:54,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:24:54,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:24:54,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:24:54,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:24:54,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 10:24:54,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:24:54,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:24:54,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:24:54,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:24:54,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:24:54,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-12 10:24:54,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:24:54,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:24:54,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:24:54,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:24:54,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:24:54,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 10:24:54,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:24:54,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:24:54,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:24:54,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:24:54,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:24:54,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-12 10:24:54,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:24:54,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:24:54,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:24:54,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:24:54,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:24:54,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 10:24:54,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:24:54,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:24:54,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:24:54,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:24:54,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:24:54,625 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-12 10:24:54,627 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1981443937] [2020-10-12 10:24:54,628 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:24:54,628 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 10:24:54,629 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078717275] [2020-10-12 10:24:54,630 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 10:24:54,630 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:24:54,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 10:24:54,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-12 10:24:54,632 INFO L87 Difference]: Start difference. First operand 48 states and 56 transitions. Second operand 11 states. [2020-10-12 10:24:55,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:24:55,037 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2020-10-12 10:24:55,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 10:24:55,037 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 38 [2020-10-12 10:24:55,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:24:55,040 INFO L225 Difference]: With dead ends: 58 [2020-10-12 10:24:55,041 INFO L226 Difference]: Without dead ends: 56 [2020-10-12 10:24:55,042 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2020-10-12 10:24:55,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-12 10:24:55,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-10-12 10:24:55,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-12 10:24:55,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 65 transitions. [2020-10-12 10:24:55,067 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 65 transitions. Word has length 38 [2020-10-12 10:24:55,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:24:55,068 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 65 transitions. [2020-10-12 10:24:55,068 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 10:24:55,069 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 65 transitions. [2020-10-12 10:24:55,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-12 10:24:55,072 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:24:55,072 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:24:55,072 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 10:24:55,072 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:24:55,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:24:55,073 INFO L82 PathProgramCache]: Analyzing trace with hash -1545635123, now seen corresponding path program 4 times [2020-10-12 10:24:55,073 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:24:55,074 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1357933910] [2020-10-12 10:24:55,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:24:55,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:24:55,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:24:55,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:24:55,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:24:55,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:24:55,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:24:55,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:24:55,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:24:56,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:25:00,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:25:00,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-12 10:25:00,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 10:25:00,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-12 10:25:00,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:25:00,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 10:25:00,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 10:25:00,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-12 10:25:00,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-12 10:25:00,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:25:00,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:25:00,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:25:00,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:25:00,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:25:00,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:25:00,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:25:00,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:25:00,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:25:00,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:25:00,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:25:00,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:25:00,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-12 10:25:00,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:25:00,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:25:00,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:25:00,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:25:00,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:25:00,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 10:25:00,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:25:00,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:25:00,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:25:00,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:25:00,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:25:00,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-12 10:25:00,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:25:00,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:25:00,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:25:00,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:25:00,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:25:00,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 10:25:00,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 10:25:00,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:25:00,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 10:25:00,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 10:25:00,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:25:00,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:25:00,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-12 10:25:00,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:25:00,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:25:00,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:25:00,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:25:00,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:25:00,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 10:25:00,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-12 10:25:00,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:25:00,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 10:25:00,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 10:25:00,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:25:00,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:25:00,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-12 10:25:00,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:25:00,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:25:00,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:25:00,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:25:00,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:25:00,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 10:25:00,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:25:00,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 10:25:00,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 10:25:00,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:25:00,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:25:00,424 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 47 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-12 10:25:00,425 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1357933910] [2020-10-12 10:25:00,425 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:25:00,425 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 10:25:00,426 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975956672] [2020-10-12 10:25:00,429 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 10:25:00,429 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:25:00,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 10:25:00,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-12 10:25:00,430 INFO L87 Difference]: Start difference. First operand 56 states and 65 transitions. Second operand 11 states. [2020-10-12 10:25:00,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:25:00,728 INFO L93 Difference]: Finished difference Result 108 states and 130 transitions. [2020-10-12 10:25:00,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 10:25:00,729 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 46 [2020-10-12 10:25:00,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:25:00,731 INFO L225 Difference]: With dead ends: 108 [2020-10-12 10:25:00,733 INFO L226 Difference]: Without dead ends: 59 [2020-10-12 10:25:00,735 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2020-10-12 10:25:00,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-12 10:25:00,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 58. [2020-10-12 10:25:00,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-12 10:25:00,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 67 transitions. [2020-10-12 10:25:00,751 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 67 transitions. Word has length 46 [2020-10-12 10:25:00,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:25:00,753 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 67 transitions. [2020-10-12 10:25:00,753 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 10:25:00,753 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 67 transitions. [2020-10-12 10:25:00,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-12 10:25:00,759 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:25:00,759 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:25:00,759 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 10:25:00,760 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:25:00,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:25:00,760 INFO L82 PathProgramCache]: Analyzing trace with hash 1385346504, now seen corresponding path program 1 times [2020-10-12 10:25:00,760 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:25:00,761 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [840386658] [2020-10-12 10:25:00,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:25:00,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:25:00,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:25:00,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:25:00,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:25:00,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:25:00,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:25:00,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:25:01,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:25:01,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:25:01,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:25:01,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:25:01,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:25:05,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:25:05,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-12 10:25:05,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 10:25:05,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 10:25:05,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:25:05,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 10:25:05,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 10:25:05,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-12 10:25:05,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 10:25:06,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:25:06,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:25:06,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:25:06,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:25:06,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:25:06,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:25:06,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 10:25:06,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:25:06,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:25:06,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:25:06,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:25:06,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:25:06,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-12 10:25:06,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:25:06,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:25:06,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:25:06,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:25:06,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:25:06,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 10:25:06,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:25:06,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:25:06,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:25:06,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:25:06,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:25:06,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-12 10:25:06,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:25:06,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:25:06,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:25:06,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:25:06,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:25:06,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 10:25:06,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:25:06,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:25:06,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:25:06,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:25:06,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:25:06,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 10:25:06,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:25:06,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:25:06,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:25:06,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:25:06,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:25:06,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 10:25:06,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-12 10:25:06,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:25:06,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 10:25:06,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 10:25:06,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:25:06,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:25:06,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-12 10:25:06,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:25:06,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:25:06,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:25:06,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:25:06,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:25:06,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 10:25:06,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:25:06,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 10:25:06,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 10:25:06,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:25:06,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:25:06,164 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 48 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-12 10:25:06,164 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [840386658] [2020-10-12 10:25:06,165 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:25:06,166 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-12 10:25:06,166 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146082910] [2020-10-12 10:25:06,167 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 10:25:06,167 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:25:06,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 10:25:06,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-10-12 10:25:06,168 INFO L87 Difference]: Start difference. First operand 58 states and 67 transitions. Second operand 12 states. [2020-10-12 10:25:06,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:25:06,715 INFO L93 Difference]: Finished difference Result 109 states and 133 transitions. [2020-10-12 10:25:06,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 10:25:06,716 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 49 [2020-10-12 10:25:06,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:25:06,718 INFO L225 Difference]: With dead ends: 109 [2020-10-12 10:25:06,721 INFO L226 Difference]: Without dead ends: 62 [2020-10-12 10:25:06,722 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2020-10-12 10:25:06,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-12 10:25:06,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2020-10-12 10:25:06,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-12 10:25:06,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 70 transitions. [2020-10-12 10:25:06,744 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 70 transitions. Word has length 49 [2020-10-12 10:25:06,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:25:06,745 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 70 transitions. [2020-10-12 10:25:06,745 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 10:25:06,745 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 70 transitions. [2020-10-12 10:25:06,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-12 10:25:06,752 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:25:06,753 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:25:06,753 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 10:25:06,754 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:25:06,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:25:06,754 INFO L82 PathProgramCache]: Analyzing trace with hash 1573868781, now seen corresponding path program 2 times [2020-10-12 10:25:06,755 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:25:06,755 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [554659672] [2020-10-12 10:25:06,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:25:06,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:25:06,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:25:06,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:25:06,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:25:07,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:25:07,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:25:07,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:25:07,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:25:07,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:25:07,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:25:08,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:25:08,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:25:10,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:25:10,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:25:10,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:25:11,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:25:11,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:25:11,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:25:11,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-12 10:25:11,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-12 10:25:11,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-12 10:25:11,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:25:11,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 10:25:11,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 10:25:11,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-12 10:25:11,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:25:12,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:25:12,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:25:12,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:25:12,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:25:12,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:25:12,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:25:12,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:25:12,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:25:12,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:25:12,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:25:12,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:25:12,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:25:12,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-12 10:25:12,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:25:12,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:25:12,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:25:12,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:25:12,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:25:12,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 10:25:12,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:25:12,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:25:12,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:25:12,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:25:12,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:25:12,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-12 10:25:12,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:25:12,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:25:12,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:25:12,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:25:12,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:25:12,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-12 10:25:12,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:25:12,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:25:12,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:25:12,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:25:12,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:25:12,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-12 10:25:12,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:25:12,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:25:12,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:25:12,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:25:12,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:25:12,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 10:25:12,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:25:12,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:25:12,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:25:12,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:25:12,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:25:12,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-12 10:25:12,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:25:12,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:25:12,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:25:12,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:25:12,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:25:12,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:25:12,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:25:12,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:25:12,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:25:12,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:25:12,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:25:12,375 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 40 proven. 8 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-10-12 10:25:12,376 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [554659672] [2020-10-12 10:25:12,377 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:25:12,377 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 10:25:12,378 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715560676] [2020-10-12 10:25:12,379 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 10:25:12,380 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:25:12,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 10:25:12,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-10-12 10:25:12,382 INFO L87 Difference]: Start difference. First operand 61 states and 70 transitions. Second operand 13 states. [2020-10-12 10:25:13,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:25:13,501 INFO L93 Difference]: Finished difference Result 171 states and 218 transitions. [2020-10-12 10:25:13,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 10:25:13,502 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 52 [2020-10-12 10:25:13,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:25:13,505 INFO L225 Difference]: With dead ends: 171 [2020-10-12 10:25:13,505 INFO L226 Difference]: Without dead ends: 82 [2020-10-12 10:25:13,510 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=112, Invalid=350, Unknown=0, NotChecked=0, Total=462 [2020-10-12 10:25:13,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-12 10:25:13,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 63. [2020-10-12 10:25:13,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-12 10:25:13,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 72 transitions. [2020-10-12 10:25:13,528 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 72 transitions. Word has length 52 [2020-10-12 10:25:13,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:25:13,528 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 72 transitions. [2020-10-12 10:25:13,528 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 10:25:13,528 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 72 transitions. [2020-10-12 10:25:13,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-12 10:25:13,530 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:25:13,530 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:25:13,530 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 10:25:13,531 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:25:13,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:25:13,531 INFO L82 PathProgramCache]: Analyzing trace with hash -224346774, now seen corresponding path program 1 times [2020-10-12 10:25:13,531 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:25:13,532 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1823626964] [2020-10-12 10:25:13,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:25:13,548 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-12 10:25:13,548 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-10-12 10:25:13,548 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-12 10:25:13,555 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 10:25:13,585 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-10-12 10:25:13,586 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 10:25:13 BoogieIcfgContainer [2020-10-12 10:25:13,586 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-12 10:25:13,590 INFO L168 Benchmark]: Toolchain (without parser) took 29999.35 ms. Allocated memory was 136.3 MB in the beginning and 440.9 MB in the end (delta: 304.6 MB). Free memory was 99.5 MB in the beginning and 174.0 MB in the end (delta: -74.5 MB). Peak memory consumption was 230.1 MB. Max. memory is 7.1 GB. [2020-10-12 10:25:13,595 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 136.3 MB. Free memory was 117.8 MB in the beginning and 117.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-12 10:25:13,596 INFO L168 Benchmark]: CACSL2BoogieTranslator took 354.14 ms. Allocated memory is still 136.3 MB. Free memory was 99.3 MB in the beginning and 88.9 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-10-12 10:25:13,597 INFO L168 Benchmark]: Boogie Preprocessor took 240.01 ms. Allocated memory was 136.3 MB in the beginning and 203.9 MB in the end (delta: 67.6 MB). Free memory was 88.9 MB in the beginning and 181.2 MB in the end (delta: -92.3 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. [2020-10-12 10:25:13,598 INFO L168 Benchmark]: RCFGBuilder took 380.25 ms. Allocated memory is still 203.9 MB. Free memory was 181.2 MB in the beginning and 166.3 MB in the end (delta: 14.8 MB). Peak memory consumption was 14.8 MB. Max. memory is 7.1 GB. [2020-10-12 10:25:13,601 INFO L168 Benchmark]: TraceAbstraction took 29016.89 ms. Allocated memory was 203.9 MB in the beginning and 440.9 MB in the end (delta: 237.0 MB). Free memory was 165.6 MB in the beginning and 174.0 MB in the end (delta: -8.3 MB). Peak memory consumption was 228.6 MB. Max. memory is 7.1 GB. [2020-10-12 10:25:13,613 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 136.3 MB. Free memory was 117.8 MB in the beginning and 117.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 354.14 ms. Allocated memory is still 136.3 MB. Free memory was 99.3 MB in the beginning and 88.9 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 240.01 ms. Allocated memory was 136.3 MB in the beginning and 203.9 MB in the end (delta: 67.6 MB). Free memory was 88.9 MB in the beginning and 181.2 MB in the end (delta: -92.3 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 380.25 ms. Allocated memory is still 203.9 MB. Free memory was 181.2 MB in the beginning and 166.3 MB in the end (delta: 14.8 MB). Peak memory consumption was 14.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 29016.89 ms. Allocated memory was 203.9 MB in the beginning and 440.9 MB in the end (delta: 237.0 MB). Free memory was 165.6 MB in the beginning and 174.0 MB in the end (delta: -8.3 MB). Peak memory consumption was 228.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 2]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L4] int N = 1000000; [L6] int i,j=0,a[N]; [L7] unsigned int R=3; [L8] i=0 [L8] COND TRUE iN/2) [L8] i++ [L8] COND TRUE iN/2) [L8] i++ [L8] COND TRUE iN/2 [L11] a[i]=i%R [L8] i++ [L8] COND FALSE !(i