/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-examples/standard_running-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 10:03:12,084 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 10:03:12,088 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 10:03:12,128 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 10:03:12,129 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 10:03:12,137 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 10:03:12,139 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 10:03:12,143 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 10:03:12,145 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 10:03:12,149 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 10:03:12,150 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 10:03:12,150 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 10:03:12,151 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 10:03:12,154 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 10:03:12,156 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 10:03:12,158 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 10:03:12,159 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 10:03:12,160 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 10:03:12,162 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 10:03:12,169 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 10:03:12,172 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 10:03:12,173 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 10:03:12,173 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 10:03:12,174 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 10:03:12,186 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 10:03:12,187 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 10:03:12,187 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 10:03:12,188 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 10:03:12,188 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 10:03:12,189 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 10:03:12,189 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 10:03:12,190 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 10:03:12,190 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 10:03:12,191 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 10:03:12,192 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 10:03:12,192 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 10:03:12,193 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 10:03:12,193 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 10:03:12,193 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 10:03:12,194 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 10:03:12,195 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 10:03:12,195 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 10:03:12,217 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 10:03:12,217 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 10:03:12,218 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 10:03:12,218 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 10:03:12,218 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 10:03:12,219 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 10:03:12,219 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 10:03:12,219 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 10:03:12,219 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 10:03:12,219 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 10:03:12,220 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 10:03:12,220 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 10:03:12,220 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 10:03:12,220 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 10:03:12,220 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 10:03:12,221 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 10:03:12,221 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 10:03:12,221 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 10:03:12,221 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 10:03:12,221 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 10:03:12,222 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 10:03:12,222 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 10:03:12,222 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 10:03:12,222 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 10:03:12,223 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 10:03:12,223 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 10:03:12,223 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 10:03:12,223 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 10:03:12,223 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 10:03:12,224 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 10:03:12,544 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 10:03:12,559 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 10:03:12,562 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 10:03:12,563 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 10:03:12,564 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 10:03:12,564 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_running-2.i [2020-10-12 10:03:12,628 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1b8d1c92d/5ac000821b534bf3b1c3369bc4a4d220/FLAGbfde07c52 [2020-10-12 10:03:13,089 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 10:03:13,090 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-examples/standard_running-2.i [2020-10-12 10:03:13,098 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1b8d1c92d/5ac000821b534bf3b1c3369bc4a4d220/FLAGbfde07c52 [2020-10-12 10:03:13,452 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1b8d1c92d/5ac000821b534bf3b1c3369bc4a4d220 [2020-10-12 10:03:13,460 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 10:03:13,462 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 10:03:13,464 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 10:03:13,464 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 10:03:13,468 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 10:03:13,469 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 10:03:13" (1/1) ... [2020-10-12 10:03:13,473 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@488a3702 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:03:13, skipping insertion in model container [2020-10-12 10:03:13,473 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 10:03:13" (1/1) ... [2020-10-12 10:03:13,482 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 10:03:13,502 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 10:03:13,677 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 10:03:13,682 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 10:03:13,706 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 10:03:13,724 INFO L208 MainTranslator]: Completed translation [2020-10-12 10:03:13,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:03:13 WrapperNode [2020-10-12 10:03:13,725 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 10:03:13,726 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 10:03:13,726 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 10:03:13,726 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 10:03:13,822 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:03:13" (1/1) ... [2020-10-12 10:03:13,824 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:03:13" (1/1) ... [2020-10-12 10:03:13,836 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:03:13" (1/1) ... [2020-10-12 10:03:13,836 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:03:13" (1/1) ... [2020-10-12 10:03:13,856 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:03:13" (1/1) ... [2020-10-12 10:03:13,865 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:03:13" (1/1) ... [2020-10-12 10:03:13,873 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:03:13" (1/1) ... [2020-10-12 10:03:13,877 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 10:03:13,877 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 10:03:13,877 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 10:03:13,878 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 10:03:13,878 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:03:13" (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 10:03:13,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 10:03:13,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 10:03:13,936 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-12 10:03:13,936 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 10:03:13,937 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 10:03:13,937 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-12 10:03:13,937 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 10:03:13,937 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 10:03:13,937 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-12 10:03:13,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-12 10:03:13,937 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-12 10:03:13,938 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-12 10:03:13,938 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 10:03:13,938 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 10:03:14,181 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 10:03:14,181 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-12 10:03:14,185 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 10:03:14 BoogieIcfgContainer [2020-10-12 10:03:14,185 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 10:03:14,187 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 10:03:14,187 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 10:03:14,190 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 10:03:14,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 10:03:13" (1/3) ... [2020-10-12 10:03:14,192 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@333337e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 10:03:14, skipping insertion in model container [2020-10-12 10:03:14,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:03:13" (2/3) ... [2020-10-12 10:03:14,192 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@333337e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 10:03:14, skipping insertion in model container [2020-10-12 10:03:14,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 10:03:14" (3/3) ... [2020-10-12 10:03:14,194 INFO L109 eAbstractionObserver]: Analyzing ICFG standard_running-2.i [2020-10-12 10:03:14,206 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 10:03:14,213 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 10:03:14,229 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 10:03:14,263 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 10:03:14,263 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 10:03:14,263 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 10:03:14,264 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 10:03:14,264 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 10:03:14,264 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 10:03:14,264 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 10:03:14,264 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 10:03:14,288 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-10-12 10:03:14,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-12 10:03:14,297 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:03:14,299 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:03:14,299 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:03:14,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:03:14,309 INFO L82 PathProgramCache]: Analyzing trace with hash -766370701, now seen corresponding path program 1 times [2020-10-12 10:03:14,321 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:03:14,321 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1822224808] [2020-10-12 10:03:14,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:03:14,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:14,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:14,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:14,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:14,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:14,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:14,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-12 10:03:14,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 10:03:14,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 303 [2020-10-12 10:03:14,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:14,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 10:03:14,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 10:03:14,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 10:03:14,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-12 10:03:14,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:03:14,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:14,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:14,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:14,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:03:14,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:03:14,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 10:03:14,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:14,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:03:14,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:03:14,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:03:14,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:03:14,892 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 10:03:14,893 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1822224808] [2020-10-12 10:03:14,895 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 10:03:14,896 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 10:03:14,897 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258176155] [2020-10-12 10:03:14,903 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 10:03:14,903 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:03:14,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 10:03:14,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-12 10:03:14,922 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 6 states. [2020-10-12 10:03:15,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:03:15,127 INFO L93 Difference]: Finished difference Result 71 states and 100 transitions. [2020-10-12 10:03:15,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 10:03:15,130 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-12 10:03:15,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:03:15,139 INFO L225 Difference]: With dead ends: 71 [2020-10-12 10:03:15,140 INFO L226 Difference]: Without dead ends: 32 [2020-10-12 10:03:15,144 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-12 10:03:15,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-12 10:03:15,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-10-12 10:03:15,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-12 10:03:15,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 43 transitions. [2020-10-12 10:03:15,190 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 43 transitions. Word has length 15 [2020-10-12 10:03:15,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:03:15,191 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 43 transitions. [2020-10-12 10:03:15,191 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 10:03:15,191 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 43 transitions. [2020-10-12 10:03:15,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-12 10:03:15,192 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:03:15,193 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:03:15,193 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 10:03:15,194 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:03:15,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:03:15,194 INFO L82 PathProgramCache]: Analyzing trace with hash 1752606401, now seen corresponding path program 1 times [2020-10-12 10:03:15,195 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:03:15,195 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [173943126] [2020-10-12 10:03:15,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:03:15,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:15,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:15,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:15,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:15,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:15,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:17,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:17,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 10:03:17,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 10:03:17,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1820 [2020-10-12 10:03:17,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:17,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 10:03:17,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-12 10:03:17,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 10:03:17,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:03:17,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:03:17,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:17,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:17,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:17,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:03:17,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:03:17,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:03:17,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:17,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:03:17,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:03:17,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:03:17,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:03:17,117 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 10:03:17,118 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [173943126] [2020-10-12 10:03:17,118 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 10:03:17,118 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 10:03:17,119 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091975552] [2020-10-12 10:03:17,121 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 10:03:17,122 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:03:17,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 10:03:17,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-12 10:03:17,124 INFO L87 Difference]: Start difference. First operand 32 states and 43 transitions. Second operand 6 states. [2020-10-12 10:03:17,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:03:17,264 INFO L93 Difference]: Finished difference Result 51 states and 70 transitions. [2020-10-12 10:03:17,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 10:03:17,265 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2020-10-12 10:03:17,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:03:17,269 INFO L225 Difference]: With dead ends: 51 [2020-10-12 10:03:17,269 INFO L226 Difference]: Without dead ends: 39 [2020-10-12 10:03:17,270 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-12 10:03:17,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-12 10:03:17,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2020-10-12 10:03:17,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-12 10:03:17,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 48 transitions. [2020-10-12 10:03:17,280 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 48 transitions. Word has length 22 [2020-10-12 10:03:17,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:03:17,281 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 48 transitions. [2020-10-12 10:03:17,281 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 10:03:17,281 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 48 transitions. [2020-10-12 10:03:17,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-12 10:03:17,282 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:03:17,282 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:03:17,282 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 10:03:17,283 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:03:17,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:03:17,283 INFO L82 PathProgramCache]: Analyzing trace with hash -767353533, now seen corresponding path program 1 times [2020-10-12 10:03:17,283 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:03:17,284 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1810320880] [2020-10-12 10:03:17,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:03:17,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:17,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:17,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:17,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:17,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:17,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:17,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 10:03:17,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 10:03:17,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 538 [2020-10-12 10:03:17,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:17,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 10:03:17,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 10:03:17,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 10:03:17,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:03:17,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:03:17,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:17,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:17,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:17,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:03:17,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:03:17,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:03:17,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:17,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:03:17,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:03:17,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:03:17,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:03:17,890 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 10:03:17,891 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1810320880] [2020-10-12 10:03:17,891 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 10:03:17,891 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 10:03:17,892 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023611165] [2020-10-12 10:03:17,892 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 10:03:17,892 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:03:17,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 10:03:17,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-12 10:03:17,893 INFO L87 Difference]: Start difference. First operand 36 states and 48 transitions. Second operand 6 states. [2020-10-12 10:03:18,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:03:18,008 INFO L93 Difference]: Finished difference Result 69 states and 94 transitions. [2020-10-12 10:03:18,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 10:03:18,009 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2020-10-12 10:03:18,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:03:18,010 INFO L225 Difference]: With dead ends: 69 [2020-10-12 10:03:18,010 INFO L226 Difference]: Without dead ends: 46 [2020-10-12 10:03:18,011 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-12 10:03:18,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-12 10:03:18,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 40. [2020-10-12 10:03:18,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-12 10:03:18,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 53 transitions. [2020-10-12 10:03:18,019 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 53 transitions. Word has length 22 [2020-10-12 10:03:18,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:03:18,019 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 53 transitions. [2020-10-12 10:03:18,019 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 10:03:18,019 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 53 transitions. [2020-10-12 10:03:18,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-12 10:03:18,020 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:03:18,020 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:03:18,021 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 10:03:18,021 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:03:18,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:03:18,021 INFO L82 PathProgramCache]: Analyzing trace with hash -1576700159, now seen corresponding path program 1 times [2020-10-12 10:03:18,022 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:03:18,022 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1326491136] [2020-10-12 10:03:18,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:03:18,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:18,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:18,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:18,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:18,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:18,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 10:03:18,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 10:03:18,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-12 10:03:18,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:18,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 10:03:18,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 10:03:18,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-12 10:03:18,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:03:18,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:03:18,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:18,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:18,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:18,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:03:18,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:03:18,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:03:18,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:18,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:03:18,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:03:18,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:03:18,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:03:18,218 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 10:03:18,219 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1326491136] [2020-10-12 10:03:18,219 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:03:18,219 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 10:03:18,220 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406574] [2020-10-12 10:03:18,220 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 10:03:18,220 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:03:18,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 10:03:18,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 10:03:18,221 INFO L87 Difference]: Start difference. First operand 40 states and 53 transitions. Second operand 5 states. [2020-10-12 10:03:18,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:03:18,334 INFO L93 Difference]: Finished difference Result 119 states and 166 transitions. [2020-10-12 10:03:18,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 10:03:18,334 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-10-12 10:03:18,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:03:18,336 INFO L225 Difference]: With dead ends: 119 [2020-10-12 10:03:18,336 INFO L226 Difference]: Without dead ends: 87 [2020-10-12 10:03:18,337 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 10:03:18,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-12 10:03:18,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 59. [2020-10-12 10:03:18,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-12 10:03:18,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 78 transitions. [2020-10-12 10:03:18,346 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 78 transitions. Word has length 22 [2020-10-12 10:03:18,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:03:18,347 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 78 transitions. [2020-10-12 10:03:18,347 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 10:03:18,347 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 78 transitions. [2020-10-12 10:03:18,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-12 10:03:18,348 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:03:18,349 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:03:18,349 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 10:03:18,349 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:03:18,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:03:18,350 INFO L82 PathProgramCache]: Analyzing trace with hash -1355439264, now seen corresponding path program 1 times [2020-10-12 10:03:18,350 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:03:18,350 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1132858439] [2020-10-12 10:03:18,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:03:18,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:18,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:18,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:18,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:18,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:18,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:18,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:19,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:20,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:23,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:23,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-12 10:03:23,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 10:03:23,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-12 10:03:23,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:23,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 10:03:23,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 10:03:23,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 10:03:23,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:03:23,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:03:23,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:23,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:23,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:23,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:03:23,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:03:23,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:03:23,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:23,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:03:23,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:03:23,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:03:23,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:03:23,748 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-12 10:03:23,749 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1132858439] [2020-10-12 10:03:23,749 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:03:23,749 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 10:03:23,749 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295881301] [2020-10-12 10:03:23,750 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 10:03:23,750 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:03:23,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 10:03:23,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-10-12 10:03:23,751 INFO L87 Difference]: Start difference. First operand 59 states and 78 transitions. Second operand 11 states. [2020-10-12 10:03:24,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:03:24,316 INFO L93 Difference]: Finished difference Result 178 states and 244 transitions. [2020-10-12 10:03:24,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 10:03:24,316 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 39 [2020-10-12 10:03:24,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:03:24,319 INFO L225 Difference]: With dead ends: 178 [2020-10-12 10:03:24,320 INFO L226 Difference]: Without dead ends: 146 [2020-10-12 10:03:24,321 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2020-10-12 10:03:24,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-10-12 10:03:24,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 83. [2020-10-12 10:03:24,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-12 10:03:24,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 106 transitions. [2020-10-12 10:03:24,335 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 106 transitions. Word has length 39 [2020-10-12 10:03:24,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:03:24,335 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 106 transitions. [2020-10-12 10:03:24,335 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 10:03:24,336 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 106 transitions. [2020-10-12 10:03:24,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-12 10:03:24,339 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:03:24,339 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:03:24,339 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 10:03:24,340 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:03:24,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:03:24,340 INFO L82 PathProgramCache]: Analyzing trace with hash -2013062432, now seen corresponding path program 1 times [2020-10-12 10:03:24,340 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:03:24,341 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1413491371] [2020-10-12 10:03:24,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:03:24,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:24,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:24,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:24,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:24,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:24,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:24,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:27,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:27,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:28,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:29,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:29,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-12 10:03:29,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 10:03:29,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 10:03:29,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:29,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 10:03:29,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-12 10:03:29,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-12 10:03:29,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:03:29,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:03:29,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:29,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:29,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:29,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:03:29,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:03:29,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:03:29,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:29,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:03:29,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:03:29,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:03:29,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:03:29,652 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 10:03:29,652 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1413491371] [2020-10-12 10:03:29,653 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:03:29,653 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-12 10:03:29,653 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078738175] [2020-10-12 10:03:29,654 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 10:03:29,654 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:03:29,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 10:03:29,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-12 10:03:29,655 INFO L87 Difference]: Start difference. First operand 83 states and 106 transitions. Second operand 12 states. [2020-10-12 10:03:30,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:03:30,126 INFO L93 Difference]: Finished difference Result 161 states and 203 transitions. [2020-10-12 10:03:30,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 10:03:30,127 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 39 [2020-10-12 10:03:30,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:03:30,129 INFO L225 Difference]: With dead ends: 161 [2020-10-12 10:03:30,129 INFO L226 Difference]: Without dead ends: 156 [2020-10-12 10:03:30,134 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=92, Invalid=214, Unknown=0, NotChecked=0, Total=306 [2020-10-12 10:03:30,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-10-12 10:03:30,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 138. [2020-10-12 10:03:30,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-10-12 10:03:30,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 178 transitions. [2020-10-12 10:03:30,169 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 178 transitions. Word has length 39 [2020-10-12 10:03:30,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:03:30,170 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 178 transitions. [2020-10-12 10:03:30,170 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 10:03:30,170 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 178 transitions. [2020-10-12 10:03:30,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-12 10:03:30,176 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:03:30,176 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:03:30,176 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 10:03:30,177 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:03:30,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:03:30,177 INFO L82 PathProgramCache]: Analyzing trace with hash -238055070, now seen corresponding path program 1 times [2020-10-12 10:03:30,178 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:03:30,178 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [696188247] [2020-10-12 10:03:30,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:03:30,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:30,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:30,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:30,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:30,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:30,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:31,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:35,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:35,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-12 10:03:35,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 10:03:35,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 10:03:35,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:35,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 10:03:35,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 10:03:35,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 10:03:35,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:03:35,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:03:35,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:35,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:35,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:35,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:03:35,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:03:35,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:03:35,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:35,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:03:35,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:03:35,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:03:35,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:03:35,599 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-12 10:03:35,600 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [696188247] [2020-10-12 10:03:35,600 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:03:35,600 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 10:03:35,602 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293242656] [2020-10-12 10:03:35,602 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 10:03:35,603 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:03:35,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 10:03:35,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-12 10:03:35,604 INFO L87 Difference]: Start difference. First operand 138 states and 178 transitions. Second operand 10 states. [2020-10-12 10:03:36,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:03:36,062 INFO L93 Difference]: Finished difference Result 347 states and 447 transitions. [2020-10-12 10:03:36,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 10:03:36,063 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 39 [2020-10-12 10:03:36,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:03:36,065 INFO L225 Difference]: With dead ends: 347 [2020-10-12 10:03:36,065 INFO L226 Difference]: Without dead ends: 260 [2020-10-12 10:03:36,066 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2020-10-12 10:03:36,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2020-10-12 10:03:36,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 161. [2020-10-12 10:03:36,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-10-12 10:03:36,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 208 transitions. [2020-10-12 10:03:36,098 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 208 transitions. Word has length 39 [2020-10-12 10:03:36,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:03:36,098 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 208 transitions. [2020-10-12 10:03:36,098 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 10:03:36,098 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 208 transitions. [2020-10-12 10:03:36,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-12 10:03:36,106 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:03:36,106 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:03:36,106 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 10:03:36,106 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:03:36,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:03:36,110 INFO L82 PathProgramCache]: Analyzing trace with hash -1529566750, now seen corresponding path program 1 times [2020-10-12 10:03:36,110 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:03:36,111 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [127234759] [2020-10-12 10:03:36,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:03:36,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:36,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:36,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:36,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:36,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:37,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:37,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:41,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:41,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-12 10:03:41,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 10:03:41,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4933 [2020-10-12 10:03:41,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:41,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 10:03:41,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-12 10:03:41,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 10:03:41,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:03:41,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:03:41,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:41,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:41,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:41,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:03:41,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:03:41,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:03:41,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:41,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:03:41,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:03:41,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:03:41,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:03:41,314 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 10:03:41,315 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [127234759] [2020-10-12 10:03:41,315 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:03:41,315 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-12 10:03:41,315 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009834136] [2020-10-12 10:03:41,317 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 10:03:41,317 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:03:41,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 10:03:41,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2020-10-12 10:03:41,318 INFO L87 Difference]: Start difference. First operand 161 states and 208 transitions. Second operand 14 states. [2020-10-12 10:03:42,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:03:42,019 INFO L93 Difference]: Finished difference Result 490 states and 642 transitions. [2020-10-12 10:03:42,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-12 10:03:42,020 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 39 [2020-10-12 10:03:42,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:03:42,022 INFO L225 Difference]: With dead ends: 490 [2020-10-12 10:03:42,023 INFO L226 Difference]: Without dead ends: 340 [2020-10-12 10:03:42,026 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=207, Invalid=723, Unknown=0, NotChecked=0, Total=930 [2020-10-12 10:03:42,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2020-10-12 10:03:42,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 308. [2020-10-12 10:03:42,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 308 states. [2020-10-12 10:03:42,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 402 transitions. [2020-10-12 10:03:42,059 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 402 transitions. Word has length 39 [2020-10-12 10:03:42,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:03:42,059 INFO L479 AbstractCegarLoop]: Abstraction has 308 states and 402 transitions. [2020-10-12 10:03:42,059 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 10:03:42,060 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 402 transitions. [2020-10-12 10:03:42,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-12 10:03:42,068 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:03:42,068 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:03:42,068 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 10:03:42,068 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:03:42,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:03:42,069 INFO L82 PathProgramCache]: Analyzing trace with hash -1640975785, now seen corresponding path program 2 times [2020-10-12 10:03:42,070 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:03:42,070 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [479995230] [2020-10-12 10:03:42,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:03:42,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:42,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:42,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:42,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:42,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:42,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:42,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:42,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:42,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:42,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:44,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:44,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:44,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:44,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:47,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:47,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-12 10:03:47,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 10:03:47,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 10:03:47,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:47,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 10:03:47,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-12 10:03:47,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 10:03:47,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:03:47,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:03:47,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:47,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:47,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:47,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:03:47,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:03:47,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:03:47,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:47,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:03:47,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:03:47,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:03:47,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:03:47,521 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 13 proven. 23 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-12 10:03:47,526 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [479995230] [2020-10-12 10:03:47,527 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:03:47,527 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-12 10:03:47,527 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029255259] [2020-10-12 10:03:47,529 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-12 10:03:47,529 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:03:47,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-12 10:03:47,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2020-10-12 10:03:47,530 INFO L87 Difference]: Start difference. First operand 308 states and 402 transitions. Second operand 16 states. [2020-10-12 10:03:49,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:03:49,046 INFO L93 Difference]: Finished difference Result 759 states and 1002 transitions. [2020-10-12 10:03:49,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-12 10:03:49,046 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 51 [2020-10-12 10:03:49,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:03:49,051 INFO L225 Difference]: With dead ends: 759 [2020-10-12 10:03:49,052 INFO L226 Difference]: Without dead ends: 695 [2020-10-12 10:03:49,053 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 293 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=209, Invalid=1197, Unknown=0, NotChecked=0, Total=1406 [2020-10-12 10:03:49,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2020-10-12 10:03:49,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 416. [2020-10-12 10:03:49,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 416 states. [2020-10-12 10:03:49,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 542 transitions. [2020-10-12 10:03:49,079 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 542 transitions. Word has length 51 [2020-10-12 10:03:49,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:03:49,080 INFO L479 AbstractCegarLoop]: Abstraction has 416 states and 542 transitions. [2020-10-12 10:03:49,080 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-12 10:03:49,080 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 542 transitions. [2020-10-12 10:03:49,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-12 10:03:49,081 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:03:49,082 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:03:49,082 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 10:03:49,082 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:03:49,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:03:49,083 INFO L82 PathProgramCache]: Analyzing trace with hash -523591591, now seen corresponding path program 2 times [2020-10-12 10:03:49,083 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:03:49,083 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1181556111] [2020-10-12 10:03:49,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:03:49,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:49,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:49,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:49,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:49,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:49,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:49,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:49,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:54,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:54,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-12 10:03:54,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 10:03:54,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 10:03:54,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:54,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 10:03:54,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 10:03:54,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-12 10:03:54,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:03:54,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:03:54,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:54,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:54,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:54,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:03:54,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:03:54,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:03:54,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:54,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:03:54,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:03:54,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:03:54,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:03:54,512 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 8 proven. 28 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-12 10:03:54,513 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1181556111] [2020-10-12 10:03:54,513 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:03:54,513 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-12 10:03:54,513 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492627372] [2020-10-12 10:03:54,514 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-12 10:03:54,514 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:03:54,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-12 10:03:54,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2020-10-12 10:03:54,515 INFO L87 Difference]: Start difference. First operand 416 states and 542 transitions. Second operand 17 states. [2020-10-12 10:03:55,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:03:55,864 INFO L93 Difference]: Finished difference Result 985 states and 1298 transitions. [2020-10-12 10:03:55,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-12 10:03:55,865 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 51 [2020-10-12 10:03:55,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:03:55,868 INFO L225 Difference]: With dead ends: 985 [2020-10-12 10:03:55,868 INFO L226 Difference]: Without dead ends: 582 [2020-10-12 10:03:55,870 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 517 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=360, Invalid=1532, Unknown=0, NotChecked=0, Total=1892 [2020-10-12 10:03:55,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2020-10-12 10:03:55,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 509. [2020-10-12 10:03:55,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 509 states. [2020-10-12 10:03:55,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 670 transitions. [2020-10-12 10:03:55,903 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 670 transitions. Word has length 51 [2020-10-12 10:03:55,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:03:55,903 INFO L479 AbstractCegarLoop]: Abstraction has 509 states and 670 transitions. [2020-10-12 10:03:55,903 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-12 10:03:55,903 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 670 transitions. [2020-10-12 10:03:55,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-12 10:03:55,906 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:03:55,906 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:03:55,906 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 10:03:55,906 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:03:55,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:03:55,907 INFO L82 PathProgramCache]: Analyzing trace with hash 111331902, now seen corresponding path program 3 times [2020-10-12 10:03:55,907 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:03:55,907 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2077658928] [2020-10-12 10:03:55,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:03:55,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:55,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:55,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:55,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:55,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:56,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:56,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:56,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:57,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:57,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:57,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:57,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:57,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:57,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:58,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:58,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:58,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:58,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:58,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:59,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:59,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:59,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:00,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:00,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-12 10:04:00,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 21 [2020-10-12 10:04:00,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 10:04:00,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:00,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 10:04:00,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 10:04:00,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-12 10:04:00,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:00,958 ERROR L253 erpolLogProxyWrapper]: Interpolant 26 not inductive [2020-10-12 10:04:00,967 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 10:04:00,968 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: generated interpolants did not pass sanity check at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:219) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:849) at de.uni_freiburg.informatik.ultimate.smtinterpol.muses.MusEnumerationScript.getInterpolants(MusEnumerationScript.java:155) at de.uni_freiburg.informatik.ultimate.smtinterpol.muses.MusEnumerationScript.getInterpolants(MusEnumerationScript.java:256) at de.uni_freiburg.informatik.ultimate.smtinterpol.muses.MusEnumerationScript.getInterpolants(MusEnumerationScript.java:150) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.getInterpolants(ManagedScript.java:191) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:285) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:166) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:326) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:228) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:106) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:508) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:370) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-10-12 10:04:00,981 INFO L168 Benchmark]: Toolchain (without parser) took 47512.81 ms. Allocated memory was 138.4 MB in the beginning and 608.7 MB in the end (delta: 470.3 MB). Free memory was 101.3 MB in the beginning and 148.5 MB in the end (delta: -47.2 MB). Peak memory consumption was 493.3 MB. Max. memory is 7.1 GB. [2020-10-12 10:04:00,983 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-12 10:04:00,983 INFO L168 Benchmark]: CACSL2BoogieTranslator took 261.83 ms. Allocated memory is still 138.4 MB. Free memory was 101.1 MB in the beginning and 91.1 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-10-12 10:04:00,986 INFO L168 Benchmark]: Boogie Preprocessor took 151.39 ms. Allocated memory was 138.4 MB in the beginning and 201.3 MB in the end (delta: 62.9 MB). Free memory was 91.1 MB in the beginning and 178.5 MB in the end (delta: -87.3 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. [2020-10-12 10:04:00,986 INFO L168 Benchmark]: RCFGBuilder took 308.31 ms. Allocated memory is still 201.3 MB. Free memory was 178.5 MB in the beginning and 161.3 MB in the end (delta: 17.2 MB). Peak memory consumption was 17.2 MB. Max. memory is 7.1 GB. [2020-10-12 10:04:00,987 INFO L168 Benchmark]: TraceAbstraction took 46786.19 ms. Allocated memory was 201.3 MB in the beginning and 608.7 MB in the end (delta: 407.4 MB). Free memory was 161.3 MB in the beginning and 148.5 MB in the end (delta: 12.7 MB). Peak memory consumption was 490.3 MB. Max. memory is 7.1 GB. [2020-10-12 10:04:00,994 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 261.83 ms. Allocated memory is still 138.4 MB. Free memory was 101.1 MB in the beginning and 91.1 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 151.39 ms. Allocated memory was 138.4 MB in the beginning and 201.3 MB in the end (delta: 62.9 MB). Free memory was 91.1 MB in the beginning and 178.5 MB in the end (delta: -87.3 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 308.31 ms. Allocated memory is still 201.3 MB. Free memory was 178.5 MB in the beginning and 161.3 MB in the end (delta: 17.2 MB). Peak memory consumption was 17.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 46786.19 ms. Allocated memory was 201.3 MB in the beginning and 608.7 MB in the end (delta: 407.4 MB). Free memory was 161.3 MB in the beginning and 148.5 MB in the end (delta: 12.7 MB). Peak memory consumption was 490.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: generated interpolants did not pass sanity check de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: generated interpolants did not pass sanity check: de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:219) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...