/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label44.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 20:31:55,103 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 20:31:55,107 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 20:31:55,138 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 20:31:55,138 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 20:31:55,140 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 20:31:55,141 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 20:31:55,143 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 20:31:55,145 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 20:31:55,146 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 20:31:55,147 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 20:31:55,149 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 20:31:55,149 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 20:31:55,150 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 20:31:55,152 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 20:31:55,153 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 20:31:55,154 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 20:31:55,155 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 20:31:55,157 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 20:31:55,160 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 20:31:55,161 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 20:31:55,163 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 20:31:55,164 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 20:31:55,165 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 20:31:55,167 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 20:31:55,168 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 20:31:55,168 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 20:31:55,169 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 20:31:55,170 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 20:31:55,171 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 20:31:55,171 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 20:31:55,172 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 20:31:55,173 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 20:31:55,174 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 20:31:55,175 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 20:31:55,176 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 20:31:55,176 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 20:31:55,177 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 20:31:55,177 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 20:31:55,178 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 20:31:55,179 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 20:31:55,180 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 20:31:55,207 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 20:31:55,207 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 20:31:55,209 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 20:31:55,209 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 20:31:55,209 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 20:31:55,209 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 20:31:55,210 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 20:31:55,210 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 20:31:55,210 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 20:31:55,210 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 20:31:55,210 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 20:31:55,211 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 20:31:55,211 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 20:31:55,211 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 20:31:55,211 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 20:31:55,212 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 20:31:55,212 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 20:31:55,212 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 20:31:55,212 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 20:31:55,212 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 20:31:55,213 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 20:31:55,213 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 20:31:55,213 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 20:31:55,213 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 20:31:55,213 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 20:31:55,214 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 20:31:55,214 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 20:31:55,214 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 20:31:55,214 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 20:31:55,215 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; [2020-09-24 20:31:55,694 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 20:31:55,715 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 20:31:55,718 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 20:31:55,720 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 20:31:55,721 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 20:31:55,722 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label44.c [2020-09-24 20:31:55,800 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/de4e64284/097f38024e5f4aeb9156b0282885d75f/FLAG8bd159d16 [2020-09-24 20:31:56,539 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 20:31:56,540 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label44.c [2020-09-24 20:31:56,553 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/de4e64284/097f38024e5f4aeb9156b0282885d75f/FLAG8bd159d16 [2020-09-24 20:31:56,711 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/de4e64284/097f38024e5f4aeb9156b0282885d75f [2020-09-24 20:31:56,726 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 20:31:56,732 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 20:31:56,735 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 20:31:56,736 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 20:31:56,740 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 20:31:56,741 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:31:56" (1/1) ... [2020-09-24 20:31:56,745 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@194bd3d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:31:56, skipping insertion in model container [2020-09-24 20:31:56,745 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:31:56" (1/1) ... [2020-09-24 20:31:56,755 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 20:31:56,815 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 20:31:57,304 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:31:57,311 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 20:31:57,639 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:31:57,661 INFO L208 MainTranslator]: Completed translation [2020-09-24 20:31:57,661 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:31:57 WrapperNode [2020-09-24 20:31:57,662 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 20:31:57,663 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 20:31:57,663 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 20:31:57,663 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 20:31:57,679 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:31:57" (1/1) ... [2020-09-24 20:31:57,680 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:31:57" (1/1) ... [2020-09-24 20:31:57,700 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:31:57" (1/1) ... [2020-09-24 20:31:57,700 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:31:57" (1/1) ... [2020-09-24 20:31:57,752 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:31:57" (1/1) ... [2020-09-24 20:31:57,776 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:31:57" (1/1) ... [2020-09-24 20:31:57,787 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:31:57" (1/1) ... [2020-09-24 20:31:57,799 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 20:31:57,800 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 20:31:57,800 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 20:31:57,800 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 20:31:57,802 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:31:57" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 20:31:57,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 20:31:57,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 20:31:57,896 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 20:31:57,896 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 20:31:57,896 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 20:31:57,897 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 20:31:57,897 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 20:31:57,897 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 20:31:57,897 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 20:31:57,897 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 20:31:57,898 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 20:31:59,141 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 20:31:59,141 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 20:31:59,151 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:31:59 BoogieIcfgContainer [2020-09-24 20:31:59,151 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 20:31:59,154 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 20:31:59,154 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 20:31:59,160 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 20:31:59,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 08:31:56" (1/3) ... [2020-09-24 20:31:59,161 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43ec6d71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:31:59, skipping insertion in model container [2020-09-24 20:31:59,162 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:31:57" (2/3) ... [2020-09-24 20:31:59,162 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43ec6d71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:31:59, skipping insertion in model container [2020-09-24 20:31:59,163 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:31:59" (3/3) ... [2020-09-24 20:31:59,165 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label44.c [2020-09-24 20:31:59,180 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 20:31:59,196 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 20:31:59,223 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 20:31:59,274 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 20:31:59,275 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 20:31:59,275 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 20:31:59,276 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 20:31:59,276 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 20:31:59,276 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 20:31:59,276 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 20:31:59,276 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 20:31:59,321 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-24 20:31:59,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-09-24 20:31:59,341 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:31:59,343 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:31:59,343 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:31:59,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:31:59,352 INFO L82 PathProgramCache]: Analyzing trace with hash 948138895, now seen corresponding path program 1 times [2020-09-24 20:31:59,363 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:31:59,364 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1523682103] [2020-09-24 20:31:59,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:31:59,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:31:59,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:32:00,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:32:00,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:32:00,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:32:00,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:32:01,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:32:02,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:32:02,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:32:04,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:32:04,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-09-24 20:32:04,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 20:32:04,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-24 20:32:04,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:32:04,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-09-24 20:32:04,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 20:32:04,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-24 20:32:04,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 20:32:05,455 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 37 [2020-09-24 20:32:05,706 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 37 [2020-09-24 20:32:05,997 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 43 [2020-09-24 20:32:06,304 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 43 [2020-09-24 20:32:06,513 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 41 [2020-09-24 20:32:06,706 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 41 [2020-09-24 20:32:06,912 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 44 [2020-09-24 20:32:07,095 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 44 [2020-09-24 20:32:07,276 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 44 [2020-09-24 20:32:07,460 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 44 [2020-09-24 20:32:07,719 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 45 [2020-09-24 20:32:07,943 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 44 [2020-09-24 20:32:08,181 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 44 [2020-09-24 20:32:08,404 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 43 [2020-09-24 20:32:08,610 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 41 [2020-09-24 20:32:08,824 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 41 [2020-09-24 20:32:08,994 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 35 [2020-09-24 20:32:09,201 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 33 [2020-09-24 20:32:09,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:32:09,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:32:09,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:32:09,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:32:09,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 20:32:09,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:32:09,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-09-24 20:32:09,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:32:09,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:32:09,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:32:09,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 20:32:09,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:32:10,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:32:10,258 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1523682103] [2020-09-24 20:32:10,260 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:32:10,261 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2020-09-24 20:32:10,262 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452821908] [2020-09-24 20:32:10,268 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-09-24 20:32:10,268 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:32:10,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-09-24 20:32:10,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=343, Invalid=779, Unknown=0, NotChecked=0, Total=1122 [2020-09-24 20:32:10,291 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 34 states. [2020-09-24 20:32:10,923 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-09-24 20:32:11,266 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 93 [2020-09-24 20:32:11,428 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 43 [2020-09-24 20:32:11,739 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 93 [2020-09-24 20:32:12,166 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 99 [2020-09-24 20:32:12,626 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 100 [2020-09-24 20:32:12,994 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 97 [2020-09-24 20:32:13,424 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 96 [2020-09-24 20:32:13,817 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 99 [2020-09-24 20:32:14,345 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 99 [2020-09-24 20:32:14,517 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-09-24 20:32:14,994 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 99 [2020-09-24 20:32:15,175 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 43 [2020-09-24 20:32:15,558 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 99 [2020-09-24 20:32:15,773 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 46 [2020-09-24 20:32:16,164 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 99 [2020-09-24 20:32:16,675 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 99 [2020-09-24 20:32:17,160 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 99 [2020-09-24 20:32:17,347 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-09-24 20:32:17,698 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 85 [2020-09-24 20:32:17,978 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-09-24 20:32:18,420 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 99 [2020-09-24 20:32:18,888 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 92 [2020-09-24 20:32:19,267 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 98 [2020-09-24 20:32:19,978 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 88 [2020-09-24 20:32:20,331 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 98 [2020-09-24 20:32:20,496 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-09-24 20:32:20,958 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 92 [2020-09-24 20:32:21,232 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 85 [2020-09-24 20:32:21,465 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-09-24 20:32:21,811 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 91 [2020-09-24 20:32:22,194 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 90 [2020-09-24 20:32:22,718 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 89 [2020-09-24 20:32:23,065 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 91 [2020-09-24 20:32:23,291 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2020-09-24 20:32:23,649 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 91 [2020-09-24 20:32:23,804 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 35 [2020-09-24 20:32:24,185 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 91 [2020-09-24 20:32:24,486 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 88 [2020-09-24 20:32:24,805 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 84 [2020-09-24 20:32:25,132 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 85 [2020-09-24 20:32:25,521 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 89 [2020-09-24 20:32:25,717 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-09-24 20:32:26,217 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2020-09-24 20:32:26,576 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 91 [2020-09-24 20:32:26,895 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 91 [2020-09-24 20:32:27,221 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 38 [2020-09-24 20:32:27,621 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 91 [2020-09-24 20:32:28,171 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 91 [2020-09-24 20:32:28,697 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 91 [2020-09-24 20:32:28,971 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 83 [2020-09-24 20:32:29,396 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 82 [2020-09-24 20:32:30,252 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 91 [2020-09-24 20:32:30,519 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 79 [2020-09-24 20:32:30,792 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2020-09-24 20:32:31,025 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 72 [2020-09-24 20:32:31,283 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2020-09-24 20:32:31,759 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 89 [2020-09-24 20:32:32,155 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 89 [2020-09-24 20:32:32,667 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 80 [2020-09-24 20:32:32,896 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 41 [2020-09-24 20:32:34,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:32:34,836 INFO L93 Difference]: Finished difference Result 1830 states and 2587 transitions. [2020-09-24 20:32:34,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2020-09-24 20:32:34,839 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 112 [2020-09-24 20:32:34,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:32:34,871 INFO L225 Difference]: With dead ends: 1830 [2020-09-24 20:32:34,871 INFO L226 Difference]: Without dead ends: 1217 [2020-09-24 20:32:34,886 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3774 ImplicationChecksByTransitivity, 22.4s TimeCoverageRelationStatistics Valid=3387, Invalid=8385, Unknown=0, NotChecked=0, Total=11772 [2020-09-24 20:32:34,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1217 states. [2020-09-24 20:32:35,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1217 to 1053. [2020-09-24 20:32:35,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1053 states. [2020-09-24 20:32:35,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1053 states to 1053 states and 1277 transitions. [2020-09-24 20:32:35,035 INFO L78 Accepts]: Start accepts. Automaton has 1053 states and 1277 transitions. Word has length 112 [2020-09-24 20:32:35,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:32:35,037 INFO L479 AbstractCegarLoop]: Abstraction has 1053 states and 1277 transitions. [2020-09-24 20:32:35,037 INFO L480 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-09-24 20:32:35,037 INFO L276 IsEmpty]: Start isEmpty. Operand 1053 states and 1277 transitions. [2020-09-24 20:32:35,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-09-24 20:32:35,051 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:32:35,052 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:32:35,052 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 20:32:35,053 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:32:35,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:32:35,053 INFO L82 PathProgramCache]: Analyzing trace with hash 1985645406, now seen corresponding path program 1 times [2020-09-24 20:32:35,053 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:32:35,054 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1599293905] [2020-09-24 20:32:35,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:32:35,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:32:35,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:32:35,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:32:35,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:32:35,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:32:37,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:32:37,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-09-24 20:32:37,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 20:32:37,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2797 [2020-09-24 20:32:37,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:32:37,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 20:32:37,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 20:32:37,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-09-24 20:32:37,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:32:38,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:32:38,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:32:38,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:32:38,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:32:38,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 20:32:38,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:32:38,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-24 20:32:38,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:32:38,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:32:38,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:32:38,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 20:32:38,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:32:38,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 20:32:38,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:32:38,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:32:38,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:32:38,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:32:38,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 20:32:38,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:32:38,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-24 20:32:38,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:32:38,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:32:38,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 20:32:38,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 20:32:38,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:32:38,327 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-24 20:32:38,328 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1599293905] [2020-09-24 20:32:38,328 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:32:38,328 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-24 20:32:38,328 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099185650] [2020-09-24 20:32:38,331 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 20:32:38,331 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:32:38,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 20:32:38,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-24 20:32:38,332 INFO L87 Difference]: Start difference. First operand 1053 states and 1277 transitions. Second operand 6 states. [2020-09-24 20:32:40,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:32:40,519 INFO L93 Difference]: Finished difference Result 2943 states and 3753 transitions. [2020-09-24 20:32:40,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 20:32:40,520 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 133 [2020-09-24 20:32:40,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:32:40,540 INFO L225 Difference]: With dead ends: 2943 [2020-09-24 20:32:40,540 INFO L226 Difference]: Without dead ends: 1914 [2020-09-24 20:32:40,547 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-24 20:32:40,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1914 states. [2020-09-24 20:32:40,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1914 to 1652. [2020-09-24 20:32:40,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1652 states. [2020-09-24 20:32:40,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1652 states to 1652 states and 2037 transitions. [2020-09-24 20:32:40,649 INFO L78 Accepts]: Start accepts. Automaton has 1652 states and 2037 transitions. Word has length 133 [2020-09-24 20:32:40,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:32:40,650 INFO L479 AbstractCegarLoop]: Abstraction has 1652 states and 2037 transitions. [2020-09-24 20:32:40,651 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 20:32:40,654 INFO L276 IsEmpty]: Start isEmpty. Operand 1652 states and 2037 transitions. [2020-09-24 20:32:40,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-09-24 20:32:40,684 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:32:40,686 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:32:40,686 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 20:32:40,686 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:32:40,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:32:40,687 INFO L82 PathProgramCache]: Analyzing trace with hash -276939960, now seen corresponding path program 1 times [2020-09-24 20:32:40,687 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:32:40,687 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [515290575] [2020-09-24 20:32:40,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:32:40,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:32:40,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:32:40,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:32:40,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:32:41,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:32:41,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:32:43,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:32:43,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:32:44,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:32:45,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:32:45,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-09-24 20:32:45,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 20:32:45,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-09-24 20:32:45,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:32:45,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-24 20:32:45,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-09-24 20:32:45,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-24 20:32:45,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:32:46,573 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 36 [2020-09-24 20:32:46,741 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 35 [2020-09-24 20:32:47,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:32:47,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:32:47,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:32:47,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:32:47,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 20:32:47,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:32:47,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 20:32:47,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:32:47,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:32:47,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:32:47,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:32:47,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:32:47,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 20:32:47,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:32:47,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:32:47,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:32:47,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 20:32:47,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:32:47,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 20:32:47,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:32:47,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:32:47,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:32:47,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:32:47,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:32:47,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-24 20:32:47,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:32:47,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:32:47,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:32:47,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 20:32:47,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:32:47,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-24 20:32:47,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:32:47,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:32:47,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:32:47,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:32:47,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:32:47,668 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 29 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-24 20:32:47,669 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [515290575] [2020-09-24 20:32:47,669 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:32:47,669 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-24 20:32:47,670 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340752318] [2020-09-24 20:32:47,670 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-24 20:32:47,671 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:32:47,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-24 20:32:47,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=226, Unknown=0, NotChecked=0, Total=342 [2020-09-24 20:32:47,672 INFO L87 Difference]: Start difference. First operand 1652 states and 2037 transitions. Second operand 19 states. [2020-09-24 20:32:48,965 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-09-24 20:32:49,311 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 92