/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 --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_label50.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 07:52:02,053 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 07:52:02,057 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 07:52:02,101 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 07:52:02,101 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 07:52:02,112 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 07:52:02,115 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 07:52:02,119 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 07:52:02,122 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 07:52:02,125 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 07:52:02,126 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 07:52:02,127 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 07:52:02,128 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 07:52:02,131 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 07:52:02,134 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 07:52:02,135 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 07:52:02,137 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 07:52:02,139 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 07:52:02,140 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 07:52:02,149 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 07:52:02,151 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 07:52:02,152 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 07:52:02,153 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 07:52:02,154 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 07:52:02,158 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 07:52:02,158 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 07:52:02,158 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 07:52:02,161 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 07:52:02,162 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 07:52:02,163 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 07:52:02,163 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 07:52:02,164 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 07:52:02,165 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 07:52:02,165 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 07:52:02,167 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 07:52:02,167 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 07:52:02,168 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 07:52:02,168 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 07:52:02,168 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 07:52:02,169 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 07:52:02,171 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 07:52:02,172 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 07:52:02,221 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 07:52:02,222 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 07:52:02,224 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 07:52:02,224 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 07:52:02,224 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 07:52:02,225 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 07:52:02,225 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 07:52:02,225 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 07:52:02,226 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 07:52:02,226 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 07:52:02,227 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 07:52:02,227 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 07:52:02,227 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 07:52:02,228 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 07:52:02,228 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 07:52:02,228 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 07:52:02,228 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 07:52:02,229 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 07:52:02,229 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 07:52:02,229 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 07:52:02,229 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 07:52:02,230 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:52:02,230 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 07:52:02,230 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 07:52:02,230 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 07:52:02,230 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 07:52:02,231 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 07:52:02,231 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 07:52:02,231 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 07:52:02,231 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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; [2020-09-25 07:52:02,673 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 07:52:02,699 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 07:52:02,704 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 07:52:02,706 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 07:52:02,706 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 07:52:02,707 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label50.c [2020-09-25 07:52:02,790 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2749b1389/650562b9d0714a0e813b3e34f141a34b/FLAG71dfecd8e [2020-09-25 07:52:03,468 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 07:52:03,469 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label50.c [2020-09-25 07:52:03,484 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2749b1389/650562b9d0714a0e813b3e34f141a34b/FLAG71dfecd8e [2020-09-25 07:52:03,678 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2749b1389/650562b9d0714a0e813b3e34f141a34b [2020-09-25 07:52:03,693 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 07:52:03,699 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 07:52:03,703 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 07:52:03,704 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 07:52:03,708 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 07:52:03,709 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:52:03" (1/1) ... [2020-09-25 07:52:03,714 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 25.09 07:52:03, skipping insertion in model container [2020-09-25 07:52:03,714 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:52:03" (1/1) ... [2020-09-25 07:52:03,726 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 07:52:03,787 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 07:52:04,250 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:52:04,258 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 07:52:04,494 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:52:04,517 INFO L208 MainTranslator]: Completed translation [2020-09-25 07:52:04,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:04 WrapperNode [2020-09-25 07:52:04,518 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 07:52:04,519 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 07:52:04,519 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 07:52:04,519 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 07:52:04,534 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:04" (1/1) ... [2020-09-25 07:52:04,534 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:04" (1/1) ... [2020-09-25 07:52:04,558 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:04" (1/1) ... [2020-09-25 07:52:04,558 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:04" (1/1) ... [2020-09-25 07:52:04,606 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:04" (1/1) ... [2020-09-25 07:52:04,633 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:04" (1/1) ... [2020-09-25 07:52:04,640 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:04" (1/1) ... [2020-09-25 07:52:04,647 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 07:52:04,648 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 07:52:04,648 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 07:52:04,648 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 07:52:04,650 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:04" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:52:04,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 07:52:04,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 07:52:04,730 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 07:52:04,730 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 07:52:04,730 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 07:52:04,730 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 07:52:04,730 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 07:52:04,730 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 07:52:04,731 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 07:52:04,731 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 07:52:04,731 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 07:52:06,142 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 07:52:06,143 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 07:52:06,152 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:52:06 BoogieIcfgContainer [2020-09-25 07:52:06,152 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 07:52:06,153 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 07:52:06,154 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 07:52:06,157 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 07:52:06,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 07:52:03" (1/3) ... [2020-09-25 07:52:06,159 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 25.09 07:52:06, skipping insertion in model container [2020-09-25 07:52:06,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:04" (2/3) ... [2020-09-25 07:52:06,160 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 25.09 07:52:06, skipping insertion in model container [2020-09-25 07:52:06,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:52:06" (3/3) ... [2020-09-25 07:52:06,162 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label50.c [2020-09-25 07:52:06,174 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 07:52:06,185 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 07:52:06,212 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 07:52:06,248 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 07:52:06,249 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 07:52:06,249 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 07:52:06,249 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 07:52:06,249 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 07:52:06,249 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 07:52:06,249 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 07:52:06,250 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 07:52:06,284 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 07:52:06,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-09-25 07:52:06,304 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:52:06,306 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] [2020-09-25 07:52:06,307 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:52:06,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:52:06,316 INFO L82 PathProgramCache]: Analyzing trace with hash 249673445, now seen corresponding path program 1 times [2020-09-25 07:52:06,328 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:52:06,328 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1523682103] [2020-09-25 07:52:06,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:52:06,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:06,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:07,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:08,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:09,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:09,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:09,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:10,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:11,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:11,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-09-25 07:52:11,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 07:52:11,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 07:52:11,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:11,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:11,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:52:11,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 07:52:11,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-25 07:52:11,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 07:52:11,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:52:11,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:11,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:11,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:11,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 07:52:11,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:52:11,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 07:52:11,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:11,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:11,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:52:11,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:52:11,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 07:52:11,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:52:11,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:52:11,899 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1523682103] [2020-09-25 07:52:11,902 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:52:11,903 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 07:52:11,904 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109218412] [2020-09-25 07:52:11,913 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 07:52:11,913 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:52:11,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 07:52:11,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 07:52:11,938 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 07:52:14,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:52:14,280 INFO L93 Difference]: Finished difference Result 1268 states and 1667 transitions. [2020-09-25 07:52:14,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 07:52:14,286 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 107 [2020-09-25 07:52:14,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:52:14,330 INFO L225 Difference]: With dead ends: 1268 [2020-09-25 07:52:14,330 INFO L226 Difference]: Without dead ends: 694 [2020-09-25 07:52:14,342 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:52:14,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2020-09-25 07:52:14,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 603. [2020-09-25 07:52:14,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 07:52:14,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 719 transitions. [2020-09-25 07:52:14,446 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 719 transitions. Word has length 107 [2020-09-25 07:52:14,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:52:14,447 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 719 transitions. [2020-09-25 07:52:14,447 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 07:52:14,447 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 719 transitions. [2020-09-25 07:52:14,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-09-25 07:52:14,456 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:52:14,456 INFO L422 BasicCegarLoop]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:52:14,457 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 07:52:14,457 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:52:14,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:52:14,458 INFO L82 PathProgramCache]: Analyzing trace with hash -72243779, now seen corresponding path program 1 times [2020-09-25 07:52:14,458 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:52:14,458 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2098914805] [2020-09-25 07:52:14,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:52:14,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:14,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:14,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:14,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:16,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:17,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:18,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:19,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:19,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-09-25 07:52:19,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 07:52:19,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-25 07:52:19,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:19,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:19,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:52:19,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 07:52:19,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 07:52:19,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:52:19,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:52:19,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:19,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:19,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:19,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 07:52:19,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:52:19,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 07:52:19,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:19,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:19,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:52:19,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:52:19,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 07:52:19,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:52:19,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 07:52:19,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:19,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:19,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:19,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 07:52:19,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:52:19,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-25 07:52:19,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:19,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:19,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:52:19,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:52:19,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 07:52:19,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:52:19,795 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:52:19,796 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2098914805] [2020-09-25 07:52:19,796 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:52:19,797 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 07:52:19,797 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800986191] [2020-09-25 07:52:19,799 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:52:19,800 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:52:19,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:52:19,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:52:19,800 INFO L87 Difference]: Start difference. First operand 603 states and 719 transitions. Second operand 7 states. [2020-09-25 07:52:22,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:52:22,071 INFO L93 Difference]: Finished difference Result 1591 states and 1980 transitions. [2020-09-25 07:52:22,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 07:52:22,071 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 128 [2020-09-25 07:52:22,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:52:22,080 INFO L225 Difference]: With dead ends: 1591 [2020-09-25 07:52:22,081 INFO L226 Difference]: Without dead ends: 1012 [2020-09-25 07:52:22,084 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 07:52:22,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1012 states. [2020-09-25 07:52:22,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1012 to 966. [2020-09-25 07:52:22,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 966 states. [2020-09-25 07:52:22,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 966 states to 966 states and 1175 transitions. [2020-09-25 07:52:22,158 INFO L78 Accepts]: Start accepts. Automaton has 966 states and 1175 transitions. Word has length 128 [2020-09-25 07:52:22,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:52:22,161 INFO L479 AbstractCegarLoop]: Abstraction has 966 states and 1175 transitions. [2020-09-25 07:52:22,161 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:52:22,161 INFO L276 IsEmpty]: Start isEmpty. Operand 966 states and 1175 transitions. [2020-09-25 07:52:22,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-09-25 07:52:22,170 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:52:22,170 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:52:22,170 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 07:52:22,171 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:52:22,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:52:22,171 INFO L82 PathProgramCache]: Analyzing trace with hash -1990961385, now seen corresponding path program 1 times [2020-09-25 07:52:22,171 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:52:22,172 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2076772768] [2020-09-25 07:52:22,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:52:22,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:22,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:22,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:22,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:22,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:24,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:24,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:24,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:25,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:25,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:26,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:26,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:27,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:27,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:27,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-09-25 07:52:27,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 07:52:27,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5130 [2020-09-25 07:52:27,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:27,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:27,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:52:27,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-25 07:52:27,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 07:52:27,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:52:27,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:52:27,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:27,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:27,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:27,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 07:52:27,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:52:27,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 07:52:27,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:27,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:27,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:52:27,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:52:27,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:52:27,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:52:27,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 07:52:27,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:27,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:27,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:27,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:52:27,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:52:27,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 07:52:27,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:27,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:27,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:52:27,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:52:27,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 07:52:27,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:52:27,520 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:52:27,521 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2076772768] [2020-09-25 07:52:27,521 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:52:27,521 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 07:52:27,522 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801338761] [2020-09-25 07:52:27,522 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:52:27,522 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:52:27,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:52:27,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:52:27,523 INFO L87 Difference]: Start difference. First operand 966 states and 1175 transitions. Second operand 5 states. [2020-09-25 07:52:29,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:52:29,536 INFO L93 Difference]: Finished difference Result 1933 states and 2360 transitions. [2020-09-25 07:52:29,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 07:52:29,536 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 129 [2020-09-25 07:52:29,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:52:29,548 INFO L225 Difference]: With dead ends: 1933 [2020-09-25 07:52:29,548 INFO L226 Difference]: Without dead ends: 991 [2020-09-25 07:52:29,553 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 07:52:29,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 991 states. [2020-09-25 07:52:29,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 991 to 966. [2020-09-25 07:52:29,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 966 states. [2020-09-25 07:52:29,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 966 states to 966 states and 1128 transitions. [2020-09-25 07:52:29,592 INFO L78 Accepts]: Start accepts. Automaton has 966 states and 1128 transitions. Word has length 129 [2020-09-25 07:52:29,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:52:29,595 INFO L479 AbstractCegarLoop]: Abstraction has 966 states and 1128 transitions. [2020-09-25 07:52:29,595 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:52:29,595 INFO L276 IsEmpty]: Start isEmpty. Operand 966 states and 1128 transitions. [2020-09-25 07:52:29,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-09-25 07:52:29,599 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:52:29,600 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:52:29,601 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 07:52:29,601 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:52:29,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:52:29,601 INFO L82 PathProgramCache]: Analyzing trace with hash -532868870, now seen corresponding path program 1 times [2020-09-25 07:52:29,602 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:52:29,603 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1647038370] [2020-09-25 07:52:29,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:52:29,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:29,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:29,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:29,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:30,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:30,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:31,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:31,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:32,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:32,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:34,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:34,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-09-25 07:52:34,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 07:52:34,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 07:52:34,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:34,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:34,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:52:34,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-09-25 07:52:34,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-09-25 07:52:34,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:52:34,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:52:34,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:34,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:34,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:34,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 07:52:34,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:52:34,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 07:52:34,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:34,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:34,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:52:34,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:52:34,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:52:34,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 07:52:34,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 07:52:34,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:34,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:34,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:34,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:52:34,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:52:34,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-25 07:52:34,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:34,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:34,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:52:34,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:52:34,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 07:52:34,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:52:34,930 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:52:34,930 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1647038370] [2020-09-25 07:52:34,931 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:52:34,931 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 07:52:34,931 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744651269] [2020-09-25 07:52:34,932 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:52:34,932 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:52:34,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:52:34,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:52:34,933 INFO L87 Difference]: Start difference. First operand 966 states and 1128 transitions. Second operand 5 states. [2020-09-25 07:52:36,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:52:36,827 INFO L93 Difference]: Finished difference Result 2525 states and 3056 transitions. [2020-09-25 07:52:36,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 07:52:36,829 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 136 [2020-09-25 07:52:36,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:52:36,840 INFO L225 Difference]: With dead ends: 2525 [2020-09-25 07:52:36,840 INFO L226 Difference]: Without dead ends: 1583 [2020-09-25 07:52:36,844 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 07:52:36,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1583 states. [2020-09-25 07:52:36,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1583 to 1540. [2020-09-25 07:52:36,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1540 states. [2020-09-25 07:52:36,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1540 states to 1540 states and 1844 transitions. [2020-09-25 07:52:36,905 INFO L78 Accepts]: Start accepts. Automaton has 1540 states and 1844 transitions. Word has length 136 [2020-09-25 07:52:36,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:52:36,906 INFO L479 AbstractCegarLoop]: Abstraction has 1540 states and 1844 transitions. [2020-09-25 07:52:36,906 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:52:36,906 INFO L276 IsEmpty]: Start isEmpty. Operand 1540 states and 1844 transitions. [2020-09-25 07:52:36,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-09-25 07:52:36,914 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:52:36,915 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:52:36,915 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 07:52:36,915 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:52:36,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:52:36,916 INFO L82 PathProgramCache]: Analyzing trace with hash -645015236, now seen corresponding path program 1 times [2020-09-25 07:52:36,916 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:52:36,916 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1100684957] [2020-09-25 07:52:36,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:52:36,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:36,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:37,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:37,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:37,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:37,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:37,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:37,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:38,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:38,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-09-25 07:52:38,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 07:52:38,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1620 [2020-09-25 07:52:38,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:38,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:38,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 07:52:38,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 07:52:38,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 07:52:38,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:52:38,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:52:38,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:38,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:38,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:38,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 07:52:38,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:52:38,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-25 07:52:38,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:38,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:38,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 07:52:38,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:52:38,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 07:52:38,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:52:38,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 07:52:38,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:38,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:38,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:38,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 07:52:38,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:52:38,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-09-25 07:52:38,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:38,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:38,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:52:38,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:52:38,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 07:52:38,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:52:38,952 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:52:38,952 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1100684957] [2020-09-25 07:52:38,952 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:52:38,953 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 07:52:38,953 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878505429] [2020-09-25 07:52:38,953 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 07:52:38,954 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:52:38,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 07:52:38,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 07:52:38,954 INFO L87 Difference]: Start difference. First operand 1540 states and 1844 transitions. Second operand 8 states. [2020-09-25 07:52:39,514 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 62 [2020-09-25 07:52:42,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:52:42,386 INFO L93 Difference]: Finished difference Result 3218 states and 3858 transitions. [2020-09-25 07:52:42,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 07:52:42,386 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 137 [2020-09-25 07:52:42,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:52:42,398 INFO L225 Difference]: With dead ends: 3218 [2020-09-25 07:52:42,398 INFO L226 Difference]: Without dead ends: 1843 [2020-09-25 07:52:42,403 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2020-09-25 07:52:42,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1843 states. [2020-09-25 07:52:42,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1843 to 1725. [2020-09-25 07:52:42,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1725 states. [2020-09-25 07:52:42,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1725 states to 1725 states and 2057 transitions. [2020-09-25 07:52:42,456 INFO L78 Accepts]: Start accepts. Automaton has 1725 states and 2057 transitions. Word has length 137 [2020-09-25 07:52:42,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:52:42,456 INFO L479 AbstractCegarLoop]: Abstraction has 1725 states and 2057 transitions. [2020-09-25 07:52:42,456 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 07:52:42,457 INFO L276 IsEmpty]: Start isEmpty. Operand 1725 states and 2057 transitions. [2020-09-25 07:52:42,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-09-25 07:52:42,463 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:52:42,463 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 07:52:42,463 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 07:52:42,463 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:52:42,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:52:42,464 INFO L82 PathProgramCache]: Analyzing trace with hash 281598029, now seen corresponding path program 1 times [2020-09-25 07:52:42,464 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:52:42,464 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1413530559] [2020-09-25 07:52:42,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:52:42,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:42,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:42,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:42,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:42,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:42,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:43,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:47,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:47,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-09-25 07:52:47,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 07:52:47,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 07:52:47,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:47,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:47,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:52:47,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 07:52:47,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 07:52:47,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:52:47,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:52:47,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:47,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:47,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:47,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 07:52:47,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:52:47,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 07:52:47,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:47,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:47,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:52:47,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:52:47,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:52:47,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 07:52:47,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 07:52:47,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:47,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:47,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:47,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 07:52:47,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:52:47,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 07:52:47,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:47,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:47,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:52:47,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:52:47,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 07:52:47,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:52:47,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 07:52:47,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:47,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:47,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:47,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 07:52:47,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:52:47,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-09-25 07:52:47,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:47,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:47,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:52:47,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:52:47,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 07:52:47,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:52:47,972 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 44 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 07:52:47,973 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1413530559] [2020-09-25 07:52:47,973 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:52:47,973 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 07:52:47,974 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984419423] [2020-09-25 07:52:47,974 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:52:47,975 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:52:47,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:52:47,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:52:47,976 INFO L87 Difference]: Start difference. First operand 1725 states and 2057 transitions. Second operand 7 states. [2020-09-25 07:52:50,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:52:50,599 INFO L93 Difference]: Finished difference Result 3766 states and 4691 transitions. [2020-09-25 07:52:50,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 07:52:50,601 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 158 [2020-09-25 07:52:50,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:52:50,617 INFO L225 Difference]: With dead ends: 3766 [2020-09-25 07:52:50,617 INFO L226 Difference]: Without dead ends: 2206 [2020-09-25 07:52:50,623 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 07:52:50,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2206 states. [2020-09-25 07:52:50,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2206 to 2041. [2020-09-25 07:52:50,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2041 states. [2020-09-25 07:52:50,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2041 states to 2041 states and 2421 transitions. [2020-09-25 07:52:50,696 INFO L78 Accepts]: Start accepts. Automaton has 2041 states and 2421 transitions. Word has length 158 [2020-09-25 07:52:50,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:52:50,697 INFO L479 AbstractCegarLoop]: Abstraction has 2041 states and 2421 transitions. [2020-09-25 07:52:50,697 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:52:50,697 INFO L276 IsEmpty]: Start isEmpty. Operand 2041 states and 2421 transitions. [2020-09-25 07:52:50,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-09-25 07:52:50,704 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:52:50,705 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2020-09-25 07:52:50,705 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 07:52:50,705 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:52:50,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:52:50,705 INFO L82 PathProgramCache]: Analyzing trace with hash -1490542447, now seen corresponding path program 1 times [2020-09-25 07:52:50,706 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:52:50,706 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1062692605] [2020-09-25 07:52:50,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:52:50,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:50,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:50,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:51,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking...