/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 --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/Problem10_label33.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:34:32,081 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:34:32,085 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:34:32,115 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:34:32,116 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:34:32,117 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:34:32,119 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:34:32,121 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:34:32,123 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:34:32,124 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:34:32,125 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:34:32,126 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:34:32,127 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:34:32,128 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:34:32,129 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:34:32,131 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:34:32,132 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:34:32,133 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:34:32,135 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:34:32,137 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:34:32,140 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:34:32,141 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:34:32,143 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:34:32,144 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:34:32,147 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:34:32,148 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:34:32,148 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:34:32,149 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:34:32,150 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:34:32,151 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:34:32,151 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:34:32,152 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:34:32,153 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:34:32,154 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:34:32,155 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:34:32,156 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:34:32,157 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:34:32,157 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:34:32,157 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:34:32,159 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:34:32,159 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:34:32,160 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 13:34:32,215 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:34:32,215 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:34:32,216 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:34:32,217 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:34:32,217 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:34:32,217 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:34:32,218 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:34:32,220 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:34:32,220 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:34:32,220 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:34:32,220 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:34:32,220 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:34:32,222 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:34:32,222 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:34:32,222 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:34:32,222 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:34:32,222 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:34:32,223 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:34:32,223 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:34:32,223 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:34:32,223 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:34:32,223 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:34:32,224 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:34:32,225 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:34:32,225 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:34:32,225 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:34:32,225 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:34:32,225 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:34:32,226 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:34:32,226 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=SMALLESTAMONGWIDE;tolerance=0.4;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=SMALLESTAMONGWIDE;tolerance=0.4;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=SMALLESTAMONGWIDE;tolerance=0.4;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=SMALLESTAMONGWIDE;tolerance=0.4;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=SMALLESTAMONGWIDE;tolerance=0.4;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=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; [2020-09-25 13:34:32,677 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:34:32,699 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:34:32,703 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:34:32,705 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:34:32,706 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:34:32,707 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label33.c [2020-09-25 13:34:32,809 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bc518e151/6f7d3546deee445ab5d5979f96c9092b/FLAG4b42314df [2020-09-25 13:34:33,461 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:34:33,463 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label33.c [2020-09-25 13:34:33,485 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bc518e151/6f7d3546deee445ab5d5979f96c9092b/FLAG4b42314df [2020-09-25 13:34:33,686 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bc518e151/6f7d3546deee445ab5d5979f96c9092b [2020-09-25 13:34:33,699 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:34:33,704 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:34:33,705 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:34:33,705 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:34:33,710 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:34:33,711 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:34:33" (1/1) ... [2020-09-25 13:34:33,716 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ad15a05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:33, skipping insertion in model container [2020-09-25 13:34:33,716 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:34:33" (1/1) ... [2020-09-25 13:34:33,726 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:34:33,789 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:34:34,303 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:34:34,310 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:34:34,556 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:34:34,577 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:34:34,577 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:34 WrapperNode [2020-09-25 13:34:34,578 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:34:34,579 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:34:34,579 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:34:34,579 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:34:34,595 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:34" (1/1) ... [2020-09-25 13:34:34,595 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:34" (1/1) ... [2020-09-25 13:34:34,616 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:34" (1/1) ... [2020-09-25 13:34:34,617 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:34" (1/1) ... [2020-09-25 13:34:34,655 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:34" (1/1) ... [2020-09-25 13:34:34,677 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:34" (1/1) ... [2020-09-25 13:34:34,684 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:34" (1/1) ... [2020-09-25 13:34:34,695 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:34:34,696 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:34:34,696 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:34:34,696 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:34:34,697 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:34" (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 13:34:34,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:34:34,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:34:34,798 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 13:34:34,798 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:34:34,798 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 13:34:34,799 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:34:34,799 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:34:34,799 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 13:34:34,799 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:34:34,799 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:34:34,800 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:34:36,268 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:34:36,268 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 13:34:36,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:34:36 BoogieIcfgContainer [2020-09-25 13:34:36,278 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:34:36,280 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:34:36,280 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:34:36,284 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:34:36,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:34:33" (1/3) ... [2020-09-25 13:34:36,286 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b9dacaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:34:36, skipping insertion in model container [2020-09-25 13:34:36,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:34" (2/3) ... [2020-09-25 13:34:36,287 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b9dacaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:34:36, skipping insertion in model container [2020-09-25 13:34:36,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:34:36" (3/3) ... [2020-09-25 13:34:36,290 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label33.c [2020-09-25 13:34:36,304 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:34:36,316 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:34:36,340 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:34:36,377 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:34:36,377 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:34:36,377 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:34:36,378 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:34:36,378 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:34:36,378 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:34:36,378 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:34:36,378 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:34:36,411 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 13:34:36,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-25 13:34:36,423 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:34:36,424 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] [2020-09-25 13:34:36,425 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:34:36,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:34:36,433 INFO L82 PathProgramCache]: Analyzing trace with hash -1274135065, now seen corresponding path program 1 times [2020-09-25 13:34:36,445 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:34:36,446 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1939204010] [2020-09-25 13:34:36,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:34:36,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:36,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:36,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:37,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:38,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:38,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-09-25 13:34:38,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:34:38,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1426 [2020-09-25 13:34:38,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:38,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:38,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:34:38,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 13:34:38,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 13:34:38,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 13:34:38,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:34:38,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:38,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:38,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:38,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:34:38,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:38,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 13:34:38,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:38,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:38,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:34:38,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:34:38,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:34:38,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:38,237 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 13:34:38,238 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1939204010] [2020-09-25 13:34:38,241 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:34:38,241 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 13:34:38,242 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959856163] [2020-09-25 13:34:38,250 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 13:34:38,250 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:34:38,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 13:34:38,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 13:34:38,274 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 13:34:40,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:34:40,409 INFO L93 Difference]: Finished difference Result 1089 states and 1514 transitions. [2020-09-25 13:34:40,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 13:34:40,411 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 63 [2020-09-25 13:34:40,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:34:40,434 INFO L225 Difference]: With dead ends: 1089 [2020-09-25 13:34:40,435 INFO L226 Difference]: Without dead ends: 575 [2020-09-25 13:34:40,450 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:34:40,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2020-09-25 13:34:40,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 545. [2020-09-25 13:34:40,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 545 states. [2020-09-25 13:34:40,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 642 transitions. [2020-09-25 13:34:40,584 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 642 transitions. Word has length 63 [2020-09-25 13:34:40,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:34:40,584 INFO L479 AbstractCegarLoop]: Abstraction has 545 states and 642 transitions. [2020-09-25 13:34:40,585 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 13:34:40,585 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 642 transitions. [2020-09-25 13:34:40,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-25 13:34:40,593 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:34:40,593 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 13:34:40,594 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:34:40,594 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:34:40,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:34:40,594 INFO L82 PathProgramCache]: Analyzing trace with hash 1742825944, now seen corresponding path program 1 times [2020-09-25 13:34:40,595 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:34:40,595 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1584275404] [2020-09-25 13:34:40,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:34:40,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:40,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:40,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:40,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:40,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:41,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:41,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:41,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:45,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:45,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-09-25 13:34:45,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:34:45,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-25 13:34:45,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:45,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:45,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:34:45,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 13:34:45,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-09-25 13:34:45,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:34:45,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:34:45,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:45,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:45,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:45,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:34:45,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:45,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 13:34:45,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:45,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:45,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:34:45,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:34:45,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:34:45,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:34:45,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:34:45,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:45,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:45,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:46,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:46,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 13:34:46,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:34:46,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-09-25 13:34:46,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:46,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:46,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:34:46,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:34:46,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 13:34:46,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:46,144 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 39 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 13:34:46,144 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1584275404] [2020-09-25 13:34:46,145 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:34:46,145 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 13:34:46,146 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730687144] [2020-09-25 13:34:46,148 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:34:46,148 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:34:46,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:34:46,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:34:46,149 INFO L87 Difference]: Start difference. First operand 545 states and 642 transitions. Second operand 5 states. [2020-09-25 13:34:47,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:34:47,964 INFO L93 Difference]: Finished difference Result 861 states and 1069 transitions. [2020-09-25 13:34:47,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:34:47,967 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 142 [2020-09-25 13:34:47,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:34:47,977 INFO L225 Difference]: With dead ends: 861 [2020-09-25 13:34:47,978 INFO L226 Difference]: Without dead ends: 859 [2020-09-25 13:34:47,980 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:34:47,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859 states. [2020-09-25 13:34:48,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859 to 697. [2020-09-25 13:34:48,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 697 states. [2020-09-25 13:34:48,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 874 transitions. [2020-09-25 13:34:48,043 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 874 transitions. Word has length 142 [2020-09-25 13:34:48,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:34:48,048 INFO L479 AbstractCegarLoop]: Abstraction has 697 states and 874 transitions. [2020-09-25 13:34:48,049 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:34:48,049 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 874 transitions. [2020-09-25 13:34:48,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-09-25 13:34:48,057 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:34:48,058 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 13:34:48,060 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:34:48,060 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:34:48,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:34:48,061 INFO L82 PathProgramCache]: Analyzing trace with hash 821407407, now seen corresponding path program 1 times [2020-09-25 13:34:48,061 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:34:48,061 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1044833264] [2020-09-25 13:34:48,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:34:48,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:48,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:48,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:48,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:48,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:48,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:49,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:49,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:49,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:50,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:53,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:53,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-09-25 13:34:53,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 13:34:53,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 13:34:53,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:53,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:53,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:34:53,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:34:53,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-25 13:34:53,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:53,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:34:53,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:53,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:53,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:53,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:34:53,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:53,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 13:34:53,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:53,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:53,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:34:53,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:34:53,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:34:53,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:53,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:34:53,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:53,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:53,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:53,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 13:34:53,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:53,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-09-25 13:34:53,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:53,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:53,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:34:53,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:34:53,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 13:34:53,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:53,488 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:34:53,489 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1044833264] [2020-09-25 13:34:53,489 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:34:53,490 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 13:34:53,490 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419858332] [2020-09-25 13:34:53,490 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:34:53,491 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:34:53,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:34:53,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:34:53,491 INFO L87 Difference]: Start difference. First operand 697 states and 874 transitions. Second operand 7 states. [2020-09-25 13:34:55,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:34:55,049 INFO L93 Difference]: Finished difference Result 1551 states and 1940 transitions. [2020-09-25 13:34:55,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 13:34:55,049 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 146 [2020-09-25 13:34:55,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:34:55,054 INFO L225 Difference]: With dead ends: 1551 [2020-09-25 13:34:55,054 INFO L226 Difference]: Without dead ends: 869 [2020-09-25 13:34:55,057 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-09-25 13:34:55,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 869 states. [2020-09-25 13:34:55,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 869 to 855. [2020-09-25 13:34:55,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 855 states. [2020-09-25 13:34:55,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1052 transitions. [2020-09-25 13:34:55,086 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1052 transitions. Word has length 146 [2020-09-25 13:34:55,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:34:55,087 INFO L479 AbstractCegarLoop]: Abstraction has 855 states and 1052 transitions. [2020-09-25 13:34:55,087 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 13:34:55,087 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1052 transitions. [2020-09-25 13:34:55,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-09-25 13:34:55,090 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:34:55,090 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 13:34:55,090 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:34:55,090 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:34:55,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:34:55,091 INFO L82 PathProgramCache]: Analyzing trace with hash -1962223494, now seen corresponding path program 1 times [2020-09-25 13:34:55,091 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:34:55,091 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [77536401] [2020-09-25 13:34:55,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:34:55,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:55,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:55,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:55,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:55,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:57,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:57,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:57,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:57,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:00,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:00,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-09-25 13:35:00,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 13:35:00,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 13:35:00,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:00,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:00,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 13:35:00,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:35:00,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-09-25 13:35:00,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:00,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:35:00,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:00,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:00,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:00,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:35:00,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:00,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 13:35:00,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:00,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:00,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:35:00,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:35:00,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:35:00,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:00,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:35:00,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:00,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:00,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:00,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 13:35:00,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:00,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-09-25 13:35:00,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:00,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:00,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:35:00,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:35:00,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 13:35:00,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:00,496 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 7 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:35:00,498 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [77536401] [2020-09-25 13:35:00,498 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:35:00,499 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 13:35:00,499 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075744041] [2020-09-25 13:35:00,500 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 13:35:00,500 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:35:00,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 13:35:00,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:35:00,503 INFO L87 Difference]: Start difference. First operand 855 states and 1052 transitions. Second operand 8 states. [2020-09-25 13:35:04,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:35:04,078 INFO L93 Difference]: Finished difference Result 2630 states and 3494 transitions. [2020-09-25 13:35:04,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 13:35:04,079 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 152 [2020-09-25 13:35:04,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:35:04,096 INFO L225 Difference]: With dead ends: 2630 [2020-09-25 13:35:04,096 INFO L226 Difference]: Without dead ends: 1940 [2020-09-25 13:35:04,101 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-09-25 13:35:04,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1940 states. [2020-09-25 13:35:04,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1940 to 1681. [2020-09-25 13:35:04,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1681 states. [2020-09-25 13:35:04,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1681 states to 1681 states and 2163 transitions. [2020-09-25 13:35:04,188 INFO L78 Accepts]: Start accepts. Automaton has 1681 states and 2163 transitions. Word has length 152 [2020-09-25 13:35:04,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:35:04,188 INFO L479 AbstractCegarLoop]: Abstraction has 1681 states and 2163 transitions. [2020-09-25 13:35:04,188 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 13:35:04,189 INFO L276 IsEmpty]: Start isEmpty. Operand 1681 states and 2163 transitions. [2020-09-25 13:35:04,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-09-25 13:35:04,193 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:35:04,193 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1] [2020-09-25 13:35:04,194 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:35:04,194 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:35:04,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:35:04,194 INFO L82 PathProgramCache]: Analyzing trace with hash 1916393390, now seen corresponding path program 1 times [2020-09-25 13:35:04,194 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:35:04,195 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [559475050] [2020-09-25 13:35:04,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:35:04,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:04,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:04,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:04,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:07,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:07,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:09,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:09,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-09-25 13:35:09,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 13:35:09,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 13:35:09,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:09,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:09,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:35:09,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 13:35:09,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-09-25 13:35:09,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:35:09,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:35:09,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:09,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:09,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:09,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:35:09,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:09,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 13:35:09,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:09,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:09,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:35:09,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:35:09,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:35:09,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:09,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:35:09,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:09,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:09,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:09,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-09-25 13:35:09,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:09,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 289 [2020-09-25 13:35:09,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:09,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:09,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:35:09,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:35:09,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-09-25 13:35:09,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:35:09,920 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:35:09,921 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [559475050] [2020-09-25 13:35:09,921 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:35:09,922 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 13:35:09,922 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007244554] [2020-09-25 13:35:09,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:35:09,923 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:35:09,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:35:09,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:35:09,924 INFO L87 Difference]: Start difference. First operand 1681 states and 2163 transitions. Second operand 7 states. [2020-09-25 13:35:12,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:35:12,378 INFO L93 Difference]: Finished difference Result 3907 states and 5326 transitions. [2020-09-25 13:35:12,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 13:35:12,379 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 195 [2020-09-25 13:35:12,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:35:12,393 INFO L225 Difference]: With dead ends: 3907 [2020-09-25 13:35:12,394 INFO L226 Difference]: Without dead ends: 2391 [2020-09-25 13:35:12,401 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 13:35:12,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2391 states. [2020-09-25 13:35:12,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2391 to 2315. [2020-09-25 13:35:12,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2315 states. [2020-09-25 13:35:12,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2315 states to 2315 states and 2929 transitions. [2020-09-25 13:35:12,473 INFO L78 Accepts]: Start accepts. Automaton has 2315 states and 2929 transitions. Word has length 195 [2020-09-25 13:35:12,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:35:12,473 INFO L479 AbstractCegarLoop]: Abstraction has 2315 states and 2929 transitions. [2020-09-25 13:35:12,473 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 13:35:12,474 INFO L276 IsEmpty]: Start isEmpty. Operand 2315 states and 2929 transitions. [2020-09-25 13:35:12,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2020-09-25 13:35:12,479 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:35:12,479 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 13:35:12,479 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 13:35:12,479 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:35:12,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:35:12,480 INFO L82 PathProgramCache]: Analyzing trace with hash -249277015, now seen corresponding path program 1 times [2020-09-25 13:35:12,480 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:35:12,480 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [829130290] [2020-09-25 13:35:12,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:35:12,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:12,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:12,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:12,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:13,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:13,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:17,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:17,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-09-25 13:35:17,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 13:35:17,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 13:35:17,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:17,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:17,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 13:35:17,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:35:17,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-09-25 13:35:17,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:35:17,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:35:17,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:17,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:17,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:17,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:35:17,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:17,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 13:35:17,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:17,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:17,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:35:17,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:35:17,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:35:17,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:35:17,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:35:17,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:17,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:17,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:17,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 13:35:17,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:17,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-09-25 13:35:17,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:17,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:17,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:35:17,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:35:17,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 13:35:17,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:17,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 13:35:17,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:17,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:18,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:18,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 13:35:18,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:18,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-09-25 13:35:18,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:18,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:18,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:35:18,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:35:18,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 13:35:18,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:35:18,150 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 167 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 13:35:18,150 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [829130290] [2020-09-25 13:35:18,151 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:35:18,151 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 13:35:18,152 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477336733] [2020-09-25 13:35:18,152 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 13:35:18,153 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:35:18,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 13:35:18,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-09-25 13:35:18,153 INFO L87 Difference]: Start difference. First operand 2315 states and 2929 transitions. Second operand 10 states.