/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_label52.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:35:15,111 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:35:15,115 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:35:15,142 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:35:15,142 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:35:15,144 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:35:15,145 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:35:15,151 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:35:15,155 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:35:15,156 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:35:15,157 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:35:15,159 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:35:15,160 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:35:15,161 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:35:15,164 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:35:15,166 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:35:15,167 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:35:15,170 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:35:15,174 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:35:15,179 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:35:15,184 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:35:15,190 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:35:15,191 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:35:15,192 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:35:15,198 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:35:15,199 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:35:15,199 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:35:15,200 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:35:15,203 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:35:15,204 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:35:15,204 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:35:15,205 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:35:15,206 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:35:15,209 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:35:15,210 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:35:15,211 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:35:15,212 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:35:15,212 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:35:15,212 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:35:15,213 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:35:15,216 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:35:15,217 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 13:35:15,245 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:35:15,246 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:35:15,247 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:35:15,247 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:35:15,248 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:35:15,248 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:35:15,248 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:35:15,248 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:35:15,248 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:35:15,249 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:35:15,249 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:35:15,249 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:35:15,249 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:35:15,249 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:35:15,250 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:35:15,250 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:35:15,250 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:35:15,250 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:35:15,250 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:35:15,251 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:35:15,251 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:35:15,251 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:35:15,251 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:35:15,251 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:35:15,252 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:35:15,252 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:35:15,252 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:35:15,252 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:35:15,252 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:35:15,253 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 13:35:15,715 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:35:15,737 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:35:15,743 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:35:15,745 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:35:15,747 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:35:15,748 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label52.c [2020-09-25 13:35:15,850 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c98f1885b/059f2c158c6f4f4e94ca5b5645f02b9a/FLAGbc9fe6455 [2020-09-25 13:35:16,523 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:35:16,524 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label52.c [2020-09-25 13:35:16,538 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c98f1885b/059f2c158c6f4f4e94ca5b5645f02b9a/FLAGbc9fe6455 [2020-09-25 13:35:16,747 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c98f1885b/059f2c158c6f4f4e94ca5b5645f02b9a [2020-09-25 13:35:16,764 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:35:16,771 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:35:16,774 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:35:16,774 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:35:16,778 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:35:16,779 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:35:16" (1/1) ... [2020-09-25 13:35:16,785 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cbac012 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:16, skipping insertion in model container [2020-09-25 13:35:16,785 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:35:16" (1/1) ... [2020-09-25 13:35:16,795 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:35:16,849 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:35:17,345 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:35:17,352 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:35:17,584 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:35:17,604 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:35:17,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:17 WrapperNode [2020-09-25 13:35:17,605 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:35:17,606 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:35:17,606 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:35:17,606 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:35:17,625 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:17" (1/1) ... [2020-09-25 13:35:17,626 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:17" (1/1) ... [2020-09-25 13:35:17,646 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:17" (1/1) ... [2020-09-25 13:35:17,647 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:17" (1/1) ... [2020-09-25 13:35:17,686 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:17" (1/1) ... [2020-09-25 13:35:17,704 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:17" (1/1) ... [2020-09-25 13:35:17,714 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:17" (1/1) ... [2020-09-25 13:35:17,730 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:35:17,731 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:35:17,732 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:35:17,732 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:35:17,737 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:17" (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 13:35:17,824 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:35:17,824 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:35:17,824 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 13:35:17,824 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:35:17,824 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 13:35:17,824 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:35:17,825 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:35:17,825 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 13:35:17,825 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:35:17,825 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:35:17,825 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:35:19,398 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:35:19,398 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 13:35:19,407 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:35:19 BoogieIcfgContainer [2020-09-25 13:35:19,408 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:35:19,409 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:35:19,409 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:35:19,414 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:35:19,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:35:16" (1/3) ... [2020-09-25 13:35:19,417 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60447c24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:35:19, skipping insertion in model container [2020-09-25 13:35:19,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:17" (2/3) ... [2020-09-25 13:35:19,418 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60447c24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:35:19, skipping insertion in model container [2020-09-25 13:35:19,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:35:19" (3/3) ... [2020-09-25 13:35:19,421 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label52.c [2020-09-25 13:35:19,437 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:35:19,451 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:35:19,481 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:35:19,526 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:35:19,527 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:35:19,527 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:35:19,527 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:35:19,527 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:35:19,528 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:35:19,528 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:35:19,528 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:35:19,563 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 13:35:19,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-09-25 13:35:19,576 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:35:19,578 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] [2020-09-25 13:35:19,579 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:35:19,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:35:19,590 INFO L82 PathProgramCache]: Analyzing trace with hash 963589103, now seen corresponding path program 1 times [2020-09-25 13:35:19,606 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:35:19,607 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [982380634] [2020-09-25 13:35:19,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:35:19,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:19,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:20,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:20,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:20,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-25 13:35:20,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:35:20,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 664 [2020-09-25 13:35:20,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:20,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:20,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:35:20,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 13:35:20,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-09-25 13:35:20,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 13:35:20,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:35:20,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:20,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:20,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:20,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:35:20,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:20,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-25 13:35:20,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:20,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:20,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:35:20,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:35:20,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:35:20,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:20,756 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 13:35:20,757 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [982380634] [2020-09-25 13:35:20,760 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:35:20,760 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 13:35:20,789 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371868825] [2020-09-25 13:35:20,797 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 13:35:20,797 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:35:20,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 13:35:20,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 13:35:20,820 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 13:35:23,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:35:23,030 INFO L93 Difference]: Finished difference Result 1089 states and 1514 transitions. [2020-09-25 13:35:23,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 13:35:23,033 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2020-09-25 13:35:23,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:35:23,065 INFO L225 Difference]: With dead ends: 1089 [2020-09-25 13:35:23,065 INFO L226 Difference]: Without dead ends: 575 [2020-09-25 13:35:23,076 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 13:35:23,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2020-09-25 13:35:23,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 545. [2020-09-25 13:35:23,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 545 states. [2020-09-25 13:35:23,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 642 transitions. [2020-09-25 13:35:23,178 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 642 transitions. Word has length 60 [2020-09-25 13:35:23,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:35:23,178 INFO L479 AbstractCegarLoop]: Abstraction has 545 states and 642 transitions. [2020-09-25 13:35:23,179 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 13:35:23,179 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 642 transitions. [2020-09-25 13:35:23,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-09-25 13:35:23,207 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:35:23,207 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:35:23,208 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:35:23,208 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:35:23,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:35:23,209 INFO L82 PathProgramCache]: Analyzing trace with hash 2017301439, now seen corresponding path program 1 times [2020-09-25 13:35:23,211 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:35:23,211 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1354868860] [2020-09-25 13:35:23,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:35:23,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:23,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:23,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:23,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:23,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:24,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:24,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:25,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:27,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:27,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-09-25 13:35:27,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:35:27,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4631 [2020-09-25 13:35:27,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:27,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:27,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:35:27,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 13:35:27,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-09-25 13:35:27,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:28,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:35:28,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:28,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:28,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:28,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:35:28,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:28,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 13:35:28,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:28,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:28,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:35:28,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:35:28,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:35:28,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:28,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:35:28,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:28,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:28,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:28,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:28,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 13:35:28,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:35:28,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-09-25 13:35:28,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:28,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:28,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:35:28,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:35:28,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 13:35:28,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:28,276 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 36 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 13:35:28,277 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1354868860] [2020-09-25 13:35:28,277 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:35:28,277 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 13:35:28,277 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91870500] [2020-09-25 13:35:28,280 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:35:28,280 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:35:28,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:35:28,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:35:28,281 INFO L87 Difference]: Start difference. First operand 545 states and 642 transitions. Second operand 5 states. [2020-09-25 13:35:30,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:35:30,065 INFO L93 Difference]: Finished difference Result 1389 states and 1702 transitions. [2020-09-25 13:35:30,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:35:30,066 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 139 [2020-09-25 13:35:30,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:35:30,074 INFO L225 Difference]: With dead ends: 1389 [2020-09-25 13:35:30,074 INFO L226 Difference]: Without dead ends: 859 [2020-09-25 13:35:30,077 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 13:35:30,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859 states. [2020-09-25 13:35:30,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859 to 849. [2020-09-25 13:35:30,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 849 states. [2020-09-25 13:35:30,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 849 states to 849 states and 1017 transitions. [2020-09-25 13:35:30,120 INFO L78 Accepts]: Start accepts. Automaton has 849 states and 1017 transitions. Word has length 139 [2020-09-25 13:35:30,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:35:30,121 INFO L479 AbstractCegarLoop]: Abstraction has 849 states and 1017 transitions. [2020-09-25 13:35:30,121 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:35:30,121 INFO L276 IsEmpty]: Start isEmpty. Operand 849 states and 1017 transitions. [2020-09-25 13:35:30,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-09-25 13:35:30,125 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:35:30,125 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:35:30,126 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:35:30,126 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:35:30,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:35:30,127 INFO L82 PathProgramCache]: Analyzing trace with hash -273743075, now seen corresponding path program 1 times [2020-09-25 13:35:30,127 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:35:30,127 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [722036241] [2020-09-25 13:35:30,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:35:30,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:30,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:30,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:30,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:30,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:32,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:32,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:32,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:33,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:33,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-09-25 13:35:33,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:35:33,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3737 [2020-09-25 13:35:33,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:33,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:33,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 13:35:33,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:35:33,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-09-25 13:35:33,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:34,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:35:34,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:34,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:34,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:34,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:35:34,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:34,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 13:35:34,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:34,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:34,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:35:34,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:35:34,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:35:34,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:34,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:35:34,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:34,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:34,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:34,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 13:35:34,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:34,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-09-25 13:35:34,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:34,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:34,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:35:34,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:35:34,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 13:35:34,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:34,331 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 7 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:35:34,332 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [722036241] [2020-09-25 13:35:34,332 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:35:34,332 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 13:35:34,333 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201823975] [2020-09-25 13:35:34,333 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 13:35:34,334 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:35:34,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 13:35:34,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:35:34,335 INFO L87 Difference]: Start difference. First operand 849 states and 1017 transitions. Second operand 8 states. [2020-09-25 13:35:37,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:35:37,634 INFO L93 Difference]: Finished difference Result 2932 states and 3692 transitions. [2020-09-25 13:35:37,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 13:35:37,636 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 149 [2020-09-25 13:35:37,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:35:37,657 INFO L225 Difference]: With dead ends: 2932 [2020-09-25 13:35:37,657 INFO L226 Difference]: Without dead ends: 2098 [2020-09-25 13:35:37,662 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-09-25 13:35:37,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2098 states. [2020-09-25 13:35:37,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2098 to 1983. [2020-09-25 13:35:37,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1983 states. [2020-09-25 13:35:37,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1983 states to 1983 states and 2445 transitions. [2020-09-25 13:35:37,776 INFO L78 Accepts]: Start accepts. Automaton has 1983 states and 2445 transitions. Word has length 149 [2020-09-25 13:35:37,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:35:37,778 INFO L479 AbstractCegarLoop]: Abstraction has 1983 states and 2445 transitions. [2020-09-25 13:35:37,778 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 13:35:37,778 INFO L276 IsEmpty]: Start isEmpty. Operand 1983 states and 2445 transitions. [2020-09-25 13:35:37,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-09-25 13:35:37,791 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:35:37,792 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, 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] [2020-09-25 13:35:37,792 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:35:37,792 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:35:37,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:35:37,793 INFO L82 PathProgramCache]: Analyzing trace with hash -103369624, now seen corresponding path program 1 times [2020-09-25 13:35:37,793 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:35:37,794 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [162367544] [2020-09-25 13:35:37,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:35:37,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:37,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:38,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:38,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:39,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:39,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:41,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:41,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:41,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:42,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:42,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 232 [2020-09-25 13:35:42,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 13:35:42,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4375 [2020-09-25 13:35:42,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:42,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:42,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:35:42,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-09-25 13:35:42,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-09-25 13:35:42,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:42,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:35:42,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:42,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:42,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:42,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:35:42,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:42,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:35:42,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:42,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:42,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:35:42,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:35:42,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:35:42,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:42,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:35:42,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:42,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:42,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:42,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 13:35:42,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:42,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-09-25 13:35:42,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:42,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:42,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:35:42,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:35:42,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 13:35:42,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:42,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 13:35:42,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:42,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:42,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:42,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:42,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 13:35:42,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:35:42,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-09-25 13:35:42,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:42,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:42,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:35:42,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:35:42,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 13:35:42,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:42,683 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 88 proven. 2 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2020-09-25 13:35:42,683 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [162367544] [2020-09-25 13:35:42,684 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:35:42,684 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 13:35:42,684 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954047267] [2020-09-25 13:35:42,685 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 13:35:42,686 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:35:42,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 13:35:42,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:35:42,687 INFO L87 Difference]: Start difference. First operand 1983 states and 2445 transitions. Second operand 6 states. [2020-09-25 13:35:45,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:35:45,222 INFO L93 Difference]: Finished difference Result 5340 states and 7110 transitions. [2020-09-25 13:35:45,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 13:35:45,222 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 219 [2020-09-25 13:35:45,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:35:45,243 INFO L225 Difference]: With dead ends: 5340 [2020-09-25 13:35:45,243 INFO L226 Difference]: Without dead ends: 3372 [2020-09-25 13:35:45,252 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:35:45,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3372 states. [2020-09-25 13:35:45,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3372 to 3350. [2020-09-25 13:35:45,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3350 states. [2020-09-25 13:35:45,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3350 states to 3350 states and 4309 transitions. [2020-09-25 13:35:45,368 INFO L78 Accepts]: Start accepts. Automaton has 3350 states and 4309 transitions. Word has length 219 [2020-09-25 13:35:45,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:35:45,369 INFO L479 AbstractCegarLoop]: Abstraction has 3350 states and 4309 transitions. [2020-09-25 13:35:45,369 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 13:35:45,369 INFO L276 IsEmpty]: Start isEmpty. Operand 3350 states and 4309 transitions. [2020-09-25 13:35:45,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-09-25 13:35:45,376 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:35:45,377 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, 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] [2020-09-25 13:35:45,377 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:35:45,377 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:35:45,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:35:45,378 INFO L82 PathProgramCache]: Analyzing trace with hash 1582661552, now seen corresponding path program 1 times [2020-09-25 13:35:45,378 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:35:45,378 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1252735620] [2020-09-25 13:35:45,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:35:45,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:45,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:45,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:45,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:47,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:50,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:50,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 257 [2020-09-25 13:35:50,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 13:35:50,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 13:35:50,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:50,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:50,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:35:50,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 102 [2020-09-25 13:35:50,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-09-25 13:35:50,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:50,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:35:50,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:50,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:50,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:50,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:35:50,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:50,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 13:35:50,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:50,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:50,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:35:50,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:35:50,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:35:50,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:50,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:35:50,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:50,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:50,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:50,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-25 13:35:50,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:50,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-09-25 13:35:50,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:50,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:50,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:35:50,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:35:50,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-25 13:35:50,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:50,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-09-25 13:35:50,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:50,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:50,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:50,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-09-25 13:35:50,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:50,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-09-25 13:35:50,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:50,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:50,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:35:50,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:35:50,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 13:35:50,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:50,947 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 168 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 13:35:50,948 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1252735620] [2020-09-25 13:35:50,948 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:35:50,948 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 13:35:50,949 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524294184] [2020-09-25 13:35:50,950 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:35:50,950 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:35:50,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:35:50,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:35:50,951 INFO L87 Difference]: Start difference. First operand 3350 states and 4309 transitions. Second operand 7 states. [2020-09-25 13:35:56,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:35:56,155 INFO L93 Difference]: Finished difference Result 7703 states and 10057 transitions. [2020-09-25 13:35:56,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 13:35:56,164 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 244 [2020-09-25 13:35:56,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:35:56,189 INFO L225 Difference]: With dead ends: 7703 [2020-09-25 13:35:56,189 INFO L226 Difference]: Without dead ends: 4368 [2020-09-25 13:35:56,201 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-25 13:35:56,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4368 states. [2020-09-25 13:35:56,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4368 to 4315. [2020-09-25 13:35:56,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4315 states. [2020-09-25 13:35:56,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4315 states to 4315 states and 5611 transitions. [2020-09-25 13:35:56,318 INFO L78 Accepts]: Start accepts. Automaton has 4315 states and 5611 transitions. Word has length 244 [2020-09-25 13:35:56,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:35:56,319 INFO L479 AbstractCegarLoop]: Abstraction has 4315 states and 5611 transitions. [2020-09-25 13:35:56,319 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 13:35:56,319 INFO L276 IsEmpty]: Start isEmpty. Operand 4315 states and 5611 transitions. [2020-09-25 13:35:56,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2020-09-25 13:35:56,330 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:35:56,330 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, 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, 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] [2020-09-25 13:35:56,330 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 13:35:56,330 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:35:56,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:35:56,331 INFO L82 PathProgramCache]: Analyzing trace with hash -1155493918, now seen corresponding path program 1 times [2020-09-25 13:35:56,331 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:35:56,331 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [176244670] [2020-09-25 13:35:56,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:35:56,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:56,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:56,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:56,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:56,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:01,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:01,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:01,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 276 [2020-09-25 13:36:01,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 13:36:01,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5076 [2020-09-25 13:36:01,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:01,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:01,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:36:01,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 121 [2020-09-25 13:36:01,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-09-25 13:36:01,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:36:01,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:36:01,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:01,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:01,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:01,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:36:01,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:36:01,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:36:01,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:01,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:01,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:36:01,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:36:01,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:36:01,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:36:01,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:36:01,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:01,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:01,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:01,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-25 13:36:01,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:36:01,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-09-25 13:36:01,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:01,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:01,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:36:01,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:36:01,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-09-25 13:36:01,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:36:01,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-09-25 13:36:01,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:01,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:01,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:01,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-09-25 13:36:01,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:36:01,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-09-25 13:36:01,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:01,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:01,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:36:01,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:36:01,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 13:36:01,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:36:01,925 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 181 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 13:36:01,926 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [176244670] [2020-09-25 13:36:01,926 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:36:01,926 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 13:36:01,927 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219192986] [2020-09-25 13:36:01,927 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:36:01,927 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:36:01,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:36:01,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:36:01,928 INFO L87 Difference]: Start difference. First operand 4315 states and 5611 transitions. Second operand 7 states. [2020-09-25 13:36:04,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:36:04,724 INFO L93 Difference]: Finished difference Result 9759 states and 12795 transitions. [2020-09-25 13:36:04,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 13:36:04,725 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 263 [2020-09-25 13:36:04,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:36:04,752 INFO L225 Difference]: With dead ends: 9759 [2020-09-25 13:36:04,752 INFO L226 Difference]: Without dead ends: 5459 [2020-09-25 13:36:04,765 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-25 13:36:04,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5459 states. [2020-09-25 13:36:04,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5459 to 5410. [2020-09-25 13:36:04,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5410 states. [2020-09-25 13:36:04,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5410 states to 5410 states and 7056 transitions. [2020-09-25 13:36:04,914 INFO L78 Accepts]: Start accepts. Automaton has 5410 states and 7056 transitions. Word has length 263 [2020-09-25 13:36:04,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:36:04,915 INFO L479 AbstractCegarLoop]: Abstraction has 5410 states and 7056 transitions. [2020-09-25 13:36:04,915 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 13:36:04,915 INFO L276 IsEmpty]: Start isEmpty. Operand 5410 states and 7056 transitions. [2020-09-25 13:36:04,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2020-09-25 13:36:04,928 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:36:04,929 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, 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] [2020-09-25 13:36:04,929 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 13:36:04,929 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:36:04,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:36:04,930 INFO L82 PathProgramCache]: Analyzing trace with hash -1306036851, now seen corresponding path program 1 times [2020-09-25 13:36:04,930 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:36:04,931 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [243646032] [2020-09-25 13:36:04,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:36:04,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:05,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:05,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:05,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking...