/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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_label03.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 06:46:30,402 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 06:46:30,406 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 06:46:30,440 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 06:46:30,441 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 06:46:30,454 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 06:46:30,455 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 06:46:30,458 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 06:46:30,462 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 06:46:30,463 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 06:46:30,466 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 06:46:30,469 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 06:46:30,469 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 06:46:30,472 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 06:46:30,477 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 06:46:30,480 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 06:46:30,481 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 06:46:30,482 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 06:46:30,484 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 06:46:30,486 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 06:46:30,487 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 06:46:30,489 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 06:46:30,490 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 06:46:30,491 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 06:46:30,494 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 06:46:30,494 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 06:46:30,494 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 06:46:30,495 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 06:46:30,496 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 06:46:30,497 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 06:46:30,497 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 06:46:30,498 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 06:46:30,499 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 06:46:30,500 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 06:46:30,502 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 06:46:30,502 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 06:46:30,503 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 06:46:30,503 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 06:46:30,503 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 06:46:30,504 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 06:46:30,505 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 06:46:30,506 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 06:46:30,533 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 06:46:30,534 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 06:46:30,535 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 06:46:30,536 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 06:46:30,536 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 06:46:30,536 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 06:46:30,536 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 06:46:30,537 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 06:46:30,537 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 06:46:30,537 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 06:46:30,537 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 06:46:30,537 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 06:46:30,538 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 06:46:30,538 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 06:46:30,538 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 06:46:30,538 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 06:46:30,538 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 06:46:30,539 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 06:46:30,539 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 06:46:30,539 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 06:46:30,539 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 06:46:30,539 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:46:30,540 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 06:46:30,540 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 06:46:30,540 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 06:46:30,540 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 06:46:30,540 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 06:46:30,541 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 06:46:30,541 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 06:46:30,541 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; [2020-09-25 06:46:31,004 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 06:46:31,036 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 06:46:31,042 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 06:46:31,044 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 06:46:31,045 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 06:46:31,046 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label03.c [2020-09-25 06:46:31,155 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d905a469b/a62f67bbe5de47f48074a66be0d458f7/FLAGb4cf062f1 [2020-09-25 06:46:31,868 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 06:46:31,868 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label03.c [2020-09-25 06:46:31,898 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d905a469b/a62f67bbe5de47f48074a66be0d458f7/FLAGb4cf062f1 [2020-09-25 06:46:32,059 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d905a469b/a62f67bbe5de47f48074a66be0d458f7 [2020-09-25 06:46:32,074 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 06:46:32,079 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 06:46:32,081 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 06:46:32,081 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 06:46:32,085 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 06:46:32,086 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:46:32" (1/1) ... [2020-09-25 06:46:32,091 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@347c51ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:46:32, skipping insertion in model container [2020-09-25 06:46:32,091 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:46:32" (1/1) ... [2020-09-25 06:46:32,100 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 06:46:32,157 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 06:46:32,643 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:46:32,655 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 06:46:32,870 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:46:32,893 INFO L208 MainTranslator]: Completed translation [2020-09-25 06:46:32,895 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:46:32 WrapperNode [2020-09-25 06:46:32,895 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 06:46:32,896 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 06:46:32,896 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 06:46:32,896 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 06:46:32,912 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:46:32" (1/1) ... [2020-09-25 06:46:32,913 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:46:32" (1/1) ... [2020-09-25 06:46:32,932 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:46:32" (1/1) ... [2020-09-25 06:46:32,933 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:46:32" (1/1) ... [2020-09-25 06:46:32,970 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:46:32" (1/1) ... [2020-09-25 06:46:32,987 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:46:32" (1/1) ... [2020-09-25 06:46:32,995 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:46:32" (1/1) ... [2020-09-25 06:46:33,007 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 06:46:33,008 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 06:46:33,008 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 06:46:33,009 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 06:46:33,010 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:46:32" (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 06:46:33,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 06:46:33,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 06:46:33,115 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 06:46:33,115 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 06:46:33,115 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 06:46:33,116 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 06:46:33,116 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 06:46:33,116 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 06:46:33,116 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 06:46:33,116 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 06:46:33,117 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 06:46:34,652 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 06:46:34,652 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 06:46:34,667 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:46:34 BoogieIcfgContainer [2020-09-25 06:46:34,668 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 06:46:34,672 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 06:46:34,672 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 06:46:34,676 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 06:46:34,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 06:46:32" (1/3) ... [2020-09-25 06:46:34,678 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b01f935 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:46:34, skipping insertion in model container [2020-09-25 06:46:34,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:46:32" (2/3) ... [2020-09-25 06:46:34,679 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b01f935 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:46:34, skipping insertion in model container [2020-09-25 06:46:34,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:46:34" (3/3) ... [2020-09-25 06:46:34,683 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label03.c [2020-09-25 06:46:34,695 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 06:46:34,709 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 06:46:34,732 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 06:46:34,776 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 06:46:34,777 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 06:46:34,778 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 06:46:34,778 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 06:46:34,778 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 06:46:34,778 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 06:46:34,778 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 06:46:34,779 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 06:46:34,810 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 06:46:34,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-09-25 06:46:34,821 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:46:34,822 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] [2020-09-25 06:46:34,823 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:46:34,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:46:34,831 INFO L82 PathProgramCache]: Analyzing trace with hash 1813443015, now seen corresponding path program 1 times [2020-09-25 06:46:34,841 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:46:34,842 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [214183840] [2020-09-25 06:46:34,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:46:35,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:35,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:35,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:35,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:36,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:36,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-25 06:46:36,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 06:46:36,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1357 [2020-09-25 06:46:36,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:36,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:36,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:46:36,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 06:46:36,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 06:46:36,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 06:46:36,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:46:36,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:36,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:36,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:36,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:46:36,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:36,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 06:46:36,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:36,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:36,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:46:36,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:46:36,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 06:46:36,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:36,559 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 06:46:36,560 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [214183840] [2020-09-25 06:46:36,562 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:46:36,563 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 06:46:36,564 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849460060] [2020-09-25 06:46:36,571 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:46:36,571 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:46:36,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:46:36,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:46:36,594 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 5 states. [2020-09-25 06:46:39,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:46:39,876 INFO L93 Difference]: Finished difference Result 1358 states and 1918 transitions. [2020-09-25 06:46:39,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 06:46:39,880 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 55 [2020-09-25 06:46:39,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:46:39,928 INFO L225 Difference]: With dead ends: 1358 [2020-09-25 06:46:39,929 INFO L226 Difference]: Without dead ends: 812 [2020-09-25 06:46:39,940 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:46:39,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2020-09-25 06:46:40,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 738. [2020-09-25 06:46:40,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 738 states. [2020-09-25 06:46:40,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 928 transitions. [2020-09-25 06:46:40,063 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 928 transitions. Word has length 55 [2020-09-25 06:46:40,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:46:40,064 INFO L479 AbstractCegarLoop]: Abstraction has 738 states and 928 transitions. [2020-09-25 06:46:40,064 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:46:40,065 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 928 transitions. [2020-09-25 06:46:40,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-09-25 06:46:40,073 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:46:40,074 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:46:40,074 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 06:46:40,074 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:46:40,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:46:40,075 INFO L82 PathProgramCache]: Analyzing trace with hash -226140616, now seen corresponding path program 1 times [2020-09-25 06:46:40,075 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:46:40,076 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [114623346] [2020-09-25 06:46:40,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:46:40,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:40,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:40,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:40,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:40,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:40,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:43,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:43,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-09-25 06:46:43,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 06:46:43,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3098 [2020-09-25 06:46:43,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:43,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:43,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:46:43,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 06:46:43,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 06:46:43,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:43,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:46:43,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:43,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:43,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:43,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:46:43,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:43,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 06:46:43,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:43,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:43,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:46:43,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:46:43,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:46:43,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:43,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:46:43,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:43,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:43,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:43,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 06:46:43,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:43,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-09-25 06:46:43,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:43,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:43,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:46:43,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:46:43,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 06:46:43,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:43,527 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 38 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:46:43,528 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [114623346] [2020-09-25 06:46:43,528 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:46:43,529 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 06:46:43,529 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765089680] [2020-09-25 06:46:43,531 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:46:43,532 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:46:43,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:46:43,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:46:43,532 INFO L87 Difference]: Start difference. First operand 738 states and 928 transitions. Second operand 5 states. [2020-09-25 06:46:45,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:46:45,382 INFO L93 Difference]: Finished difference Result 1762 states and 2316 transitions. [2020-09-25 06:46:45,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:46:45,383 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 134 [2020-09-25 06:46:45,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:46:45,391 INFO L225 Difference]: With dead ends: 1762 [2020-09-25 06:46:45,391 INFO L226 Difference]: Without dead ends: 1039 [2020-09-25 06:46:45,395 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 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 06:46:45,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1039 states. [2020-09-25 06:46:45,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1039 to 1039. [2020-09-25 06:46:45,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1039 states. [2020-09-25 06:46:45,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1039 states to 1039 states and 1333 transitions. [2020-09-25 06:46:45,441 INFO L78 Accepts]: Start accepts. Automaton has 1039 states and 1333 transitions. Word has length 134 [2020-09-25 06:46:45,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:46:45,442 INFO L479 AbstractCegarLoop]: Abstraction has 1039 states and 1333 transitions. [2020-09-25 06:46:45,442 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:46:45,442 INFO L276 IsEmpty]: Start isEmpty. Operand 1039 states and 1333 transitions. [2020-09-25 06:46:45,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-09-25 06:46:45,450 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:46:45,451 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:46:45,451 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 06:46:45,451 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:46:45,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:46:45,452 INFO L82 PathProgramCache]: Analyzing trace with hash -58375918, now seen corresponding path program 1 times [2020-09-25 06:46:45,452 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:46:45,452 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [210814130] [2020-09-25 06:46:45,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:46:45,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:45,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:45,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:45,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:48,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:48,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-09-25 06:46:48,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 06:46:48,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2528 [2020-09-25 06:46:48,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:48,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:48,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:46:48,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 06:46:48,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 06:46:48,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:48,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:46:48,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:48,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:48,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:48,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:46:48,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:48,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 06:46:48,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:48,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:48,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:46:48,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:46:48,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 06:46:48,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:48,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:46:48,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:48,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:48,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:48,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 06:46:48,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:48,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-09-25 06:46:48,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:48,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:48,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:46:48,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:46:48,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 06:46:48,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:48,454 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:46:48,455 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [210814130] [2020-09-25 06:46:48,455 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:46:48,455 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 06:46:48,456 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361724308] [2020-09-25 06:46:48,457 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 06:46:48,458 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:46:48,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 06:46:48,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 06:46:48,459 INFO L87 Difference]: Start difference. First operand 1039 states and 1333 transitions. Second operand 8 states. [2020-09-25 06:46:51,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:46:51,105 INFO L93 Difference]: Finished difference Result 3170 states and 4391 transitions. [2020-09-25 06:46:51,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 06:46:51,107 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 146 [2020-09-25 06:46:51,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:46:51,125 INFO L225 Difference]: With dead ends: 3170 [2020-09-25 06:46:51,125 INFO L226 Difference]: Without dead ends: 2296 [2020-09-25 06:46:51,131 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-09-25 06:46:51,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2296 states. [2020-09-25 06:46:51,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2296 to 2272. [2020-09-25 06:46:51,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2272 states. [2020-09-25 06:46:51,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2272 states to 2272 states and 2900 transitions. [2020-09-25 06:46:51,224 INFO L78 Accepts]: Start accepts. Automaton has 2272 states and 2900 transitions. Word has length 146 [2020-09-25 06:46:51,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:46:51,226 INFO L479 AbstractCegarLoop]: Abstraction has 2272 states and 2900 transitions. [2020-09-25 06:46:51,226 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 06:46:51,227 INFO L276 IsEmpty]: Start isEmpty. Operand 2272 states and 2900 transitions. [2020-09-25 06:46:51,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-09-25 06:46:51,245 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:46:51,245 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, 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] [2020-09-25 06:46:51,246 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 06:46:51,248 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:46:51,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:46:51,248 INFO L82 PathProgramCache]: Analyzing trace with hash -442827895, now seen corresponding path program 1 times [2020-09-25 06:46:51,249 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:46:51,249 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1649955625] [2020-09-25 06:46:51,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:46:51,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:51,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:51,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:51,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:53,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:53,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:53,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:53,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:56,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:56,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:56,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 236 [2020-09-25 06:46:56,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 06:46:56,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-09-25 06:46:56,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:56,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:56,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:46:56,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 06:46:56,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-09-25 06:46:56,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-09-25 06:46:56,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:46:56,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:56,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:56,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:56,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:46:56,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:56,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 06:46:56,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:56,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:56,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:46:56,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:46:56,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:46:56,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:56,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:46:56,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:56,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:56,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:56,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 06:46:56,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:56,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-09-25 06:46:56,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:56,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:56,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:46:56,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:46:56,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 06:46:56,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:56,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 06:46:56,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:56,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:56,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:56,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 06:46:56,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:56,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-09-25 06:46:56,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:56,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:56,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:46:56,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:46:56,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 06:46:56,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:56,908 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 151 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:46:56,910 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1649955625] [2020-09-25 06:46:56,910 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:46:56,910 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 06:46:56,910 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434106066] [2020-09-25 06:46:56,912 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 06:46:56,912 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:46:56,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 06:46:56,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 06:46:56,913 INFO L87 Difference]: Start difference. First operand 2272 states and 2900 transitions. Second operand 8 states. [2020-09-25 06:47:00,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:47:00,335 INFO L93 Difference]: Finished difference Result 6615 states and 9054 transitions. [2020-09-25 06:47:00,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 06:47:00,336 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 223 [2020-09-25 06:47:00,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:47:00,367 INFO L225 Difference]: With dead ends: 6615 [2020-09-25 06:47:00,367 INFO L226 Difference]: Without dead ends: 4508 [2020-09-25 06:47:00,378 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-09-25 06:47:00,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4508 states. [2020-09-25 06:47:00,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4508 to 4311. [2020-09-25 06:47:00,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4311 states. [2020-09-25 06:47:00,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4311 states to 4311 states and 5801 transitions. [2020-09-25 06:47:00,555 INFO L78 Accepts]: Start accepts. Automaton has 4311 states and 5801 transitions. Word has length 223 [2020-09-25 06:47:00,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:47:00,556 INFO L479 AbstractCegarLoop]: Abstraction has 4311 states and 5801 transitions. [2020-09-25 06:47:00,556 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 06:47:00,556 INFO L276 IsEmpty]: Start isEmpty. Operand 4311 states and 5801 transitions. [2020-09-25 06:47:00,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-09-25 06:47:00,566 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:47:00,567 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, 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 06:47:00,567 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 06:47:00,568 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:47:00,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:47:00,568 INFO L82 PathProgramCache]: Analyzing trace with hash 373108045, now seen corresponding path program 1 times [2020-09-25 06:47:00,568 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:47:00,569 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1884895658] [2020-09-25 06:47:00,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:47:00,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:00,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:00,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:01,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:01,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:01,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:05,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:05,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:05,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 249 [2020-09-25 06:47:05,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 06:47:05,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-09-25 06:47:05,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:05,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:05,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:47:05,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-09-25 06:47:05,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 06:47:05,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:05,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:47:05,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:05,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:05,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:05,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:47:05,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:05,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 06:47:05,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:05,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:05,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:47:05,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:47:05,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:47:05,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:05,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:47:05,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:05,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:05,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:05,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 06:47:05,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:05,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-09-25 06:47:05,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:05,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:05,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:47:05,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:47:05,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 06:47:05,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 06:47:05,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 06:47:05,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:06,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:06,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:06,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 06:47:06,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:06,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-09-25 06:47:06,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:06,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:06,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:47:06,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:47:06,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-25 06:47:06,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:06,346 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 160 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:47:06,346 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1884895658] [2020-09-25 06:47:06,347 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:47:06,347 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 06:47:06,347 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576080194] [2020-09-25 06:47:06,348 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 06:47:06,348 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:47:06,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 06:47:06,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 06:47:06,349 INFO L87 Difference]: Start difference. First operand 4311 states and 5801 transitions. Second operand 8 states. [2020-09-25 06:47:09,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:47:09,223 INFO L93 Difference]: Finished difference Result 10001 states and 13726 transitions. [2020-09-25 06:47:09,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 06:47:09,224 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 236 [2020-09-25 06:47:09,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:47:09,256 INFO L225 Difference]: With dead ends: 10001 [2020-09-25 06:47:09,256 INFO L226 Difference]: Without dead ends: 5855 [2020-09-25 06:47:09,272 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-09-25 06:47:09,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5855 states. [2020-09-25 06:47:09,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5855 to 5531. [2020-09-25 06:47:09,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5531 states. [2020-09-25 06:47:09,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5531 states to 5531 states and 7164 transitions. [2020-09-25 06:47:09,419 INFO L78 Accepts]: Start accepts. Automaton has 5531 states and 7164 transitions. Word has length 236 [2020-09-25 06:47:09,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:47:09,420 INFO L479 AbstractCegarLoop]: Abstraction has 5531 states and 7164 transitions. [2020-09-25 06:47:09,420 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 06:47:09,420 INFO L276 IsEmpty]: Start isEmpty. Operand 5531 states and 7164 transitions. [2020-09-25 06:47:09,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2020-09-25 06:47:09,426 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:47:09,427 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, 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] [2020-09-25 06:47:09,427 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 06:47:09,428 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:47:09,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:47:09,428 INFO L82 PathProgramCache]: Analyzing trace with hash -1838480665, now seen corresponding path program 1 times [2020-09-25 06:47:09,428 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:47:09,429 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [58707390] [2020-09-25 06:47:09,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:47:09,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:09,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:09,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:09,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:09,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:10,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:12,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:14,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:14,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 259 [2020-09-25 06:47:14,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 06:47:14,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 06:47:14,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:14,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:14,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:47:14,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-09-25 06:47:14,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-09-25 06:47:14,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:47:14,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:47:14,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:14,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:14,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:14,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:47:14,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:14,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 06:47:14,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:14,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:14,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:47:14,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:47:14,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:47:14,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:14,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:47:14,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:14,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:14,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:14,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 06:47:14,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:14,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-09-25 06:47:14,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:14,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:14,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:47:14,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:47:14,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 06:47:14,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:14,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 06:47:14,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:14,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:14,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:14,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-25 06:47:14,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:14,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-09-25 06:47:14,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:14,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:14,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:47:14,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:47:14,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-25 06:47:14,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:15,186 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 160 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:47:15,187 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [58707390] [2020-09-25 06:47:15,189 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:47:15,189 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 06:47:15,190 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484690198] [2020-09-25 06:47:15,190 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:47:15,191 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:47:15,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:47:15,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:47:15,192 INFO L87 Difference]: Start difference. First operand 5531 states and 7164 transitions. Second operand 7 states. [2020-09-25 06:47:17,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:47:17,790 INFO L93 Difference]: Finished difference Result 11667 states and 15508 transitions. [2020-09-25 06:47:17,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 06:47:17,791 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 246 [2020-09-25 06:47:17,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:47:17,817 INFO L225 Difference]: With dead ends: 11667 [2020-09-25 06:47:17,817 INFO L226 Difference]: Without dead ends: 4407 [2020-09-25 06:47:17,841 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 06:47:17,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4407 states. [2020-09-25 06:47:17,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4407 to 4097. [2020-09-25 06:47:17,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4097 states. [2020-09-25 06:47:17,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4097 states to 4097 states and 4922 transitions. [2020-09-25 06:47:17,965 INFO L78 Accepts]: Start accepts. Automaton has 4097 states and 4922 transitions. Word has length 246 [2020-09-25 06:47:17,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:47:17,966 INFO L479 AbstractCegarLoop]: Abstraction has 4097 states and 4922 transitions. [2020-09-25 06:47:17,966 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:47:17,966 INFO L276 IsEmpty]: Start isEmpty. Operand 4097 states and 4922 transitions. [2020-09-25 06:47:17,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2020-09-25 06:47:17,973 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:47:17,974 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, 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, 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] [2020-09-25 06:47:17,974 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 06:47:17,974 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:47:17,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:47:17,975 INFO L82 PathProgramCache]: Analyzing trace with hash -95692249, now seen corresponding path program 1 times [2020-09-25 06:47:17,975 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:47:17,975 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [105056240] [2020-09-25 06:47:17,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:47:18,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:18,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:18,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:18,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking...