/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label08.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 07:52:54,535 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 07:52:54,539 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 07:52:54,586 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 07:52:54,587 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 07:52:54,588 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 07:52:54,589 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 07:52:54,591 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 07:52:54,593 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 07:52:54,594 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 07:52:54,595 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 07:52:54,597 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 07:52:54,597 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 07:52:54,598 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 07:52:54,599 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 07:52:54,601 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 07:52:54,602 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 07:52:54,603 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 07:52:54,605 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 07:52:54,607 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 07:52:54,609 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 07:52:54,610 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 07:52:54,612 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 07:52:54,613 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 07:52:54,616 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 07:52:54,616 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 07:52:54,616 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 07:52:54,617 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 07:52:54,618 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 07:52:54,619 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 07:52:54,619 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 07:52:54,620 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 07:52:54,621 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 07:52:54,622 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 07:52:54,623 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 07:52:54,623 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 07:52:54,624 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 07:52:54,624 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 07:52:54,625 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 07:52:54,626 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 07:52:54,627 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 07:52:54,628 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 07:52:54,655 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 07:52:54,655 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 07:52:54,657 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 07:52:54,657 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 07:52:54,657 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 07:52:54,657 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 07:52:54,657 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 07:52:54,658 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 07:52:54,658 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 07:52:54,658 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 07:52:54,658 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 07:52:54,658 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 07:52:54,659 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 07:52:54,659 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 07:52:54,659 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 07:52:54,659 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 07:52:54,659 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 07:52:54,660 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 07:52:54,660 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 07:52:54,660 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 07:52:54,660 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 07:52:54,661 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:52:54,661 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 07:52:54,661 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 07:52:54,661 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 07:52:54,661 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 07:52:54,662 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 07:52:54,662 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 07:52:54,662 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 07:52:54,662 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; [2020-09-25 07:52:55,109 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 07:52:55,126 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 07:52:55,131 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 07:52:55,133 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 07:52:55,133 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 07:52:55,134 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label08.c [2020-09-25 07:52:55,226 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/302bbcdc3/308bda2e3ac04cc8aa0ad8a492c0d7af/FLAG1ee2c2c27 [2020-09-25 07:52:55,913 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 07:52:55,914 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label08.c [2020-09-25 07:52:55,926 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/302bbcdc3/308bda2e3ac04cc8aa0ad8a492c0d7af/FLAG1ee2c2c27 [2020-09-25 07:52:56,115 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/302bbcdc3/308bda2e3ac04cc8aa0ad8a492c0d7af [2020-09-25 07:52:56,128 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 07:52:56,133 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 07:52:56,134 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 07:52:56,134 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 07:52:56,139 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 07:52:56,140 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:52:56" (1/1) ... [2020-09-25 07:52:56,145 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d876c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:56, skipping insertion in model container [2020-09-25 07:52:56,145 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:52:56" (1/1) ... [2020-09-25 07:52:56,157 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 07:52:56,214 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 07:52:56,667 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:52:56,674 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 07:52:56,938 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:52:56,970 INFO L208 MainTranslator]: Completed translation [2020-09-25 07:52:56,971 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:56 WrapperNode [2020-09-25 07:52:56,971 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 07:52:56,972 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 07:52:56,972 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 07:52:56,972 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 07:52:56,990 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:56" (1/1) ... [2020-09-25 07:52:56,991 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:56" (1/1) ... [2020-09-25 07:52:57,013 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:56" (1/1) ... [2020-09-25 07:52:57,013 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:56" (1/1) ... [2020-09-25 07:52:57,051 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:56" (1/1) ... [2020-09-25 07:52:57,070 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:56" (1/1) ... [2020-09-25 07:52:57,077 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:56" (1/1) ... [2020-09-25 07:52:57,084 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 07:52:57,084 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 07:52:57,085 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 07:52:57,085 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 07:52:57,086 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:56" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:52:57,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 07:52:57,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 07:52:57,169 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 07:52:57,170 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 07:52:57,170 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 07:52:57,170 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 07:52:57,170 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 07:52:57,170 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 07:52:57,170 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 07:52:57,171 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 07:52:57,171 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 07:52:58,483 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 07:52:58,483 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 07:52:58,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:52:58 BoogieIcfgContainer [2020-09-25 07:52:58,493 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 07:52:58,495 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 07:52:58,495 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 07:52:58,499 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 07:52:58,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 07:52:56" (1/3) ... [2020-09-25 07:52:58,501 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bb4822a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:52:58, skipping insertion in model container [2020-09-25 07:52:58,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:56" (2/3) ... [2020-09-25 07:52:58,501 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bb4822a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:52:58, skipping insertion in model container [2020-09-25 07:52:58,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:52:58" (3/3) ... [2020-09-25 07:52:58,504 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label08.c [2020-09-25 07:52:58,516 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 07:52:58,528 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 07:52:58,551 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 07:52:58,588 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 07:52:58,588 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 07:52:58,588 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 07:52:58,588 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 07:52:58,589 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 07:52:58,589 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 07:52:58,589 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 07:52:58,589 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 07:52:58,623 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 07:52:58,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-09-25 07:52:58,645 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:52:58,647 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:52:58,647 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:52:58,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:52:58,656 INFO L82 PathProgramCache]: Analyzing trace with hash 524055129, now seen corresponding path program 1 times [2020-09-25 07:52:58,668 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:52:58,668 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1087928403] [2020-09-25 07:52:58,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:52:58,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:59,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:59,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:59,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:00,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:00,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:01,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:02,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:03,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:03,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:03,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:53:03,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-09-25 07:53:03,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 07:53:03,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-25 07:53:03,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:53:03,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:53:03,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:53:03,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 07:53:03,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-09-25 07:53:03,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 07:53:04,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:53:04,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:53:04,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:04,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:53:04,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:53:04,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:53:04,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 07:53:04,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:53:04,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:53:04,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:53:04,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:53:04,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 07:53:04,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:53:04,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:53:04,281 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1087928403] [2020-09-25 07:53:04,284 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:53:04,284 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 07:53:04,285 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116307580] [2020-09-25 07:53:04,294 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 07:53:04,294 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:53:04,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 07:53:04,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 07:53:04,321 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 07:53:06,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:53:06,797 INFO L93 Difference]: Finished difference Result 1386 states and 1837 transitions. [2020-09-25 07:53:06,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 07:53:06,799 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2020-09-25 07:53:06,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:53:06,829 INFO L225 Difference]: With dead ends: 1386 [2020-09-25 07:53:06,830 INFO L226 Difference]: Without dead ends: 787 [2020-09-25 07:53:06,842 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:53:06,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2020-09-25 07:53:06,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 733. [2020-09-25 07:53:06,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 733 states. [2020-09-25 07:53:06,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 884 transitions. [2020-09-25 07:53:06,971 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 884 transitions. Word has length 148 [2020-09-25 07:53:06,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:53:06,972 INFO L479 AbstractCegarLoop]: Abstraction has 733 states and 884 transitions. [2020-09-25 07:53:06,972 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 07:53:06,973 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 884 transitions. [2020-09-25 07:53:06,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-09-25 07:53:06,981 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:53:06,982 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:53:06,982 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 07:53:06,982 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:53:06,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:53:06,983 INFO L82 PathProgramCache]: Analyzing trace with hash 2109946541, now seen corresponding path program 1 times [2020-09-25 07:53:06,983 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:53:06,984 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1228125755] [2020-09-25 07:53:06,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:53:07,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:53:07,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:07,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:07,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:07,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:07,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:08,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:09,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:09,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:09,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:11,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:11,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:11,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:12,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:53:12,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-09-25 07:53:12,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 07:53:12,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 07:53:12,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:53:12,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:53:12,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:53:12,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 07:53:12,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-09-25 07:53:12,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 07:53:12,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:53:12,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:53:12,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:12,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:53:12,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:53:12,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:53:12,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 07:53:12,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:53:12,217 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:53:12,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:53:12,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:53:12,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:53:12,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:53:12,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 07:53:12,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:53:12,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:12,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:53:12,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 07:53:12,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:53:12,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 07:53:12,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:53:12,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:53:12,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:53:12,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:53:12,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 07:53:12,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:53:12,302 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:53:12,303 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1228125755] [2020-09-25 07:53:12,303 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:53:12,304 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 07:53:12,304 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542827194] [2020-09-25 07:53:12,306 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:53:12,307 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:53:12,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:53:12,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:53:12,307 INFO L87 Difference]: Start difference. First operand 733 states and 884 transitions. Second operand 5 states. [2020-09-25 07:53:14,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:53:14,274 INFO L93 Difference]: Finished difference Result 1753 states and 2209 transitions. [2020-09-25 07:53:14,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 07:53:14,275 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 166 [2020-09-25 07:53:14,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:53:14,284 INFO L225 Difference]: With dead ends: 1753 [2020-09-25 07:53:14,284 INFO L226 Difference]: Without dead ends: 1042 [2020-09-25 07:53:14,287 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 07:53:14,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1042 states. [2020-09-25 07:53:14,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1042 to 881. [2020-09-25 07:53:14,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 881 states. [2020-09-25 07:53:14,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 881 states to 881 states and 1094 transitions. [2020-09-25 07:53:14,328 INFO L78 Accepts]: Start accepts. Automaton has 881 states and 1094 transitions. Word has length 166 [2020-09-25 07:53:14,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:53:14,329 INFO L479 AbstractCegarLoop]: Abstraction has 881 states and 1094 transitions. [2020-09-25 07:53:14,329 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:53:14,329 INFO L276 IsEmpty]: Start isEmpty. Operand 881 states and 1094 transitions. [2020-09-25 07:53:14,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-09-25 07:53:14,334 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:53:14,334 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:53:14,335 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 07:53:14,335 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:53:14,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:53:14,335 INFO L82 PathProgramCache]: Analyzing trace with hash -2122100332, now seen corresponding path program 1 times [2020-09-25 07:53:14,336 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:53:14,336 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [315210317] [2020-09-25 07:53:14,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:53:14,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:53:14,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:14,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:14,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:15,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:17,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:17,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:19,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:53:19,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-09-25 07:53:19,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 07:53:19,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 07:53:19,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:53:19,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:53:19,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:53:19,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-09-25 07:53:19,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-09-25 07:53:19,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:53:19,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:53:19,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:53:19,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:19,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:53:19,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:53:19,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:53:19,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 07:53:19,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:53:19,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:53:19,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:53:19,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:53:19,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:53:19,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:53:19,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 07:53:19,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:53:19,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:19,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:53:19,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 07:53:19,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:53:19,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-25 07:53:19,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:53:19,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:53:19,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:53:19,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:53:19,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 07:53:19,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 07:53:19,701 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:53:19,701 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [315210317] [2020-09-25 07:53:19,702 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:53:19,702 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 07:53:19,703 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705814761] [2020-09-25 07:53:19,704 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:53:19,705 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:53:19,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:53:19,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:53:19,706 INFO L87 Difference]: Start difference. First operand 881 states and 1094 transitions. Second operand 5 states. [2020-09-25 07:53:21,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:53:21,875 INFO L93 Difference]: Finished difference Result 2227 states and 2891 transitions. [2020-09-25 07:53:21,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 07:53:21,876 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 182 [2020-09-25 07:53:21,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:53:21,885 INFO L225 Difference]: With dead ends: 2227 [2020-09-25 07:53:21,885 INFO L226 Difference]: Without dead ends: 1368 [2020-09-25 07:53:21,889 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 07:53:21,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1368 states. [2020-09-25 07:53:21,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1368 to 1339. [2020-09-25 07:53:21,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1339 states. [2020-09-25 07:53:21,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1339 states to 1339 states and 1738 transitions. [2020-09-25 07:53:21,939 INFO L78 Accepts]: Start accepts. Automaton has 1339 states and 1738 transitions. Word has length 182 [2020-09-25 07:53:21,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:53:21,939 INFO L479 AbstractCegarLoop]: Abstraction has 1339 states and 1738 transitions. [2020-09-25 07:53:21,939 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:53:21,939 INFO L276 IsEmpty]: Start isEmpty. Operand 1339 states and 1738 transitions. [2020-09-25 07:53:21,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2020-09-25 07:53:21,949 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:53:21,949 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:53:21,949 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 07:53:21,950 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:53:21,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:53:21,950 INFO L82 PathProgramCache]: Analyzing trace with hash 201500591, now seen corresponding path program 1 times [2020-09-25 07:53:21,950 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:53:21,951 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2106907908] [2020-09-25 07:53:21,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:53:22,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:53:22,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:22,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:22,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:23,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:23,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:25,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:27,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:53:27,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 284 [2020-09-25 07:53:27,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 07:53:27,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-09-25 07:53:27,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:53:27,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:53:27,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:53:27,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-09-25 07:53:27,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 224 [2020-09-25 07:53:27,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:53:27,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:53:27,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:53:27,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:27,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:53:27,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:53:27,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:53:27,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 07:53:27,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:53:27,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:53:27,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:53:27,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:53:27,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:53:27,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:53:27,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 07:53:27,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:53:27,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:27,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:53:27,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 07:53:27,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:53:27,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-25 07:53:27,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:53:27,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:53:27,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:53:27,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:53:27,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 07:53:27,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:53:27,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-25 07:53:27,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:53:27,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:27,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:27,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:27,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:53:27,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 07:53:27,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 07:53:27,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 217 [2020-09-25 07:53:27,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:53:27,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:53:27,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:53:27,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:53:27,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-09-25 07:53:27,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:53:27,656 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 52 proven. 72 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 07:53:27,657 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2106907908] [2020-09-25 07:53:27,657 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:53:27,657 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 07:53:27,658 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292159526] [2020-09-25 07:53:27,658 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:53:27,659 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:53:27,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:53:27,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:53:27,659 INFO L87 Difference]: Start difference. First operand 1339 states and 1738 transitions. Second operand 7 states. [2020-09-25 07:53:31,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:53:31,258 INFO L93 Difference]: Finished difference Result 4065 states and 5661 transitions. [2020-09-25 07:53:31,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 07:53:31,259 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 271 [2020-09-25 07:53:31,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:53:31,286 INFO L225 Difference]: With dead ends: 4065 [2020-09-25 07:53:31,286 INFO L226 Difference]: Without dead ends: 2748 [2020-09-25 07:53:31,295 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 07:53:31,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2748 states. [2020-09-25 07:53:31,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2748 to 2516. [2020-09-25 07:53:31,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2516 states. [2020-09-25 07:53:31,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2516 states to 2516 states and 3268 transitions. [2020-09-25 07:53:31,420 INFO L78 Accepts]: Start accepts. Automaton has 2516 states and 3268 transitions. Word has length 271 [2020-09-25 07:53:31,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:53:31,421 INFO L479 AbstractCegarLoop]: Abstraction has 2516 states and 3268 transitions. [2020-09-25 07:53:31,421 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:53:31,421 INFO L276 IsEmpty]: Start isEmpty. Operand 2516 states and 3268 transitions. [2020-09-25 07:53:31,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2020-09-25 07:53:31,436 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:53:31,436 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:53:31,437 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 07:53:31,437 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:53:31,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:53:31,437 INFO L82 PathProgramCache]: Analyzing trace with hash -1915866502, now seen corresponding path program 1 times [2020-09-25 07:53:31,438 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:53:31,438 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [136382472] [2020-09-25 07:53:31,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:53:31,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:53:31,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:31,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:31,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:33,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:33,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:53:33,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 304 [2020-09-25 07:53:33,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 07:53:33,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2221 [2020-09-25 07:53:33,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:53:33,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:53:33,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:53:33,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-09-25 07:53:33,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 221 [2020-09-25 07:53:33,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:53:33,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:53:33,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:53:33,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:33,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:53:33,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:53:33,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:53:33,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 07:53:33,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:53:33,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:53:33,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:53:33,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:53:33,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:53:33,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 07:53:33,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 07:53:33,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:53:33,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:33,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:53:33,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:53:33,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:53:33,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 07:53:33,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:53:33,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:53:33,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:53:33,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:53:33,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:53:33,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:53:33,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-25 07:53:33,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:53:33,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:33,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:53:33,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 07:53:33,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:53:33,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 07:53:33,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:53:33,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:53:33,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:53:33,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:53:33,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 07:53:33,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:53:33,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-25 07:53:33,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:53:33,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:34,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:34,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:53:34,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 07:53:34,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:53:34,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 230 [2020-09-25 07:53:34,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:53:34,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:53:34,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:53:34,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:53:34,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-09-25 07:53:34,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:53:34,340 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 80 proven. 73 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-09-25 07:53:34,341 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [136382472] [2020-09-25 07:53:34,341 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:53:34,341 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 07:53:34,342 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987627389] [2020-09-25 07:53:34,342 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 07:53:34,342 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:53:34,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 07:53:34,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-25 07:53:34,343 INFO L87 Difference]: Start difference. First operand 2516 states and 3268 transitions. Second operand 6 states. [2020-09-25 07:53:36,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:53:36,812 INFO L93 Difference]: Finished difference Result 6413 states and 8659 transitions. [2020-09-25 07:53:36,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 07:53:36,812 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 289 [2020-09-25 07:53:36,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:53:36,836 INFO L225 Difference]: With dead ends: 6413 [2020-09-25 07:53:36,836 INFO L226 Difference]: Without dead ends: 3929 [2020-09-25 07:53:36,846 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 07:53:36,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3929 states. [2020-09-25 07:53:36,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3929 to 3406. [2020-09-25 07:53:36,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3406 states. [2020-09-25 07:53:36,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3406 states to 3406 states and 4350 transitions. [2020-09-25 07:53:36,953 INFO L78 Accepts]: Start accepts. Automaton has 3406 states and 4350 transitions. Word has length 289 [2020-09-25 07:53:36,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:53:36,953 INFO L479 AbstractCegarLoop]: Abstraction has 3406 states and 4350 transitions. [2020-09-25 07:53:36,954 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 07:53:36,954 INFO L276 IsEmpty]: Start isEmpty. Operand 3406 states and 4350 transitions. [2020-09-25 07:53:36,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2020-09-25 07:53:36,971 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:53:36,971 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:53:36,972 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 07:53:36,972 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:53:36,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:53:36,972 INFO L82 PathProgramCache]: Analyzing trace with hash 760350118, now seen corresponding path program 1 times [2020-09-25 07:53:36,972 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:53:36,973 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [190695029] [2020-09-25 07:53:36,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:53:37,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:53:37,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:37,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:37,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:37,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:38,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:38,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:39,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:42,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:53:42,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 327 [2020-09-25 07:53:42,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 07:53:42,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-09-25 07:53:42,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:53:42,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:53:42,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:53:42,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 102 [2020-09-25 07:53:42,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-09-25 07:53:42,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:53:42,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:53:42,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:53:42,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:42,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:53:42,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:53:42,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:53:42,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 07:53:42,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:53:42,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:53:42,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:53:42,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:53:42,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:53:42,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:53:42,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 07:53:42,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:53:42,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:42,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:53:42,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-25 07:53:42,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:53:42,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-09-25 07:53:42,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:53:42,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:53:42,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:53:42,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:53:42,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 07:53:42,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 07:53:42,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-09-25 07:53:42,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:53:42,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:42,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:53:42,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 07:53:42,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:53:42,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-09-25 07:53:42,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:53:42,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:53:42,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:53:42,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:53:42,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-09-25 07:53:42,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:53:42,647 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 216 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 07:53:42,647 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [190695029] [2020-09-25 07:53:42,648 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:53:42,649 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 07:53:42,649 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701848397] [2020-09-25 07:53:42,650 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:53:42,650 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:53:42,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:53:42,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:53:42,651 INFO L87 Difference]: Start difference. First operand 3406 states and 4350 transitions. Second operand 7 states.