/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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_label11.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 12:26:15,024 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:26:15,029 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:26:15,075 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:26:15,076 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:26:15,079 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:26:15,080 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:26:15,086 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:26:15,088 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:26:15,089 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:26:15,090 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:26:15,091 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:26:15,091 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:26:15,092 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:26:15,094 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:26:15,095 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:26:15,096 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:26:15,097 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:26:15,099 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:26:15,100 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:26:15,102 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:26:15,103 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:26:15,104 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:26:15,105 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:26:15,108 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:26:15,108 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:26:15,108 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:26:15,110 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:26:15,110 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:26:15,111 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:26:15,111 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:26:15,112 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:26:15,113 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:26:15,114 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:26:15,115 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:26:15,115 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:26:15,116 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:26:15,116 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:26:15,117 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:26:15,118 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:26:15,119 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:26:15,119 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 12:26:15,145 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:26:15,145 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:26:15,146 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:26:15,146 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:26:15,147 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:26:15,147 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:26:15,147 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:26:15,147 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:26:15,147 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:26:15,148 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:26:15,148 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:26:15,148 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:26:15,148 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:26:15,148 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:26:15,149 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:26:15,149 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:26:15,149 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:26:15,149 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:26:15,149 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:26:15,150 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:26:15,150 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:26:15,150 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:26:15,150 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:26:15,150 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:26:15,151 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:26:15,151 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:26:15,151 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:26:15,151 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:26:15,151 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:26:15,152 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; [2020-09-25 12:26:15,618 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:26:15,636 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:26:15,641 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:26:15,643 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:26:15,645 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:26:15,646 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label11.c [2020-09-25 12:26:15,729 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/06629503d/7e174f076ae84eeb95f4969a19714789/FLAGc0d900a90 [2020-09-25 12:26:16,425 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:26:16,426 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label11.c [2020-09-25 12:26:16,449 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/06629503d/7e174f076ae84eeb95f4969a19714789/FLAGc0d900a90 [2020-09-25 12:26:16,614 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/06629503d/7e174f076ae84eeb95f4969a19714789 [2020-09-25 12:26:16,630 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:26:16,639 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:26:16,641 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:26:16,641 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:26:16,645 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:26:16,647 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:26:16" (1/1) ... [2020-09-25 12:26:16,652 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4164e930 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:16, skipping insertion in model container [2020-09-25 12:26:16,652 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:26:16" (1/1) ... [2020-09-25 12:26:16,663 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:26:16,717 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:26:17,216 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:26:17,223 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:26:17,474 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:26:17,506 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:26:17,507 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:17 WrapperNode [2020-09-25 12:26:17,507 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:26:17,508 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:26:17,508 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:26:17,508 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:26:17,522 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:17" (1/1) ... [2020-09-25 12:26:17,522 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:17" (1/1) ... [2020-09-25 12:26:17,541 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:17" (1/1) ... [2020-09-25 12:26:17,542 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:17" (1/1) ... [2020-09-25 12:26:17,580 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:17" (1/1) ... [2020-09-25 12:26:17,598 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:17" (1/1) ... [2020-09-25 12:26:17,605 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:17" (1/1) ... [2020-09-25 12:26:17,615 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:26:17,615 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:26:17,615 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:26:17,616 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:26:17,617 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:17" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:26:17,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:26:17,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:26:17,711 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 12:26:17,711 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:26:17,711 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 12:26:17,712 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:26:17,713 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 12:26:17,714 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 12:26:17,714 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:26:17,714 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:26:17,715 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:26:19,287 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:26:19,288 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 12:26:19,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:26:19 BoogieIcfgContainer [2020-09-25 12:26:19,297 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:26:19,298 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:26:19,299 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:26:19,303 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:26:19,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:26:16" (1/3) ... [2020-09-25 12:26:19,304 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ee0c8cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:26:19, skipping insertion in model container [2020-09-25 12:26:19,305 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:17" (2/3) ... [2020-09-25 12:26:19,305 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ee0c8cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:26:19, skipping insertion in model container [2020-09-25 12:26:19,305 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:26:19" (3/3) ... [2020-09-25 12:26:19,308 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label11.c [2020-09-25 12:26:19,319 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:26:19,331 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:26:19,355 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:26:19,390 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:26:19,390 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:26:19,390 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:26:19,390 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:26:19,391 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:26:19,391 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:26:19,391 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:26:19,391 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:26:19,430 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 12:26:19,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-09-25 12:26:19,448 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:26:19,449 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] [2020-09-25 12:26:19,450 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:26:19,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:26:19,459 INFO L82 PathProgramCache]: Analyzing trace with hash 1178337343, now seen corresponding path program 1 times [2020-09-25 12:26:19,471 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:26:19,471 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [755514325] [2020-09-25 12:26:19,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:26:19,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:19,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:20,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:20,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:21,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:21,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 12:26:21,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 12:26:21,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1459 [2020-09-25 12:26:21,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:21,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:21,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:26:21,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:26:21,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 12:26:21,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 12:26:21,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:26:21,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:21,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:21,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:21,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:26:21,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:21,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 12:26:21,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:21,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:21,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:26:21,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:26:21,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:26:21,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:21,414 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 12:26:21,415 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [755514325] [2020-09-25 12:26:21,418 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:26:21,418 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 12:26:21,419 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453075606] [2020-09-25 12:26:21,426 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 12:26:21,427 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:26:21,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 12:26:21,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 12:26:21,449 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 12:26:23,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:26:23,545 INFO L93 Difference]: Finished difference Result 1104 states and 1521 transitions. [2020-09-25 12:26:23,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 12:26:23,547 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 80 [2020-09-25 12:26:23,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:26:23,571 INFO L225 Difference]: With dead ends: 1104 [2020-09-25 12:26:23,571 INFO L226 Difference]: Without dead ends: 578 [2020-09-25 12:26:23,580 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:26:23,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-09-25 12:26:23,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 544. [2020-09-25 12:26:23,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2020-09-25 12:26:23,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 655 transitions. [2020-09-25 12:26:23,689 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 655 transitions. Word has length 80 [2020-09-25 12:26:23,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:26:23,689 INFO L479 AbstractCegarLoop]: Abstraction has 544 states and 655 transitions. [2020-09-25 12:26:23,690 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 12:26:23,690 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 655 transitions. [2020-09-25 12:26:23,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-09-25 12:26:23,698 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:26:23,699 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 12:26:23,699 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:26:23,699 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:26:23,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:26:23,700 INFO L82 PathProgramCache]: Analyzing trace with hash 1494862159, now seen corresponding path program 1 times [2020-09-25 12:26:23,700 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:26:23,700 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [333201886] [2020-09-25 12:26:23,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:26:23,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:23,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:23,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:24,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:24,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:24,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:27,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:27,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-09-25 12:26:27,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 12:26:27,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3878 [2020-09-25 12:26:27,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:27,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:27,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:26:27,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 12:26:27,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-09-25 12:26:27,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:27,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:26:27,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:27,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:27,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:27,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:26:27,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:27,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 12:26:27,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:27,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:27,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:26:27,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:26:27,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:26:27,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:26:27,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:26:27,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:27,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:27,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:27,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:28,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 12:26:28,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:26:28,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-09-25 12:26:28,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:28,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:28,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:26:28,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:26:28,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 12:26:28,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:28,084 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 56 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 12:26:28,085 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [333201886] [2020-09-25 12:26:28,085 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:26:28,085 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 12:26:28,086 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216875605] [2020-09-25 12:26:28,088 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:26:28,089 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:26:28,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:26:28,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:26:28,093 INFO L87 Difference]: Start difference. First operand 544 states and 655 transitions. Second operand 5 states. [2020-09-25 12:26:29,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:26:29,828 INFO L93 Difference]: Finished difference Result 1224 states and 1530 transitions. [2020-09-25 12:26:29,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 12:26:29,830 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 159 [2020-09-25 12:26:29,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:26:29,839 INFO L225 Difference]: With dead ends: 1224 [2020-09-25 12:26:29,839 INFO L226 Difference]: Without dead ends: 695 [2020-09-25 12:26:29,841 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 12:26:29,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2020-09-25 12:26:29,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 695. [2020-09-25 12:26:29,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2020-09-25 12:26:29,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 850 transitions. [2020-09-25 12:26:29,876 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 850 transitions. Word has length 159 [2020-09-25 12:26:29,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:26:29,877 INFO L479 AbstractCegarLoop]: Abstraction has 695 states and 850 transitions. [2020-09-25 12:26:29,877 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:26:29,878 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 850 transitions. [2020-09-25 12:26:29,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-09-25 12:26:29,883 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:26:29,884 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 12:26:29,884 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:26:29,884 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:26:29,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:26:29,885 INFO L82 PathProgramCache]: Analyzing trace with hash -663007827, now seen corresponding path program 1 times [2020-09-25 12:26:29,885 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:26:29,885 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1697585809] [2020-09-25 12:26:29,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:26:29,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:30,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:30,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:30,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:30,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:30,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:33,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:33,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:33,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:34,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:34,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-09-25 12:26:34,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 12:26:34,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-09-25 12:26:34,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:34,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:34,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:26:34,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:26:34,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-09-25 12:26:34,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:26:35,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:26:35,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:35,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:35,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:35,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:26:35,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:35,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 12:26:35,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:35,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:35,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:26:35,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:26:35,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:26:35,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:35,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:26:35,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:35,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:35,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:35,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 12:26:35,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:35,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-09-25 12:26:35,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:35,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:35,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:26:35,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:26:35,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 12:26:35,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:35,428 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 7 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:26:35,428 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1697585809] [2020-09-25 12:26:35,429 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:26:35,429 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 12:26:35,429 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882587784] [2020-09-25 12:26:35,430 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 12:26:35,430 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:26:35,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 12:26:35,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 12:26:35,431 INFO L87 Difference]: Start difference. First operand 695 states and 850 transitions. Second operand 8 states. [2020-09-25 12:26:39,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:26:39,138 INFO L93 Difference]: Finished difference Result 2012 states and 2641 transitions. [2020-09-25 12:26:39,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 12:26:39,139 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 169 [2020-09-25 12:26:39,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:26:39,157 INFO L225 Difference]: With dead ends: 2012 [2020-09-25 12:26:39,157 INFO L226 Difference]: Without dead ends: 1482 [2020-09-25 12:26:39,162 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-09-25 12:26:39,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1482 states. [2020-09-25 12:26:39,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1482 to 1365. [2020-09-25 12:26:39,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1365 states. [2020-09-25 12:26:39,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1365 states to 1365 states and 1743 transitions. [2020-09-25 12:26:39,254 INFO L78 Accepts]: Start accepts. Automaton has 1365 states and 1743 transitions. Word has length 169 [2020-09-25 12:26:39,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:26:39,256 INFO L479 AbstractCegarLoop]: Abstraction has 1365 states and 1743 transitions. [2020-09-25 12:26:39,256 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 12:26:39,256 INFO L276 IsEmpty]: Start isEmpty. Operand 1365 states and 1743 transitions. [2020-09-25 12:26:39,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-09-25 12:26:39,268 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:26:39,268 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 12:26:39,269 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 12:26:39,269 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:26:39,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:26:39,269 INFO L82 PathProgramCache]: Analyzing trace with hash 715941429, now seen corresponding path program 1 times [2020-09-25 12:26:39,270 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:26:39,270 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1935130197] [2020-09-25 12:26:39,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:26:39,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:39,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:39,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:39,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:41,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:41,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-09-25 12:26:41,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 12:26:41,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1733 [2020-09-25 12:26:41,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:41,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:41,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:26:41,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 107 [2020-09-25 12:26:41,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 12:26:41,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:41,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:26:41,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:41,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:41,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:41,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:26:41,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:41,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 12:26:41,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:41,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:41,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:26:41,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:26:41,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:26:41,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:41,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:26:41,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:41,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:41,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:41,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 12:26:41,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:41,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-09-25 12:26:41,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:41,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:41,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:26:41,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:26:41,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 12:26:41,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:41,309 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 63 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:26:41,310 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1935130197] [2020-09-25 12:26:41,311 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:26:41,311 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 12:26:41,311 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338946562] [2020-09-25 12:26:41,314 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:26:41,314 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:26:41,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:26:41,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:26:41,316 INFO L87 Difference]: Start difference. First operand 1365 states and 1743 transitions. Second operand 5 states. [2020-09-25 12:26:43,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:26:43,532 INFO L93 Difference]: Finished difference Result 3353 states and 4453 transitions. [2020-09-25 12:26:43,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 12:26:43,535 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 171 [2020-09-25 12:26:43,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:26:43,551 INFO L225 Difference]: With dead ends: 3353 [2020-09-25 12:26:43,551 INFO L226 Difference]: Without dead ends: 2153 [2020-09-25 12:26:43,561 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 12:26:43,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2153 states. [2020-09-25 12:26:43,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2153 to 2129. [2020-09-25 12:26:43,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2129 states. [2020-09-25 12:26:43,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2129 states to 2129 states and 2598 transitions. [2020-09-25 12:26:43,645 INFO L78 Accepts]: Start accepts. Automaton has 2129 states and 2598 transitions. Word has length 171 [2020-09-25 12:26:43,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:26:43,645 INFO L479 AbstractCegarLoop]: Abstraction has 2129 states and 2598 transitions. [2020-09-25 12:26:43,645 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:26:43,645 INFO L276 IsEmpty]: Start isEmpty. Operand 2129 states and 2598 transitions. [2020-09-25 12:26:43,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-09-25 12:26:43,654 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:26:43,654 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, 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 12:26:43,654 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 12:26:43,655 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:26:43,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:26:43,655 INFO L82 PathProgramCache]: Analyzing trace with hash -883468643, now seen corresponding path program 1 times [2020-09-25 12:26:43,655 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:26:43,656 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [713865356] [2020-09-25 12:26:43,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:26:43,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:43,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:43,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:44,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:44,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:46,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:48,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:48,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:48,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 261 [2020-09-25 12:26:48,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 12:26:48,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-09-25 12:26:48,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:48,742 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:48,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:26:48,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:26:48,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-09-25 12:26:48,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:26:48,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:26:48,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:48,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:48,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:48,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:26:48,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:48,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 12:26:48,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:48,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:48,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:26:48,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:26:48,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:26:48,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:48,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:26:48,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:48,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:48,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:48,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 12:26:48,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:48,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-09-25 12:26:48,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:48,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:48,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:26:48,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:26:48,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 12:26:48,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:49,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 12:26:49,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:49,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:49,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:49,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 12:26:49,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:49,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-09-25 12:26:49,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:49,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:49,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:26:49,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:26:49,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 12:26:49,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:49,300 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 138 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-09-25 12:26:49,300 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [713865356] [2020-09-25 12:26:49,300 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:26:49,301 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 12:26:49,301 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846496555] [2020-09-25 12:26:49,301 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 12:26:49,302 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:26:49,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 12:26:49,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 12:26:49,302 INFO L87 Difference]: Start difference. First operand 2129 states and 2598 transitions. Second operand 9 states. [2020-09-25 12:26:53,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:26:53,615 INFO L93 Difference]: Finished difference Result 5195 states and 6631 transitions. [2020-09-25 12:26:53,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 12:26:53,616 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 248 [2020-09-25 12:26:53,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:26:53,635 INFO L225 Difference]: With dead ends: 5195 [2020-09-25 12:26:53,636 INFO L226 Difference]: Without dead ends: 3231 [2020-09-25 12:26:53,643 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2020-09-25 12:26:53,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3231 states. [2020-09-25 12:26:53,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3231 to 3140. [2020-09-25 12:26:53,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3140 states. [2020-09-25 12:26:53,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3140 states to 3140 states and 3943 transitions. [2020-09-25 12:26:53,747 INFO L78 Accepts]: Start accepts. Automaton has 3140 states and 3943 transitions. Word has length 248 [2020-09-25 12:26:53,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:26:53,748 INFO L479 AbstractCegarLoop]: Abstraction has 3140 states and 3943 transitions. [2020-09-25 12:26:53,748 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 12:26:53,748 INFO L276 IsEmpty]: Start isEmpty. Operand 3140 states and 3943 transitions. [2020-09-25 12:26:53,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2020-09-25 12:26:53,754 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:26:53,755 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, 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] [2020-09-25 12:26:53,755 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 12:26:53,755 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:26:53,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:26:53,755 INFO L82 PathProgramCache]: Analyzing trace with hash 889304234, now seen corresponding path program 1 times [2020-09-25 12:26:53,756 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:26:53,756 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [274940213] [2020-09-25 12:26:53,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:26:53,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:53,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:53,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:54,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:54,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:54,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:55,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:56,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:56,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:57,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:58,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:58,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:58,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 265 [2020-09-25 12:26:58,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 12:26:58,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-25 12:26:58,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:58,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:58,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:26:58,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 12:26:58,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 196 [2020-09-25 12:26:58,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:26:58,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:26:58,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:59,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:59,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:59,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:26:59,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:59,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 12:26:59,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:59,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:59,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 12:26:59,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:26:59,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 12:26:59,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:26:59,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:26:59,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:59,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:59,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:59,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:59,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 12:26:59,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:26:59,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-09-25 12:26:59,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:59,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:59,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:26:59,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:26:59,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-25 12:26:59,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:26:59,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 12:26:59,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:59,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:59,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:59,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:59,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 12:26:59,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:26:59,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 195 [2020-09-25 12:26:59,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:59,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:59,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:26:59,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:26:59,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 12:26:59,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:26:59,615 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 131 proven. 2 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2020-09-25 12:26:59,616 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [274940213] [2020-09-25 12:26:59,616 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:26:59,616 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 12:26:59,616 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160768074] [2020-09-25 12:26:59,617 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 12:26:59,618 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:26:59,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 12:26:59,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-09-25 12:26:59,619 INFO L87 Difference]: Start difference. First operand 3140 states and 3943 transitions. Second operand 10 states. [2020-09-25 12:27:03,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:27:03,528 INFO L93 Difference]: Finished difference Result 7104 states and 9229 transitions. [2020-09-25 12:27:03,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 12:27:03,532 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 252 [2020-09-25 12:27:03,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:27:03,555 INFO L225 Difference]: With dead ends: 7104 [2020-09-25 12:27:03,556 INFO L226 Difference]: Without dead ends: 4091 [2020-09-25 12:27:03,569 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2020-09-25 12:27:03,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4091 states. [2020-09-25 12:27:03,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4091 to 3891. [2020-09-25 12:27:03,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3891 states. [2020-09-25 12:27:03,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3891 states to 3891 states and 4826 transitions. [2020-09-25 12:27:03,704 INFO L78 Accepts]: Start accepts. Automaton has 3891 states and 4826 transitions. Word has length 252 [2020-09-25 12:27:03,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:27:03,705 INFO L479 AbstractCegarLoop]: Abstraction has 3891 states and 4826 transitions. [2020-09-25 12:27:03,705 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 12:27:03,705 INFO L276 IsEmpty]: Start isEmpty. Operand 3891 states and 4826 transitions. [2020-09-25 12:27:03,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2020-09-25 12:27:03,713 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:27:03,713 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, 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 12:27:03,714 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 12:27:03,714 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:27:03,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:27:03,714 INFO L82 PathProgramCache]: Analyzing trace with hash -1284380673, now seen corresponding path program 1 times [2020-09-25 12:27:03,715 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:27:03,715 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1265782701] [2020-09-25 12:27:03,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:27:03,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:03,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:03,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:04,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:04,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:05,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:05,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking...