/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=0.1 --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_label36.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:09:53,620 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:09:53,623 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:09:53,653 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:09:53,653 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:09:53,654 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:09:53,656 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:09:53,666 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:09:53,667 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:09:53,670 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:09:53,672 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:09:53,673 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:09:53,673 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:09:53,674 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:09:53,675 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:09:53,679 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:09:53,680 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:09:53,683 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:09:53,685 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:09:53,691 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:09:53,694 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:09:53,696 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:09:53,699 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:09:53,700 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:09:53,710 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:09:53,710 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:09:53,710 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:09:53,711 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:09:53,715 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:09:53,716 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:09:53,716 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:09:53,717 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:09:53,719 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:09:53,720 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:09:53,721 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:09:53,722 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:09:53,722 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:09:53,722 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:09:53,723 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:09:53,724 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:09:53,726 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:09:53,726 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 10:09:53,772 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:09:53,772 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:09:53,774 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:09:53,775 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:09:53,775 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:09:53,775 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:09:53,775 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:09:53,776 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:09:53,776 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:09:53,776 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:09:53,777 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:09:53,777 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:09:53,778 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:09:53,778 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:09:53,778 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:09:53,779 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:09:53,779 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:09:53,779 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:09:53,779 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:09:53,779 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:09:53,780 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:09:53,780 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:09:53,780 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:09:53,780 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:09:53,781 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:09:53,781 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:09:53,781 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:09:53,781 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:09:53,781 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:09:53,781 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=0.1;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=0.1;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=0.1;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=0.1;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=0.1;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=0.1;log-additional-information=true; [2020-09-25 10:09:54,240 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:09:54,262 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:09:54,268 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:09:54,270 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:09:54,270 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:09:54,271 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label36.c [2020-09-25 10:09:54,352 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dab90301a/b28bfcf5f3ff48e7b9d29ca3b929c132/FLAG6663fe0b4 [2020-09-25 10:09:55,071 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:09:55,072 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label36.c [2020-09-25 10:09:55,089 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dab90301a/b28bfcf5f3ff48e7b9d29ca3b929c132/FLAG6663fe0b4 [2020-09-25 10:09:55,278 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dab90301a/b28bfcf5f3ff48e7b9d29ca3b929c132 [2020-09-25 10:09:55,292 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:09:55,298 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:09:55,304 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:09:55,304 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:09:55,308 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:09:55,310 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:09:55" (1/1) ... [2020-09-25 10:09:55,315 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@570ad94a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:09:55, skipping insertion in model container [2020-09-25 10:09:55,316 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:09:55" (1/1) ... [2020-09-25 10:09:55,327 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:09:55,400 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:09:55,968 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:09:55,978 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:09:56,070 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:09:56,091 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:09:56,091 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:09:56 WrapperNode [2020-09-25 10:09:56,091 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:09:56,092 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:09:56,092 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:09:56,093 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:09:56,114 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:09:56" (1/1) ... [2020-09-25 10:09:56,116 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:09:56" (1/1) ... [2020-09-25 10:09:56,135 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:09:56" (1/1) ... [2020-09-25 10:09:56,135 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:09:56" (1/1) ... [2020-09-25 10:09:56,174 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:09:56" (1/1) ... [2020-09-25 10:09:56,204 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:09:56" (1/1) ... [2020-09-25 10:09:56,214 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:09:56" (1/1) ... [2020-09-25 10:09:56,220 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:09:56,221 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:09:56,221 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:09:56,221 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:09:56,223 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:09:56" (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 10:09:56,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:09:56,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:09:56,295 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 10:09:56,296 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:09:56,296 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 10:09:56,296 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:09:56,296 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 10:09:56,296 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 10:09:56,297 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:09:56,297 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:09:56,297 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:09:57,700 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:09:57,700 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 10:09:57,710 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:09:57 BoogieIcfgContainer [2020-09-25 10:09:57,710 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:09:57,712 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:09:57,712 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:09:57,716 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:09:57,716 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:09:55" (1/3) ... [2020-09-25 10:09:57,717 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5781497d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:09:57, skipping insertion in model container [2020-09-25 10:09:57,717 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:09:56" (2/3) ... [2020-09-25 10:09:57,718 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5781497d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:09:57, skipping insertion in model container [2020-09-25 10:09:57,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:09:57" (3/3) ... [2020-09-25 10:09:57,720 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label36.c [2020-09-25 10:09:57,732 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:09:57,743 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:09:57,765 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:09:57,801 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:09:57,801 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:09:57,801 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:09:57,801 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:09:57,802 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:09:57,802 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:09:57,802 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:09:57,802 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:09:57,835 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 10:09:57,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-09-25 10:09:57,859 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:09:57,863 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:09:57,863 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:09:57,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:09:57,872 INFO L82 PathProgramCache]: Analyzing trace with hash -404902623, now seen corresponding path program 1 times [2020-09-25 10:09:57,881 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:09:57,881 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [591839330] [2020-09-25 10:09:57,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:09:58,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:58,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:58,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:59,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:59,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:00,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:00,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:01,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:03,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:03,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-09-25 10:10:03,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 10:10:03,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-25 10:10:03,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:03,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:03,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:10:03,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 10:10:03,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-09-25 10:10:03,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 10:10:03,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:10:03,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:03,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:03,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:03,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:10:03,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:10:03,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 10:10:03,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:03,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:03,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:10:03,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:10:03,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 10:10:03,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:10:03,742 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 10:10:03,743 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [591839330] [2020-09-25 10:10:03,746 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:10:03,747 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 10:10:03,748 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364196152] [2020-09-25 10:10:03,757 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 10:10:03,757 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:10:03,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 10:10:03,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 10:10:03,779 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 10:10:06,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:10:06,021 INFO L93 Difference]: Finished difference Result 1206 states and 1652 transitions. [2020-09-25 10:10:06,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 10:10:06,026 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 158 [2020-09-25 10:10:06,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:10:06,050 INFO L225 Difference]: With dead ends: 1206 [2020-09-25 10:10:06,050 INFO L226 Difference]: Without dead ends: 628 [2020-09-25 10:10:06,061 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 10:10:06,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2020-09-25 10:10:06,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 615. [2020-09-25 10:10:06,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 615 states. [2020-09-25 10:10:06,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 751 transitions. [2020-09-25 10:10:06,180 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 751 transitions. Word has length 158 [2020-09-25 10:10:06,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:10:06,181 INFO L479 AbstractCegarLoop]: Abstraction has 615 states and 751 transitions. [2020-09-25 10:10:06,182 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 10:10:06,182 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 751 transitions. [2020-09-25 10:10:06,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-09-25 10:10:06,198 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:10:06,198 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:10:06,199 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:10:06,199 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:10:06,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:10:06,200 INFO L82 PathProgramCache]: Analyzing trace with hash 856620700, now seen corresponding path program 1 times [2020-09-25 10:10:06,200 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:10:06,201 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2050958332] [2020-09-25 10:10:06,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:10:06,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:06,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:06,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:06,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:06,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:11,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:11,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 203 [2020-09-25 10:10:11,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 10:10:11,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 10:10:11,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:11,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:11,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:10:11,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 10:10:11,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-09-25 10:10:11,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:11,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:10:11,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:11,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:11,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:11,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:10:11,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:10:11,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-25 10:10:11,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:11,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:11,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:10:11,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:10:11,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 10:10:11,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:11,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:10:11,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:11,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:11,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:11,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:11,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 10:10:11,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:10:11,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-09-25 10:10:11,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:11,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:11,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:10:11,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:10:11,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 10:10:11,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:11,894 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 10:10:11,895 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2050958332] [2020-09-25 10:10:11,895 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:10:11,895 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 10:10:11,895 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334703379] [2020-09-25 10:10:11,898 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 10:10:11,898 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:10:11,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 10:10:11,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2020-09-25 10:10:11,899 INFO L87 Difference]: Start difference. First operand 615 states and 751 transitions. Second operand 12 states. [2020-09-25 10:10:15,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:10:15,822 INFO L93 Difference]: Finished difference Result 1927 states and 2548 transitions. [2020-09-25 10:10:15,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 10:10:15,824 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 192 [2020-09-25 10:10:15,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:10:15,831 INFO L225 Difference]: With dead ends: 1927 [2020-09-25 10:10:15,831 INFO L226 Difference]: Without dead ends: 887 [2020-09-25 10:10:15,837 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=123, Invalid=257, Unknown=0, NotChecked=0, Total=380 [2020-09-25 10:10:15,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 887 states. [2020-09-25 10:10:15,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 887 to 722. [2020-09-25 10:10:15,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 722 states. [2020-09-25 10:10:15,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 722 states to 722 states and 845 transitions. [2020-09-25 10:10:15,873 INFO L78 Accepts]: Start accepts. Automaton has 722 states and 845 transitions. Word has length 192 [2020-09-25 10:10:15,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:10:15,874 INFO L479 AbstractCegarLoop]: Abstraction has 722 states and 845 transitions. [2020-09-25 10:10:15,874 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 10:10:15,874 INFO L276 IsEmpty]: Start isEmpty. Operand 722 states and 845 transitions. [2020-09-25 10:10:15,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-09-25 10:10:15,878 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:10:15,879 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:10:15,879 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:10:15,879 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:10:15,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:10:15,880 INFO L82 PathProgramCache]: Analyzing trace with hash 564185116, now seen corresponding path program 1 times [2020-09-25 10:10:15,880 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:10:15,881 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [702600351] [2020-09-25 10:10:15,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:10:15,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:15,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:15,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:16,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:16,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:17,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:19,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:19,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:19,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:20,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:20,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-09-25 10:10:20,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 10:10:20,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 10:10:20,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:20,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:20,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 10:10:20,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 10:10:20,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-09-25 10:10:20,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 10:10:21,446 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 37 [2020-09-25 10:10:21,578 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 37 [2020-09-25 10:10:21,705 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 32 [2020-09-25 10:10:21,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:10:21,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:21,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:22,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:22,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:10:22,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:10:22,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 10:10:22,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:22,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:22,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:10:22,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:10:22,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 10:10:22,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:22,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:10:22,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:22,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:22,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:22,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:22,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 10:10:22,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:10:22,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-09-25 10:10:22,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:22,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:22,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:10:22,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:10:22,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 10:10:22,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:22,485 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 23 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:10:22,485 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [702600351] [2020-09-25 10:10:22,485 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:10:22,486 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-25 10:10:22,486 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469969671] [2020-09-25 10:10:22,487 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-25 10:10:22,487 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:10:22,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-25 10:10:22,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2020-09-25 10:10:22,487 INFO L87 Difference]: Start difference. First operand 722 states and 845 transitions. Second operand 17 states. [2020-09-25 10:10:25,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:10:25,712 INFO L93 Difference]: Finished difference Result 1359 states and 1617 transitions. [2020-09-25 10:10:25,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 10:10:25,713 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 193 [2020-09-25 10:10:25,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:10:25,718 INFO L225 Difference]: With dead ends: 1359 [2020-09-25 10:10:25,718 INFO L226 Difference]: Without dead ends: 658 [2020-09-25 10:10:25,721 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=133, Invalid=373, Unknown=0, NotChecked=0, Total=506 [2020-09-25 10:10:25,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2020-09-25 10:10:25,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 648. [2020-09-25 10:10:25,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 648 states. [2020-09-25 10:10:25,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 648 states to 648 states and 709 transitions. [2020-09-25 10:10:25,743 INFO L78 Accepts]: Start accepts. Automaton has 648 states and 709 transitions. Word has length 193 [2020-09-25 10:10:25,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:10:25,743 INFO L479 AbstractCegarLoop]: Abstraction has 648 states and 709 transitions. [2020-09-25 10:10:25,743 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-25 10:10:25,744 INFO L276 IsEmpty]: Start isEmpty. Operand 648 states and 709 transitions. [2020-09-25 10:10:25,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-09-25 10:10:25,747 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:10:25,748 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, 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 10:10:25,748 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:10:25,748 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:10:25,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:10:25,749 INFO L82 PathProgramCache]: Analyzing trace with hash -784683625, now seen corresponding path program 1 times [2020-09-25 10:10:25,749 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:10:25,749 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [91386442] [2020-09-25 10:10:25,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:10:25,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:25,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:25,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:25,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:26,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:30,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:30,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 249 [2020-09-25 10:10:30,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 10:10:30,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 10:10:30,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:30,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:30,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:10:30,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-09-25 10:10:30,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-09-25 10:10:30,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:31,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:10:31,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:31,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:31,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:31,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:10:31,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:10:31,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 10:10:31,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:31,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:31,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:10:31,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:10:31,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:10:31,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:31,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:10:31,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:31,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:31,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:31,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 10:10:31,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:10:31,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 10:10:31,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:31,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:31,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:10:31,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:10:31,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:10:31,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:31,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-25 10:10:31,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:31,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:31,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:31,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 10:10:31,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:10:31,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-09-25 10:10:31,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:31,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:31,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:10:31,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:10:31,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 10:10:31,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:10:31,717 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 63 proven. 2 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-09-25 10:10:31,717 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [91386442] [2020-09-25 10:10:31,718 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:10:31,718 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 10:10:31,718 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920952488] [2020-09-25 10:10:31,719 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 10:10:31,721 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:10:31,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 10:10:31,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 10:10:31,722 INFO L87 Difference]: Start difference. First operand 648 states and 709 transitions. Second operand 8 states. [2020-09-25 10:10:34,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:10:34,198 INFO L93 Difference]: Finished difference Result 1533 states and 1687 transitions. [2020-09-25 10:10:34,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 10:10:34,199 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 236 [2020-09-25 10:10:34,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:10:34,208 INFO L225 Difference]: With dead ends: 1533 [2020-09-25 10:10:34,210 INFO L226 Difference]: Without dead ends: 809 [2020-09-25 10:10:34,213 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-09-25 10:10:34,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 809 states. [2020-09-25 10:10:34,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 809 to 794. [2020-09-25 10:10:34,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 794 states. [2020-09-25 10:10:34,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 794 states to 794 states and 864 transitions. [2020-09-25 10:10:34,248 INFO L78 Accepts]: Start accepts. Automaton has 794 states and 864 transitions. Word has length 236 [2020-09-25 10:10:34,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:10:34,249 INFO L479 AbstractCegarLoop]: Abstraction has 794 states and 864 transitions. [2020-09-25 10:10:34,250 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 10:10:34,250 INFO L276 IsEmpty]: Start isEmpty. Operand 794 states and 864 transitions. [2020-09-25 10:10:34,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-09-25 10:10:34,254 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:10:34,254 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, 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] [2020-09-25 10:10:34,255 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 10:10:34,255 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:10:34,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:10:34,255 INFO L82 PathProgramCache]: Analyzing trace with hash 902720122, now seen corresponding path program 1 times [2020-09-25 10:10:34,256 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:10:34,256 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1703245120] [2020-09-25 10:10:34,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:10:34,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:34,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:34,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:34,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:34,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:37,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:37,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:38,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:39,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:39,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 253 [2020-09-25 10:10:39,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 10:10:39,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 10:10:39,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:39,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:39,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-25 10:10:39,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 10:10:39,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 235 [2020-09-25 10:10:39,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 10:10:39,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:10:39,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:39,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:39,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:39,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:10:39,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:10:39,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-25 10:10:39,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:39,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:39,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:10:39,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:10:39,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 10:10:39,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:10:39,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:10:39,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:39,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:39,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:40,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:40,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 10:10:40,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:10:40,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 698 [2020-09-25 10:10:40,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:40,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:40,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:10:40,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:10:40,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-25 10:10:40,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:40,587 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:10:40,587 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1703245120] [2020-09-25 10:10:40,588 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:10:40,588 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 10:10:40,589 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836529162] [2020-09-25 10:10:40,590 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 10:10:40,590 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:10:40,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 10:10:40,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2020-09-25 10:10:40,591 INFO L87 Difference]: Start difference. First operand 794 states and 864 transitions. Second operand 12 states. [2020-09-25 10:10:41,099 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 56