/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label04.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:33:29,684 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:33:29,688 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:33:29,717 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:33:29,718 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:33:29,719 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:33:29,721 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:33:29,723 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:33:29,724 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:33:29,726 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:33:29,727 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:33:29,728 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:33:29,728 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:33:29,730 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:33:29,731 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:33:29,732 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:33:29,733 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:33:29,734 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:33:29,736 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:33:29,738 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:33:29,739 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:33:29,741 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:33:29,742 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:33:29,743 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:33:29,746 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:33:29,746 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:33:29,746 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:33:29,747 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:33:29,748 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:33:29,749 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:33:29,749 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:33:29,750 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:33:29,751 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:33:29,752 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:33:29,753 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:33:29,753 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:33:29,754 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:33:29,754 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:33:29,755 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:33:29,756 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:33:29,757 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:33:29,758 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 13:33:29,784 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:33:29,785 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:33:29,786 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:33:29,786 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:33:29,787 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:33:29,787 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:33:29,787 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:33:29,787 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:33:29,787 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:33:29,788 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:33:29,788 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:33:29,788 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:33:29,788 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:33:29,788 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:33:29,789 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:33:29,789 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:33:29,789 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:33:29,789 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:33:29,789 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:33:29,790 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:33:29,790 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:33:29,790 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:33:29,790 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:33:29,790 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:33:29,791 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:33:29,791 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:33:29,791 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:33:29,791 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:33:29,791 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:33:29,791 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; [2020-09-25 13:33:30,266 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:33:30,294 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:33:30,301 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:33:30,303 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:33:30,304 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:33:30,305 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label04.c [2020-09-25 13:33:30,398 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b1a90bea7/2d2111dca2734e19b4dd8e3d304769d5/FLAGf02cb67bc [2020-09-25 13:33:31,082 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:33:31,083 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label04.c [2020-09-25 13:33:31,099 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b1a90bea7/2d2111dca2734e19b4dd8e3d304769d5/FLAGf02cb67bc [2020-09-25 13:33:31,322 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b1a90bea7/2d2111dca2734e19b4dd8e3d304769d5 [2020-09-25 13:33:31,338 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:33:31,347 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:33:31,352 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:33:31,352 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:33:31,357 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:33:31,359 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:33:31" (1/1) ... [2020-09-25 13:33:31,365 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1987833a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:31, skipping insertion in model container [2020-09-25 13:33:31,365 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:33:31" (1/1) ... [2020-09-25 13:33:31,376 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:33:31,454 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:33:32,063 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:33:32,075 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:33:32,266 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:33:32,292 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:33:32,294 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:32 WrapperNode [2020-09-25 13:33:32,294 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:33:32,295 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:33:32,305 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:33:32,305 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:33:32,329 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:32" (1/1) ... [2020-09-25 13:33:32,331 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:32" (1/1) ... [2020-09-25 13:33:32,369 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:32" (1/1) ... [2020-09-25 13:33:32,370 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:32" (1/1) ... [2020-09-25 13:33:32,413 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:32" (1/1) ... [2020-09-25 13:33:32,435 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:32" (1/1) ... [2020-09-25 13:33:32,450 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:32" (1/1) ... [2020-09-25 13:33:32,464 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:33:32,465 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:33:32,465 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:33:32,465 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:33:32,467 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:32" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:33:32,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:33:32,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:33:32,566 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 13:33:32,567 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:33:32,567 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 13:33:32,567 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:33:32,567 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:33:32,568 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 13:33:32,568 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:33:32,569 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:33:32,569 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:33:33,959 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:33:33,959 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 13:33:33,968 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:33:33 BoogieIcfgContainer [2020-09-25 13:33:33,968 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:33:33,969 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:33:33,969 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:33:33,973 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:33:33,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:33:31" (1/3) ... [2020-09-25 13:33:33,975 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a9fbdfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:33:33, skipping insertion in model container [2020-09-25 13:33:33,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:32" (2/3) ... [2020-09-25 13:33:33,975 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a9fbdfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:33:33, skipping insertion in model container [2020-09-25 13:33:33,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:33:33" (3/3) ... [2020-09-25 13:33:33,978 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label04.c [2020-09-25 13:33:33,990 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:33:34,002 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:33:34,030 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:33:34,068 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:33:34,068 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:33:34,068 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:33:34,068 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:33:34,068 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:33:34,069 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:33:34,069 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:33:34,069 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:33:34,103 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 13:33:34,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-09-25 13:33:34,118 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:33:34,119 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] [2020-09-25 13:33:34,120 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:33:34,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:33:34,128 INFO L82 PathProgramCache]: Analyzing trace with hash -1435975873, now seen corresponding path program 1 times [2020-09-25 13:33:34,140 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:33:34,141 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [999709189] [2020-09-25 13:33:34,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:33:34,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:34,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:34,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:35,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:35,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-09-25 13:33:35,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:33:35,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 646 [2020-09-25 13:33:35,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:35,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:35,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:33:35,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 13:33:35,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-25 13:33:35,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 13:33:35,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:33:35,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:35,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:35,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:35,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:33:35,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:35,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-25 13:33:35,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:35,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:35,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:33:35,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:35,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:33:35,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:35,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:33:35,280 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [999709189] [2020-09-25 13:33:35,284 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:33:35,284 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 13:33:35,285 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069657377] [2020-09-25 13:33:35,294 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 13:33:35,295 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:33:35,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 13:33:35,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 13:33:35,322 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 13:33:37,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:33:37,446 INFO L93 Difference]: Finished difference Result 1069 states and 1495 transitions. [2020-09-25 13:33:37,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 13:33:37,448 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 85 [2020-09-25 13:33:37,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:33:37,471 INFO L225 Difference]: With dead ends: 1069 [2020-09-25 13:33:37,472 INFO L226 Difference]: Without dead ends: 555 [2020-09-25 13:33:37,486 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 13:33:37,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2020-09-25 13:33:37,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 543. [2020-09-25 13:33:37,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 543 states. [2020-09-25 13:33:37,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 670 transitions. [2020-09-25 13:33:37,586 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 670 transitions. Word has length 85 [2020-09-25 13:33:37,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:33:37,587 INFO L479 AbstractCegarLoop]: Abstraction has 543 states and 670 transitions. [2020-09-25 13:33:37,587 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 13:33:37,587 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 670 transitions. [2020-09-25 13:33:37,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-09-25 13:33:37,598 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:33:37,598 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:33:37,598 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:33:37,599 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:33:37,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:33:37,599 INFO L82 PathProgramCache]: Analyzing trace with hash -2117933451, now seen corresponding path program 1 times [2020-09-25 13:33:37,600 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:33:37,600 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2132115324] [2020-09-25 13:33:37,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:33:37,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:37,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:37,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:38,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:38,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:40,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:40,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:40,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-09-25 13:33:40,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 13:33:40,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2647 [2020-09-25 13:33:40,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:40,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:40,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:33:40,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 13:33:40,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 162 [2020-09-25 13:33:40,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:40,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:33:40,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:40,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:40,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:40,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:33:40,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:40,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 13:33:40,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:40,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:40,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:33:40,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:40,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:33:40,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:40,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:33:40,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:40,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:40,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:40,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:40,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 13:33:40,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:33:40,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 202 [2020-09-25 13:33:40,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:40,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:40,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:33:40,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:33:40,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 13:33:40,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:40,915 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 13:33:40,915 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2132115324] [2020-09-25 13:33:40,916 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:33:40,916 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 13:33:40,916 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9018913] [2020-09-25 13:33:40,919 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 13:33:40,920 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:33:40,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 13:33:40,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:33:40,921 INFO L87 Difference]: Start difference. First operand 543 states and 670 transitions. Second operand 8 states. [2020-09-25 13:33:43,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:33:43,864 INFO L93 Difference]: Finished difference Result 1743 states and 2321 transitions. [2020-09-25 13:33:43,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 13:33:43,865 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 165 [2020-09-25 13:33:43,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:33:43,874 INFO L225 Difference]: With dead ends: 1743 [2020-09-25 13:33:43,874 INFO L226 Difference]: Without dead ends: 1215 [2020-09-25 13:33:43,878 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-09-25 13:33:43,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1215 states. [2020-09-25 13:33:43,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1215 to 1171. [2020-09-25 13:33:43,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1171 states. [2020-09-25 13:33:43,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1171 states to 1171 states and 1461 transitions. [2020-09-25 13:33:43,946 INFO L78 Accepts]: Start accepts. Automaton has 1171 states and 1461 transitions. Word has length 165 [2020-09-25 13:33:43,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:33:43,947 INFO L479 AbstractCegarLoop]: Abstraction has 1171 states and 1461 transitions. [2020-09-25 13:33:43,947 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 13:33:43,947 INFO L276 IsEmpty]: Start isEmpty. Operand 1171 states and 1461 transitions. [2020-09-25 13:33:43,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-09-25 13:33:43,951 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:33:43,951 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:33:43,952 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:33:43,952 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:33:43,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:33:43,952 INFO L82 PathProgramCache]: Analyzing trace with hash 185368306, now seen corresponding path program 1 times [2020-09-25 13:33:43,953 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:33:43,953 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [390469279] [2020-09-25 13:33:43,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:33:44,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:44,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:44,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:44,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:44,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:45,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:45,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:46,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:48,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:49,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:49,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-09-25 13:33:49,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 13:33:49,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-09-25 13:33:49,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:49,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:49,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 13:33:49,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:33:49,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 173 [2020-09-25 13:33:49,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:49,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:33:49,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:49,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:49,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:49,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:33:49,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:49,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 13:33:49,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:49,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:49,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:33:49,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:49,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:33:49,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:49,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:33:49,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:49,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:49,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:49,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 13:33:49,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:49,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-09-25 13:33:49,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:49,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:49,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:33:49,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:33:49,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 13:33:49,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:49,565 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:33:49,565 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [390469279] [2020-09-25 13:33:49,566 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:33:49,566 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 13:33:49,566 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955753992] [2020-09-25 13:33:49,568 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 13:33:49,569 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:33:49,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 13:33:49,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:33:49,570 INFO L87 Difference]: Start difference. First operand 1171 states and 1461 transitions. Second operand 8 states. [2020-09-25 13:33:52,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:33:52,836 INFO L93 Difference]: Finished difference Result 3322 states and 4262 transitions. [2020-09-25 13:33:52,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 13:33:52,838 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 174 [2020-09-25 13:33:52,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:33:52,851 INFO L225 Difference]: With dead ends: 3322 [2020-09-25 13:33:52,851 INFO L226 Difference]: Without dead ends: 2166 [2020-09-25 13:33:52,856 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-25 13:33:52,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2166 states. [2020-09-25 13:33:52,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2166 to 2124. [2020-09-25 13:33:52,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2124 states. [2020-09-25 13:33:52,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2124 states to 2124 states and 2593 transitions. [2020-09-25 13:33:52,929 INFO L78 Accepts]: Start accepts. Automaton has 2124 states and 2593 transitions. Word has length 174 [2020-09-25 13:33:52,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:33:52,930 INFO L479 AbstractCegarLoop]: Abstraction has 2124 states and 2593 transitions. [2020-09-25 13:33:52,930 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 13:33:52,930 INFO L276 IsEmpty]: Start isEmpty. Operand 2124 states and 2593 transitions. [2020-09-25 13:33:52,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2020-09-25 13:33:52,938 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:33:52,938 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:33:52,939 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:33:52,939 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:33:52,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:33:52,939 INFO L82 PathProgramCache]: Analyzing trace with hash 1609125249, now seen corresponding path program 1 times [2020-09-25 13:33:52,940 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:33:52,940 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1737961569] [2020-09-25 13:33:52,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:33:52,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:53,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:53,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:53,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:53,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:56,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:57,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:57,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:58,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:58,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 266 [2020-09-25 13:33:58,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:33:58,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 13:33:58,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:58,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:58,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 13:33:58,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:33:58,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-09-25 13:33:58,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:58,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:33:58,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:58,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:58,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:58,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:33:58,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:58,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 13:33:58,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:58,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:58,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:33:58,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:58,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:33:58,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:58,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:33:58,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:58,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:58,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:58,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 13:33:58,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:58,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-09-25 13:33:58,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:58,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:58,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:33:58,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:33:58,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 13:33:58,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:58,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 13:33:58,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:58,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:58,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:58,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 13:33:58,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:58,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-09-25 13:33:58,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:58,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:58,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:33:58,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:33:58,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 13:33:58,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:58,582 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 148 proven. 65 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 13:33:58,582 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1737961569] [2020-09-25 13:33:58,583 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:33:58,583 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 13:33:58,583 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412679117] [2020-09-25 13:33:58,584 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 13:33:58,584 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:33:58,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 13:33:58,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-09-25 13:33:58,585 INFO L87 Difference]: Start difference. First operand 2124 states and 2593 transitions. Second operand 10 states. [2020-09-25 13:34:02,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:34:02,187 INFO L93 Difference]: Finished difference Result 5004 states and 6608 transitions. [2020-09-25 13:34:02,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 13:34:02,188 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 253 [2020-09-25 13:34:02,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:34:02,210 INFO L225 Difference]: With dead ends: 5004 [2020-09-25 13:34:02,210 INFO L226 Difference]: Without dead ends: 3838 [2020-09-25 13:34:02,217 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=107, Invalid=313, Unknown=0, NotChecked=0, Total=420 [2020-09-25 13:34:02,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3838 states. [2020-09-25 13:34:02,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3838 to 3445. [2020-09-25 13:34:02,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3445 states. [2020-09-25 13:34:02,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3445 states to 3445 states and 4359 transitions. [2020-09-25 13:34:02,326 INFO L78 Accepts]: Start accepts. Automaton has 3445 states and 4359 transitions. Word has length 253 [2020-09-25 13:34:02,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:34:02,327 INFO L479 AbstractCegarLoop]: Abstraction has 3445 states and 4359 transitions. [2020-09-25 13:34:02,327 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 13:34:02,327 INFO L276 IsEmpty]: Start isEmpty. Operand 3445 states and 4359 transitions. [2020-09-25 13:34:02,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2020-09-25 13:34:02,335 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:34:02,335 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:34:02,336 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:34:02,336 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:34:02,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:34:02,336 INFO L82 PathProgramCache]: Analyzing trace with hash -2077380539, now seen corresponding path program 1 times [2020-09-25 13:34:02,336 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:34:02,337 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1168102702] [2020-09-25 13:34:02,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:34:02,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:02,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:02,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:02,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:03,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:03,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:03,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:04,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:07,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:07,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 279 [2020-09-25 13:34:07,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:34:07,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 13:34:07,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:07,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:07,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:34:07,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 13:34:07,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 212 [2020-09-25 13:34:07,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:07,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:34:07,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:07,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:07,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:07,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:34:07,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:07,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 13:34:07,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:07,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:07,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 13:34:07,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:34:07,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 13:34:07,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:07,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:34:07,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:07,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:07,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:07,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:07,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 13:34:07,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:34:07,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-09-25 13:34:07,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:07,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:07,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:34:07,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:34:07,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-25 13:34:07,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:07,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 13:34:07,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:07,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:07,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:08,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:08,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 13:34:08,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:34:08,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 414 [2020-09-25 13:34:08,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:08,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:08,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:34:08,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:34:08,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-09-25 13:34:08,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:08,479 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 141 proven. 2 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-09-25 13:34:08,479 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1168102702] [2020-09-25 13:34:08,479 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:34:08,480 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 13:34:08,480 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568511522] [2020-09-25 13:34:08,481 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 13:34:08,481 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:34:08,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 13:34:08,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-09-25 13:34:08,482 INFO L87 Difference]: Start difference. First operand 3445 states and 4359 transitions. Second operand 9 states. [2020-09-25 13:34:12,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:34:12,358 INFO L93 Difference]: Finished difference Result 6904 states and 9021 transitions. [2020-09-25 13:34:12,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 13:34:12,359 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 266 [2020-09-25 13:34:12,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:34:12,382 INFO L225 Difference]: With dead ends: 6904 [2020-09-25 13:34:12,382 INFO L226 Difference]: Without dead ends: 4393 [2020-09-25 13:34:12,392 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2020-09-25 13:34:12,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4393 states. [2020-09-25 13:34:12,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4393 to 4352. [2020-09-25 13:34:12,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4352 states. [2020-09-25 13:34:12,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4352 states to 4352 states and 5444 transitions. [2020-09-25 13:34:12,519 INFO L78 Accepts]: Start accepts. Automaton has 4352 states and 5444 transitions. Word has length 266 [2020-09-25 13:34:12,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:34:12,520 INFO L479 AbstractCegarLoop]: Abstraction has 4352 states and 5444 transitions. [2020-09-25 13:34:12,520 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 13:34:12,520 INFO L276 IsEmpty]: Start isEmpty. Operand 4352 states and 5444 transitions. [2020-09-25 13:34:12,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2020-09-25 13:34:12,528 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:34:12,529 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 13:34:12,529 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 13:34:12,529 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:34:12,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:34:12,530 INFO L82 PathProgramCache]: Analyzing trace with hash 1537763131, now seen corresponding path program 1 times [2020-09-25 13:34:12,530 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:34:12,531 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1091610674] [2020-09-25 13:34:12,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:34:12,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:12,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:12,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:12,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:13,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:14,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:14,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:17,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:17,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 281 [2020-09-25 13:34:17,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 13:34:17,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-09-25 13:34:17,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:17,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:17,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 13:34:17,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 13:34:17,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 161 [2020-09-25 13:34:17,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:17,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:34:17,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:17,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:17,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:17,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:34:17,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:17,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 13:34:17,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:17,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:17,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 13:34:17,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:34:17,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 13:34:17,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:17,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:34:17,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:17,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:17,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:18,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:18,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 13:34:18,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:34:18,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 218 [2020-09-25 13:34:18,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:18,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:18,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:34:18,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:34:18,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 13:34:18,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:18,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 13:34:18,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:18,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:18,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:18,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:18,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 13:34:18,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:34:18,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 272 [2020-09-25 13:34:18,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:18,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:18,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:34:18,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:34:18,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-25 13:34:18,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:18,584 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 220 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 13:34:18,585 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1091610674] [2020-09-25 13:34:18,587 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:34:18,587 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 13:34:18,587 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146652511] [2020-09-25 13:34:18,588 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 13:34:18,589 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:34:18,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 13:34:18,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-25 13:34:18,590 INFO L87 Difference]: Start difference. First operand 4352 states and 5444 transitions. Second operand 10 states.