/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.2 --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_label10.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 04:26:45,731 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 04:26:45,735 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 04:26:45,762 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 04:26:45,762 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 04:26:45,763 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 04:26:45,765 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 04:26:45,767 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 04:26:45,769 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 04:26:45,770 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 04:26:45,771 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 04:26:45,772 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 04:26:45,772 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 04:26:45,773 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 04:26:45,775 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 04:26:45,776 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 04:26:45,777 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 04:26:45,778 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 04:26:45,780 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 04:26:45,782 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 04:26:45,783 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 04:26:45,784 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 04:26:45,786 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 04:26:45,787 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 04:26:45,789 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 04:26:45,790 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 04:26:45,790 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 04:26:45,791 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 04:26:45,791 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 04:26:45,792 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 04:26:45,792 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 04:26:45,793 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 04:26:45,794 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 04:26:45,795 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 04:26:45,796 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 04:26:45,796 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 04:26:45,797 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 04:26:45,797 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 04:26:45,797 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 04:26:45,798 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 04:26:45,799 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 04:26:45,800 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 04:26:45,848 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 04:26:45,849 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 04:26:45,852 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 04:26:45,852 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 04:26:45,853 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 04:26:45,853 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 04:26:45,853 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 04:26:45,853 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 04:26:45,853 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 04:26:45,856 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 04:26:45,856 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 04:26:45,856 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 04:26:45,856 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 04:26:45,856 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 04:26:45,857 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 04:26:45,857 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 04:26:45,857 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 04:26:45,857 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 04:26:45,858 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 04:26:45,858 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 04:26:45,858 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 04:26:45,858 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:26:45,858 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 04:26:45,859 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 04:26:45,860 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 04:26:45,860 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 04:26:45,860 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 04:26:45,860 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 04:26:45,861 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 04:26:45,861 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; [2020-09-25 04:26:46,339 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 04:26:46,357 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 04:26:46,362 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 04:26:46,364 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 04:26:46,364 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 04:26:46,366 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label10.c [2020-09-25 04:26:46,463 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ff1d3e68b/4bafd7e1af264be780f7e8f028a1710a/FLAGa9ed69ad2 [2020-09-25 04:26:47,113 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 04:26:47,114 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label10.c [2020-09-25 04:26:47,131 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ff1d3e68b/4bafd7e1af264be780f7e8f028a1710a/FLAGa9ed69ad2 [2020-09-25 04:26:47,356 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ff1d3e68b/4bafd7e1af264be780f7e8f028a1710a [2020-09-25 04:26:47,372 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 04:26:47,380 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 04:26:47,383 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 04:26:47,383 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 04:26:47,388 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 04:26:47,389 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:26:47" (1/1) ... [2020-09-25 04:26:47,394 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@245d8fce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:26:47, skipping insertion in model container [2020-09-25 04:26:47,394 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:26:47" (1/1) ... [2020-09-25 04:26:47,405 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 04:26:47,483 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 04:26:47,927 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:26:47,933 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 04:26:48,134 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:26:48,160 INFO L208 MainTranslator]: Completed translation [2020-09-25 04:26:48,161 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:26:48 WrapperNode [2020-09-25 04:26:48,161 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 04:26:48,162 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 04:26:48,162 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 04:26:48,162 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 04:26:48,177 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:26:48" (1/1) ... [2020-09-25 04:26:48,177 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:26:48" (1/1) ... [2020-09-25 04:26:48,196 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:26:48" (1/1) ... [2020-09-25 04:26:48,197 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:26:48" (1/1) ... [2020-09-25 04:26:48,245 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:26:48" (1/1) ... [2020-09-25 04:26:48,274 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:26:48" (1/1) ... [2020-09-25 04:26:48,290 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:26:48" (1/1) ... [2020-09-25 04:26:48,310 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 04:26:48,311 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 04:26:48,311 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 04:26:48,311 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 04:26:48,315 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:26:48" (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 04:26:48,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 04:26:48,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 04:26:48,416 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 04:26:48,416 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 04:26:48,416 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 04:26:48,416 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 04:26:48,416 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 04:26:48,416 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 04:26:48,417 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 04:26:48,417 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 04:26:48,417 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 04:26:49,803 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 04:26:49,803 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 04:26:49,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:26:49 BoogieIcfgContainer [2020-09-25 04:26:49,814 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 04:26:49,815 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 04:26:49,815 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 04:26:49,819 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 04:26:49,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:26:47" (1/3) ... [2020-09-25 04:26:49,821 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e80f973 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:26:49, skipping insertion in model container [2020-09-25 04:26:49,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:26:48" (2/3) ... [2020-09-25 04:26:49,822 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e80f973 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:26:49, skipping insertion in model container [2020-09-25 04:26:49,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:26:49" (3/3) ... [2020-09-25 04:26:49,825 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label10.c [2020-09-25 04:26:49,838 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 04:26:49,850 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 04:26:49,876 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 04:26:49,912 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 04:26:49,913 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 04:26:49,913 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 04:26:49,913 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 04:26:49,913 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 04:26:49,913 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 04:26:49,914 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 04:26:49,914 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 04:26:49,948 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 04:26:49,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-09-25 04:26:49,972 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:26:49,974 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, 1, 1, 1] [2020-09-25 04:26:49,974 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:26:49,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:26:49,983 INFO L82 PathProgramCache]: Analyzing trace with hash 2114164186, now seen corresponding path program 1 times [2020-09-25 04:26:49,995 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:26:49,996 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1652298201] [2020-09-25 04:26:49,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:26:50,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:50,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:50,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:50,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:51,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:51,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:52,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:53,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:53,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:54,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:55,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:55,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-09-25 04:26:55,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 04:26:55,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 04:26:55,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:55,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:55,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:26:55,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 04:26:55,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-09-25 04:26:55,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 04:26:55,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:26:55,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:55,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:55,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:55,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:26:55,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:55,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 04:26:55,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:55,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:55,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:26:55,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:26:55,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 04:26:55,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:55,672 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 04:26:55,673 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1652298201] [2020-09-25 04:26:55,675 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:26:55,676 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 04:26:55,677 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790061098] [2020-09-25 04:26:55,684 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:26:55,684 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:26:55,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:26:55,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:26:55,707 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 5 states. [2020-09-25 04:26:58,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:26:58,780 INFO L93 Difference]: Finished difference Result 1539 states and 2132 transitions. [2020-09-25 04:26:58,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 04:26:58,782 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 161 [2020-09-25 04:26:58,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:26:58,813 INFO L225 Difference]: With dead ends: 1539 [2020-09-25 04:26:58,813 INFO L226 Difference]: Without dead ends: 935 [2020-09-25 04:26:58,827 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:26:58,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 935 states. [2020-09-25 04:26:58,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 935 to 878. [2020-09-25 04:26:58,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 878 states. [2020-09-25 04:26:58,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 1089 transitions. [2020-09-25 04:26:58,979 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 1089 transitions. Word has length 161 [2020-09-25 04:26:58,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:26:58,980 INFO L479 AbstractCegarLoop]: Abstraction has 878 states and 1089 transitions. [2020-09-25 04:26:58,980 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:26:58,980 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 1089 transitions. [2020-09-25 04:26:58,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-09-25 04:26:58,991 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:26:58,992 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:26:58,992 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 04:26:58,992 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:26:58,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:26:58,993 INFO L82 PathProgramCache]: Analyzing trace with hash -880282106, now seen corresponding path program 1 times [2020-09-25 04:26:58,993 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:26:58,993 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [499405421] [2020-09-25 04:26:58,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:26:59,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:59,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:59,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:59,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:59,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:59,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:59,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:01,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:01,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:02,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:04,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:04,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:04,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-09-25 04:27:04,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 04:27:04,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-25 04:27:04,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:04,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:04,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:27:04,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 04:27:04,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-09-25 04:27:04,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:27:04,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:27:04,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:04,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:04,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:04,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:27:04,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:27:04,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 04:27:04,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:04,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:04,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:27:04,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:27:04,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:27:04,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:27:04,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:27:04,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:04,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:04,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:04,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 04:27:04,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:27:04,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 04:27:04,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:04,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:04,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:27:04,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:27:04,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 04:27:04,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:27:04,317 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:27:04,317 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [499405421] [2020-09-25 04:27:04,318 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:27:04,318 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:27:04,318 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865562029] [2020-09-25 04:27:04,321 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:27:04,321 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:27:04,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:27:04,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:27:04,322 INFO L87 Difference]: Start difference. First operand 878 states and 1089 transitions. Second operand 5 states. [2020-09-25 04:27:06,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:27:06,343 INFO L93 Difference]: Finished difference Result 2199 states and 2857 transitions. [2020-09-25 04:27:06,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:27:06,344 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 179 [2020-09-25 04:27:06,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:27:06,354 INFO L225 Difference]: With dead ends: 2199 [2020-09-25 04:27:06,355 INFO L226 Difference]: Without dead ends: 1343 [2020-09-25 04:27:06,359 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:27:06,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1343 states. [2020-09-25 04:27:06,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1343 to 1330. [2020-09-25 04:27:06,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1330 states. [2020-09-25 04:27:06,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1330 states to 1330 states and 1680 transitions. [2020-09-25 04:27:06,412 INFO L78 Accepts]: Start accepts. Automaton has 1330 states and 1680 transitions. Word has length 179 [2020-09-25 04:27:06,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:27:06,413 INFO L479 AbstractCegarLoop]: Abstraction has 1330 states and 1680 transitions. [2020-09-25 04:27:06,413 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:27:06,413 INFO L276 IsEmpty]: Start isEmpty. Operand 1330 states and 1680 transitions. [2020-09-25 04:27:06,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-09-25 04:27:06,420 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:27:06,420 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, 1, 1, 1] [2020-09-25 04:27:06,420 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 04:27:06,421 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:27:06,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:27:06,421 INFO L82 PathProgramCache]: Analyzing trace with hash -1103327617, now seen corresponding path program 1 times [2020-09-25 04:27:06,422 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:27:06,422 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [107338653] [2020-09-25 04:27:06,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:27:06,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:06,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:06,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:06,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:06,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:11,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:11,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-09-25 04:27:11,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 04:27:11,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 04:27:11,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:11,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:11,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:27:11,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 04:27:11,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 04:27:11,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:27:11,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:27:11,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:11,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:11,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:11,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:27:11,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:27:11,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 04:27:11,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:11,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:11,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:27:11,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:27:11,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 04:27:11,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:27:11,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:27:11,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:11,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:11,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:11,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 04:27:11,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:27:11,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-25 04:27:11,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:11,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:11,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:27:11,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:27:11,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 04:27:11,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:27:11,759 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:27:11,760 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [107338653] [2020-09-25 04:27:11,760 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:27:11,760 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 04:27:11,761 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16093376] [2020-09-25 04:27:11,762 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:27:11,763 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:27:11,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:27:11,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:27:11,764 INFO L87 Difference]: Start difference. First operand 1330 states and 1680 transitions. Second operand 7 states. [2020-09-25 04:27:14,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:27:14,199 INFO L93 Difference]: Finished difference Result 3922 states and 5203 transitions. [2020-09-25 04:27:14,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 04:27:14,201 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 195 [2020-09-25 04:27:14,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:27:14,228 INFO L225 Difference]: With dead ends: 3922 [2020-09-25 04:27:14,228 INFO L226 Difference]: Without dead ends: 2614 [2020-09-25 04:27:14,235 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 04:27:14,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2614 states. [2020-09-25 04:27:14,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2614 to 2431. [2020-09-25 04:27:14,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2431 states. [2020-09-25 04:27:14,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2431 states to 2431 states and 3117 transitions. [2020-09-25 04:27:14,360 INFO L78 Accepts]: Start accepts. Automaton has 2431 states and 3117 transitions. Word has length 195 [2020-09-25 04:27:14,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:27:14,360 INFO L479 AbstractCegarLoop]: Abstraction has 2431 states and 3117 transitions. [2020-09-25 04:27:14,360 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:27:14,360 INFO L276 IsEmpty]: Start isEmpty. Operand 2431 states and 3117 transitions. [2020-09-25 04:27:14,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-09-25 04:27:14,373 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:27:14,374 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:27:14,374 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 04:27:14,374 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:27:14,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:27:14,375 INFO L82 PathProgramCache]: Analyzing trace with hash -1228146501, now seen corresponding path program 1 times [2020-09-25 04:27:14,375 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:27:14,375 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1148267449] [2020-09-25 04:27:14,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:27:14,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:14,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:14,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:14,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:15,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:15,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:18,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:18,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:18,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:19,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:19,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 210 [2020-09-25 04:27:19,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 04:27:19,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 04:27:19,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:19,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:19,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 04:27:19,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-09-25 04:27:19,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-09-25 04:27:19,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:27:19,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:27:19,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:19,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:19,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:19,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:27:19,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:27:19,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 04:27:19,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:19,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:19,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:27:19,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:27:19,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:27:19,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:27:19,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:27:19,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:19,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:19,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:19,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 04:27:19,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:27:19,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-09-25 04:27:19,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:19,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:19,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:27:19,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:27:19,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 04:27:19,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:27:20,062 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:27:20,064 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1148267449] [2020-09-25 04:27:20,064 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:27:20,065 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 04:27:20,065 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345372829] [2020-09-25 04:27:20,066 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 04:27:20,066 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:27:20,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 04:27:20,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 04:27:20,068 INFO L87 Difference]: Start difference. First operand 2431 states and 3117 transitions. Second operand 8 states. [2020-09-25 04:27:24,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:27:24,527 INFO L93 Difference]: Finished difference Result 7051 states and 9367 transitions. [2020-09-25 04:27:24,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 04:27:24,528 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 199 [2020-09-25 04:27:24,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:27:24,557 INFO L225 Difference]: With dead ends: 7051 [2020-09-25 04:27:24,557 INFO L226 Difference]: Without dead ends: 4422 [2020-09-25 04:27:24,570 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2020-09-25 04:27:24,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4422 states. [2020-09-25 04:27:24,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4422 to 4347. [2020-09-25 04:27:24,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4347 states. [2020-09-25 04:27:24,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4347 states to 4347 states and 5413 transitions. [2020-09-25 04:27:24,712 INFO L78 Accepts]: Start accepts. Automaton has 4347 states and 5413 transitions. Word has length 199 [2020-09-25 04:27:24,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:27:24,712 INFO L479 AbstractCegarLoop]: Abstraction has 4347 states and 5413 transitions. [2020-09-25 04:27:24,712 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 04:27:24,712 INFO L276 IsEmpty]: Start isEmpty. Operand 4347 states and 5413 transitions. [2020-09-25 04:27:24,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-09-25 04:27:24,730 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:27:24,730 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:27:24,730 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 04:27:24,731 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:27:24,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:27:24,731 INFO L82 PathProgramCache]: Analyzing trace with hash -1612061781, now seen corresponding path program 1 times [2020-09-25 04:27:24,731 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:27:24,732 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [992407506] [2020-09-25 04:27:24,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:27:24,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:24,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:24,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:24,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:25,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:25,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:25,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:29,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:29,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-09-25 04:27:29,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 04:27:29,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 04:27:29,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:29,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:29,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:27:29,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 04:27:29,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 04:27:29,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:27:29,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:27:29,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:29,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:29,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:29,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:27:29,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:27:29,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 04:27:29,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:29,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:29,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:27:29,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:27:29,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:27:29,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:27:29,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:27:29,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:29,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:29,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:29,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 04:27:29,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:27:29,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 04:27:29,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:29,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:29,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:27:29,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:27:29,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 04:27:29,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:27:29,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 04:27:29,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:29,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:29,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:29,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 04:27:29,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:27:29,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-09-25 04:27:29,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:29,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:29,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:27:29,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:27:29,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 04:27:29,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:27:30,044 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 43 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:27:30,045 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [992407506] [2020-09-25 04:27:30,045 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:27:30,045 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:27:30,045 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044751904] [2020-09-25 04:27:30,046 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:27:30,046 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:27:30,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:27:30,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:27:30,047 INFO L87 Difference]: Start difference. First operand 4347 states and 5413 transitions. Second operand 7 states. [2020-09-25 04:27:33,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:27:33,851 INFO L93 Difference]: Finished difference Result 11988 states and 16648 transitions. [2020-09-25 04:27:33,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 04:27:33,851 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 213 [2020-09-25 04:27:33,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:27:33,910 INFO L225 Difference]: With dead ends: 11988 [2020-09-25 04:27:33,910 INFO L226 Difference]: Without dead ends: 7663 [2020-09-25 04:27:33,932 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 04:27:33,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7663 states. [2020-09-25 04:27:34,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7663 to 6748. [2020-09-25 04:27:34,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6748 states. [2020-09-25 04:27:34,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6748 states to 6748 states and 8153 transitions. [2020-09-25 04:27:34,203 INFO L78 Accepts]: Start accepts. Automaton has 6748 states and 8153 transitions. Word has length 213 [2020-09-25 04:27:34,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:27:34,204 INFO L479 AbstractCegarLoop]: Abstraction has 6748 states and 8153 transitions. [2020-09-25 04:27:34,204 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:27:34,204 INFO L276 IsEmpty]: Start isEmpty. Operand 6748 states and 8153 transitions. [2020-09-25 04:27:34,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-09-25 04:27:34,226 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:27:34,226 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:27:34,226 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 04:27:34,227 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:27:34,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:27:34,227 INFO L82 PathProgramCache]: Analyzing trace with hash 556027229, now seen corresponding path program 1 times [2020-09-25 04:27:34,227 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:27:34,228 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1324931365] [2020-09-25 04:27:34,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:27:34,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:34,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:34,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:34,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:34,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking...