/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label39.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 07:51:44,783 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 07:51:44,786 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 07:51:44,813 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 07:51:44,813 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 07:51:44,815 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 07:51:44,816 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 07:51:44,820 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 07:51:44,822 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 07:51:44,825 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 07:51:44,826 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 07:51:44,830 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 07:51:44,830 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 07:51:44,832 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 07:51:44,833 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 07:51:44,834 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 07:51:44,835 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 07:51:44,837 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 07:51:44,838 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 07:51:44,840 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 07:51:44,842 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 07:51:44,843 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 07:51:44,844 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 07:51:44,845 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 07:51:44,848 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 07:51:44,848 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 07:51:44,848 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 07:51:44,849 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 07:51:44,850 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 07:51:44,851 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 07:51:44,851 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 07:51:44,852 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 07:51:44,853 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 07:51:44,854 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 07:51:44,855 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 07:51:44,856 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 07:51:44,856 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 07:51:44,857 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 07:51:44,857 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 07:51:44,858 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 07:51:44,859 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 07:51:44,860 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 07:51:44,886 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 07:51:44,887 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 07:51:44,888 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 07:51:44,888 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 07:51:44,888 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 07:51:44,889 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 07:51:44,889 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 07:51:44,889 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 07:51:44,889 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 07:51:44,889 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 07:51:44,890 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 07:51:44,890 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 07:51:44,890 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 07:51:44,890 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 07:51:44,890 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 07:51:44,891 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 07:51:44,891 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 07:51:44,891 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 07:51:44,891 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 07:51:44,892 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 07:51:44,892 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 07:51:44,892 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:51:44,892 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 07:51:44,892 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 07:51:44,893 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 07:51:44,893 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 07:51:44,893 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 07:51:44,893 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 07:51:44,893 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 07:51:44,894 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; [2020-09-25 07:51:45,356 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 07:51:45,374 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 07:51:45,378 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 07:51:45,380 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 07:51:45,381 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 07:51:45,382 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label39.c [2020-09-25 07:51:45,482 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c5a72d6e8/12e760a978b845168a8ebaed4f43c946/FLAG0e661efe5 [2020-09-25 07:51:46,157 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 07:51:46,158 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label39.c [2020-09-25 07:51:46,174 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c5a72d6e8/12e760a978b845168a8ebaed4f43c946/FLAG0e661efe5 [2020-09-25 07:51:46,367 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c5a72d6e8/12e760a978b845168a8ebaed4f43c946 [2020-09-25 07:51:46,382 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 07:51:46,389 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 07:51:46,390 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 07:51:46,390 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 07:51:46,394 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 07:51:46,396 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:51:46" (1/1) ... [2020-09-25 07:51:46,400 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11e01188 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:51:46, skipping insertion in model container [2020-09-25 07:51:46,400 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:51:46" (1/1) ... [2020-09-25 07:51:46,410 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 07:51:46,468 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 07:51:46,942 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:51:46,948 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 07:51:47,158 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:51:47,178 INFO L208 MainTranslator]: Completed translation [2020-09-25 07:51:47,179 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:51:47 WrapperNode [2020-09-25 07:51:47,179 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 07:51:47,180 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 07:51:47,180 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 07:51:47,180 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 07:51:47,197 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:51:47" (1/1) ... [2020-09-25 07:51:47,197 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:51:47" (1/1) ... [2020-09-25 07:51:47,217 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:51:47" (1/1) ... [2020-09-25 07:51:47,217 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:51:47" (1/1) ... [2020-09-25 07:51:47,258 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:51:47" (1/1) ... [2020-09-25 07:51:47,275 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:51:47" (1/1) ... [2020-09-25 07:51:47,280 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:51:47" (1/1) ... [2020-09-25 07:51:47,287 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 07:51:47,288 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 07:51:47,288 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 07:51:47,288 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 07:51:47,291 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:51:47" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:51:47,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 07:51:47,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 07:51:47,376 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 07:51:47,376 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 07:51:47,376 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 07:51:47,376 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 07:51:47,376 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 07:51:47,377 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 07:51:47,377 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 07:51:47,377 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 07:51:47,377 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 07:51:48,704 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 07:51:48,704 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 07:51:48,722 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:51:48 BoogieIcfgContainer [2020-09-25 07:51:48,722 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 07:51:48,726 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 07:51:48,726 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 07:51:48,731 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 07:51:48,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 07:51:46" (1/3) ... [2020-09-25 07:51:48,733 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b1784fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:51:48, skipping insertion in model container [2020-09-25 07:51:48,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:51:47" (2/3) ... [2020-09-25 07:51:48,734 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b1784fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:51:48, skipping insertion in model container [2020-09-25 07:51:48,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:51:48" (3/3) ... [2020-09-25 07:51:48,736 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label39.c [2020-09-25 07:51:48,747 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 07:51:48,763 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 07:51:48,786 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 07:51:48,828 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 07:51:48,829 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 07:51:48,830 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 07:51:48,830 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 07:51:48,830 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 07:51:48,830 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 07:51:48,830 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 07:51:48,831 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 07:51:48,869 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 07:51:48,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-09-25 07:51:48,895 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:51:48,896 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] [2020-09-25 07:51:48,897 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:51:48,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:51:48,904 INFO L82 PathProgramCache]: Analyzing trace with hash -2068005297, now seen corresponding path program 1 times [2020-09-25 07:51:48,915 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:51:48,915 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [731222754] [2020-09-25 07:51:48,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:51:49,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:49,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:49,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:50,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:50,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:51,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:52,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:54,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:54,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-09-25 07:51:54,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 07:51:54,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-09-25 07:51:54,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:54,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:54,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:51:54,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 07:51:54,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-09-25 07:51:54,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-09-25 07:51:54,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:51:54,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:54,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:54,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:54,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 07:51:54,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:51:54,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 07:51:54,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:54,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:54,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:51:54,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:51:54,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 07:51:54,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:51:54,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:51:54,591 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [731222754] [2020-09-25 07:51:54,594 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:51:54,594 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 07:51:54,596 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283981378] [2020-09-25 07:51:54,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 07:51:54,605 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:51:54,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 07:51:54,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 07:51:54,631 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 07:51:56,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:51:56,788 INFO L93 Difference]: Finished difference Result 1268 states and 1667 transitions. [2020-09-25 07:51:56,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 07:51:56,792 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 160 [2020-09-25 07:51:56,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:51:56,828 INFO L225 Difference]: With dead ends: 1268 [2020-09-25 07:51:56,829 INFO L226 Difference]: Without dead ends: 694 [2020-09-25 07:51:56,838 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:51:56,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2020-09-25 07:51:56,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 603. [2020-09-25 07:51:56,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 07:51:56,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 719 transitions. [2020-09-25 07:51:56,939 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 719 transitions. Word has length 160 [2020-09-25 07:51:56,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:51:56,941 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 719 transitions. [2020-09-25 07:51:56,941 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 07:51:56,941 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 719 transitions. [2020-09-25 07:51:56,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-09-25 07:51:56,950 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:51:56,950 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2020-09-25 07:51:56,951 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 07:51:56,951 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:51:56,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:51:56,951 INFO L82 PathProgramCache]: Analyzing trace with hash 305686135, now seen corresponding path program 1 times [2020-09-25 07:51:56,952 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:51:56,952 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [905009304] [2020-09-25 07:51:56,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:51:56,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:57,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:57,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:57,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:57,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:01,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:01,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-09-25 07:52:01,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 07:52:01,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 07:52:01,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:01,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:01,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:52:01,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 07:52:01,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 07:52:01,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:52:02,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:52:02,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:02,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:02,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:02,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 07:52:02,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:52:02,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 07:52:02,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:02,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:02,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:52:02,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:52:02,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 07:52:02,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:52:02,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 07:52:02,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:02,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:02,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:02,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 07:52:02,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:52:02,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-09-25 07:52:02,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:02,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:02,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:52:02,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:52:02,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 07:52:02,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:52:02,382 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:52:02,382 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [905009304] [2020-09-25 07:52:02,383 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:52:02,383 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 07:52:02,383 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541560749] [2020-09-25 07:52:02,388 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:52:02,388 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:52:02,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:52:02,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:52:02,389 INFO L87 Difference]: Start difference. First operand 603 states and 719 transitions. Second operand 7 states. [2020-09-25 07:52:05,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:52:05,032 INFO L93 Difference]: Finished difference Result 1538 states and 1910 transitions. [2020-09-25 07:52:05,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 07:52:05,033 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 181 [2020-09-25 07:52:05,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:52:05,040 INFO L225 Difference]: With dead ends: 1538 [2020-09-25 07:52:05,040 INFO L226 Difference]: Without dead ends: 959 [2020-09-25 07:52:05,044 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 07:52:05,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2020-09-25 07:52:05,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 901. [2020-09-25 07:52:05,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 901 states. [2020-09-25 07:52:05,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 1109 transitions. [2020-09-25 07:52:05,097 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 1109 transitions. Word has length 181 [2020-09-25 07:52:05,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:52:05,098 INFO L479 AbstractCegarLoop]: Abstraction has 901 states and 1109 transitions. [2020-09-25 07:52:05,098 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:52:05,098 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 1109 transitions. [2020-09-25 07:52:05,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-09-25 07:52:05,104 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:52:05,105 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:52:05,105 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 07:52:05,105 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:52:05,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:52:05,106 INFO L82 PathProgramCache]: Analyzing trace with hash -166930083, now seen corresponding path program 1 times [2020-09-25 07:52:05,106 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:52:05,106 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1167815215] [2020-09-25 07:52:05,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:52:05,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:05,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:05,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:05,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:06,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:06,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:08,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:09,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:10,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:10,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:10,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-09-25 07:52:10,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 07:52:10,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-09-25 07:52:10,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:10,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:10,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:52:10,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 07:52:10,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 07:52:10,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:52:10,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:52:10,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:10,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:10,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:10,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 07:52:10,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:52:10,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 07:52:10,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:10,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:10,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:52:10,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:52:10,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 07:52:10,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:52:10,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 07:52:10,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:10,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:10,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:10,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:52:10,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:52:10,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-25 07:52:10,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:10,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:10,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:52:10,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:52:10,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 07:52:10,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:52:10,445 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:52:10,445 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1167815215] [2020-09-25 07:52:10,445 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:52:10,446 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 07:52:10,446 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377785273] [2020-09-25 07:52:10,447 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:52:10,448 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:52:10,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:52:10,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:52:10,449 INFO L87 Difference]: Start difference. First operand 901 states and 1109 transitions. Second operand 7 states. [2020-09-25 07:52:13,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:52:13,027 INFO L93 Difference]: Finished difference Result 2544 states and 3295 transitions. [2020-09-25 07:52:13,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 07:52:13,027 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 182 [2020-09-25 07:52:13,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:52:13,045 INFO L225 Difference]: With dead ends: 2544 [2020-09-25 07:52:13,046 INFO L226 Difference]: Without dead ends: 1667 [2020-09-25 07:52:13,052 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 07:52:13,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1667 states. [2020-09-25 07:52:13,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1667 to 1554. [2020-09-25 07:52:13,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1554 states. [2020-09-25 07:52:13,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1554 states to 1554 states and 1941 transitions. [2020-09-25 07:52:13,148 INFO L78 Accepts]: Start accepts. Automaton has 1554 states and 1941 transitions. Word has length 182 [2020-09-25 07:52:13,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:52:13,149 INFO L479 AbstractCegarLoop]: Abstraction has 1554 states and 1941 transitions. [2020-09-25 07:52:13,149 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:52:13,149 INFO L276 IsEmpty]: Start isEmpty. Operand 1554 states and 1941 transitions. [2020-09-25 07:52:13,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-09-25 07:52:13,158 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:52:13,158 INFO L422 BasicCegarLoop]: trace histogram [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 07:52:13,159 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 07:52:13,159 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:52:13,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:52:13,159 INFO L82 PathProgramCache]: Analyzing trace with hash 621217626, now seen corresponding path program 1 times [2020-09-25 07:52:13,160 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:52:13,161 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1688723411] [2020-09-25 07:52:13,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:52:13,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:13,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:13,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:13,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:14,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:15,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:15,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:16,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:18,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:18,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:18,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-09-25 07:52:18,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 07:52:18,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 07:52:18,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:18,217 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:18,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:52:18,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-09-25 07:52:18,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-09-25 07:52:18,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:52:18,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:52:18,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:18,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:18,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:18,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 07:52:18,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:52:18,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 07:52:18,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:18,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:18,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:52:18,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:52:18,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:52:18,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:52:18,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 07:52:18,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:18,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:18,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:18,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:52:18,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:52:18,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 07:52:18,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:18,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:18,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:52:18,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:52:18,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 07:52:18,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:52:18,535 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:52:18,536 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1688723411] [2020-09-25 07:52:18,536 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:52:18,536 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 07:52:18,537 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959430942] [2020-09-25 07:52:18,537 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:52:18,538 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:52:18,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:52:18,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:52:18,538 INFO L87 Difference]: Start difference. First operand 1554 states and 1941 transitions. Second operand 5 states. [2020-09-25 07:52:20,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:52:20,604 INFO L93 Difference]: Finished difference Result 4193 states and 5395 transitions. [2020-09-25 07:52:20,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 07:52:20,605 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 189 [2020-09-25 07:52:20,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:52:20,626 INFO L225 Difference]: With dead ends: 4193 [2020-09-25 07:52:20,626 INFO L226 Difference]: Without dead ends: 2663 [2020-09-25 07:52:20,633 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 07:52:20,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2663 states. [2020-09-25 07:52:20,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2663 to 1991. [2020-09-25 07:52:20,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1991 states. [2020-09-25 07:52:20,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1991 states to 1991 states and 2518 transitions. [2020-09-25 07:52:20,717 INFO L78 Accepts]: Start accepts. Automaton has 1991 states and 2518 transitions. Word has length 189 [2020-09-25 07:52:20,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:52:20,719 INFO L479 AbstractCegarLoop]: Abstraction has 1991 states and 2518 transitions. [2020-09-25 07:52:20,719 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:52:20,719 INFO L276 IsEmpty]: Start isEmpty. Operand 1991 states and 2518 transitions. [2020-09-25 07:52:20,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-09-25 07:52:20,730 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:52:20,730 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1] [2020-09-25 07:52:20,730 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 07:52:20,730 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:52:20,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:52:20,731 INFO L82 PathProgramCache]: Analyzing trace with hash -1816533928, now seen corresponding path program 1 times [2020-09-25 07:52:20,731 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:52:20,731 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1813185174] [2020-09-25 07:52:20,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:52:20,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:20,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:20,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:21,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:21,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:21,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:21,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:22,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:22,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:24,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:25,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:25,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-09-25 07:52:25,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 07:52:25,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 07:52:25,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:25,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:25,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:52:25,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-09-25 07:52:25,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 147 [2020-09-25 07:52:25,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:52:25,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:52:25,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:25,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:25,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:25,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 07:52:25,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:52:25,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 07:52:25,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:25,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:25,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:52:25,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:52:25,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:52:25,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 07:52:25,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 07:52:25,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:25,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:25,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:25,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 07:52:25,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:52:25,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 07:52:25,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:25,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:25,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:52:25,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:52:25,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 07:52:25,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:52:26,043 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:52:26,044 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1813185174] [2020-09-25 07:52:26,044 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:52:26,044 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 07:52:26,044 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146455263] [2020-09-25 07:52:26,045 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:52:26,045 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:52:26,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:52:26,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:52:26,046 INFO L87 Difference]: Start difference. First operand 1991 states and 2518 transitions. Second operand 5 states. [2020-09-25 07:52:28,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:52:28,131 INFO L93 Difference]: Finished difference Result 4677 states and 6032 transitions. [2020-09-25 07:52:28,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 07:52:28,132 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 190 [2020-09-25 07:52:28,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:52:28,142 INFO L225 Difference]: With dead ends: 4677 [2020-09-25 07:52:28,143 INFO L226 Difference]: Without dead ends: 1947 [2020-09-25 07:52:28,153 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 07:52:28,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1947 states. [2020-09-25 07:52:28,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1947 to 1937. [2020-09-25 07:52:28,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1937 states. [2020-09-25 07:52:28,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1937 states to 1937 states and 2383 transitions. [2020-09-25 07:52:28,210 INFO L78 Accepts]: Start accepts. Automaton has 1937 states and 2383 transitions. Word has length 190 [2020-09-25 07:52:28,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:52:28,211 INFO L479 AbstractCegarLoop]: Abstraction has 1937 states and 2383 transitions. [2020-09-25 07:52:28,211 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:52:28,211 INFO L276 IsEmpty]: Start isEmpty. Operand 1937 states and 2383 transitions. [2020-09-25 07:52:28,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-09-25 07:52:28,221 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:52:28,222 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:52:28,222 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 07:52:28,222 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:52:28,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:52:28,222 INFO L82 PathProgramCache]: Analyzing trace with hash -220137183, now seen corresponding path program 1 times [2020-09-25 07:52:28,223 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:52:28,223 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [664676518] [2020-09-25 07:52:28,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:52:28,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:28,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:28,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:28,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:28,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:28,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:29,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:31,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:31,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:32,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:32,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:33,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:33,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:33,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-09-25 07:52:33,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 07:52:33,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5047 [2020-09-25 07:52:33,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:33,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:33,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:52:33,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-09-25 07:52:33,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 147 [2020-09-25 07:52:33,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:52:33,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:52:33,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:33,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:33,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:33,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 07:52:33,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:52:33,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 07:52:33,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:33,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:33,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:52:33,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:52:33,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:52:33,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:52:33,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 07:52:33,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:33,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:33,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:33,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-25 07:52:33,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:52:33,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-25 07:52:33,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:33,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:33,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:52:33,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:52:33,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 07:52:33,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:52:33,582 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 33 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:52:33,583 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [664676518] [2020-09-25 07:52:33,583 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:52:33,583 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 07:52:33,583 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021475623] [2020-09-25 07:52:33,584 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 07:52:33,584 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:52:33,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 07:52:33,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 07:52:33,585 INFO L87 Difference]: Start difference. First operand 1937 states and 2383 transitions. Second operand 6 states. [2020-09-25 07:52:35,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:52:35,448 INFO L93 Difference]: Finished difference Result 4870 states and 6128 transitions. [2020-09-25 07:52:35,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 07:52:35,449 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 203 [2020-09-25 07:52:35,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:52:35,464 INFO L225 Difference]: With dead ends: 4870 [2020-09-25 07:52:35,464 INFO L226 Difference]: Without dead ends: 2957 [2020-09-25 07:52:35,472 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:52:35,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2957 states. [2020-09-25 07:52:35,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2957 to 2793. [2020-09-25 07:52:35,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2793 states. [2020-09-25 07:52:35,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2793 states to 2793 states and 3478 transitions. [2020-09-25 07:52:35,546 INFO L78 Accepts]: Start accepts. Automaton has 2793 states and 3478 transitions. Word has length 203 [2020-09-25 07:52:35,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:52:35,547 INFO L479 AbstractCegarLoop]: Abstraction has 2793 states and 3478 transitions. [2020-09-25 07:52:35,547 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 07:52:35,547 INFO L276 IsEmpty]: Start isEmpty. Operand 2793 states and 3478 transitions. [2020-09-25 07:52:35,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-09-25 07:52:35,559 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:52:35,560 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:52:35,560 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 07:52:35,560 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:52:35,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:52:35,561 INFO L82 PathProgramCache]: Analyzing trace with hash -1773335206, now seen corresponding path program 1 times [2020-09-25 07:52:35,561 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:52:35,561 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [929175032] [2020-09-25 07:52:35,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:52:35,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:35,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:35,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:36,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking...