/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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/Problem10_label17.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 11:18:47,792 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:18:47,797 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:18:47,827 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:18:47,827 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:18:47,829 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:18:47,830 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:18:47,832 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:18:47,833 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:18:47,834 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:18:47,835 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:18:47,836 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:18:47,836 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:18:47,837 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:18:47,838 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:18:47,840 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:18:47,840 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:18:47,842 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:18:47,844 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:18:47,846 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:18:47,848 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:18:47,849 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:18:47,851 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:18:47,852 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:18:47,855 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:18:47,856 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:18:47,856 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:18:47,857 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:18:47,858 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:18:47,859 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:18:47,859 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:18:47,860 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:18:47,861 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:18:47,862 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:18:47,863 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:18:47,863 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:18:47,864 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:18:47,864 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:18:47,865 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:18:47,866 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:18:47,867 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:18:47,867 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 11:18:47,912 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:18:47,913 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:18:47,914 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:18:47,914 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:18:47,915 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:18:47,915 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:18:47,915 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:18:47,915 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:18:47,915 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:18:47,916 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:18:47,917 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:18:47,918 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:18:47,918 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:18:47,918 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:18:47,918 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:18:47,918 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:18:47,919 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:18:47,919 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:18:47,919 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:18:47,919 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:18:47,919 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:18:47,920 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:18:47,920 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:18:47,920 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:18:47,920 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:18:47,920 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:18:47,921 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:18:47,921 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:18:47,921 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:18:47,921 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;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=SMALLESTAMONGWIDE;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=SMALLESTAMONGWIDE;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=SMALLESTAMONGWIDE;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; [2020-09-25 11:18:48,370 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:18:48,387 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:18:48,391 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:18:48,393 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:18:48,393 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:18:48,395 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label17.c [2020-09-25 11:18:48,471 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/61be94a65/93fc0278a3f840049d3acb9282f87d80/FLAGbdb00555e [2020-09-25 11:18:49,116 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:18:49,117 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label17.c [2020-09-25 11:18:49,132 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/61be94a65/93fc0278a3f840049d3acb9282f87d80/FLAGbdb00555e [2020-09-25 11:18:49,346 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/61be94a65/93fc0278a3f840049d3acb9282f87d80 [2020-09-25 11:18:49,359 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:18:49,365 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:18:49,366 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:18:49,366 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:18:49,371 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:18:49,372 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:18:49" (1/1) ... [2020-09-25 11:18:49,376 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@aed4350 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:49, skipping insertion in model container [2020-09-25 11:18:49,376 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:18:49" (1/1) ... [2020-09-25 11:18:49,385 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:18:49,441 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:18:49,936 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:18:49,946 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:18:50,165 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:18:50,192 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:18:50,193 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:50 WrapperNode [2020-09-25 11:18:50,193 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:18:50,194 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:18:50,194 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:18:50,194 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:18:50,209 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:50" (1/1) ... [2020-09-25 11:18:50,209 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:50" (1/1) ... [2020-09-25 11:18:50,229 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:50" (1/1) ... [2020-09-25 11:18:50,229 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:50" (1/1) ... [2020-09-25 11:18:50,269 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:50" (1/1) ... [2020-09-25 11:18:50,286 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:50" (1/1) ... [2020-09-25 11:18:50,295 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:50" (1/1) ... [2020-09-25 11:18:50,305 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:18:50,306 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:18:50,306 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:18:50,306 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:18:50,308 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:50" (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 11:18:50,383 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:18:50,383 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:18:50,384 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 11:18:50,384 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:18:50,384 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 11:18:50,384 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:18:50,384 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 11:18:50,384 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 11:18:50,385 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:18:50,385 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:18:50,385 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:18:51,765 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:18:51,766 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 11:18:51,775 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:18:51 BoogieIcfgContainer [2020-09-25 11:18:51,775 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:18:51,779 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:18:51,779 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:18:51,783 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:18:51,784 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:18:49" (1/3) ... [2020-09-25 11:18:51,785 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39193d0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:18:51, skipping insertion in model container [2020-09-25 11:18:51,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:50" (2/3) ... [2020-09-25 11:18:51,787 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39193d0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:18:51, skipping insertion in model container [2020-09-25 11:18:51,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:18:51" (3/3) ... [2020-09-25 11:18:51,791 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label17.c [2020-09-25 11:18:51,805 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:18:51,822 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 11:18:51,846 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 11:18:51,887 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:18:51,887 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:18:51,888 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:18:51,888 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:18:51,888 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:18:51,888 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:18:51,888 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:18:51,889 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:18:51,919 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 11:18:51,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-09-25 11:18:51,929 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:18:51,930 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] [2020-09-25 11:18:51,931 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:18:51,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:18:51,939 INFO L82 PathProgramCache]: Analyzing trace with hash -796596049, now seen corresponding path program 1 times [2020-09-25 11:18:51,948 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:18:51,948 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1975991033] [2020-09-25 11:18:51,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:18:52,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:52,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:52,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:52,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:52,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:52,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-09-25 11:18:52,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:18:52,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 715 [2020-09-25 11:18:52,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:52,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:52,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:18:52,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:18:52,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 11:18:52,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 11:18:52,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:18:52,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:53,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:53,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:53,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:18:53,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:53,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 11:18:53,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:53,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:53,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:18:53,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:18:53,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:18:53,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 11:18:53,077 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 11:18:53,078 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1975991033] [2020-09-25 11:18:53,081 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:18:53,082 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 11:18:53,083 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911540739] [2020-09-25 11:18:53,093 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 11:18:53,094 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:18:53,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 11:18:53,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 11:18:53,125 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 11:18:55,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:18:55,363 INFO L93 Difference]: Finished difference Result 1104 states and 1521 transitions. [2020-09-25 11:18:55,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 11:18:55,365 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 49 [2020-09-25 11:18:55,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:18:55,389 INFO L225 Difference]: With dead ends: 1104 [2020-09-25 11:18:55,389 INFO L226 Difference]: Without dead ends: 578 [2020-09-25 11:18:55,399 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:18:55,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-09-25 11:18:55,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 544. [2020-09-25 11:18:55,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2020-09-25 11:18:55,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 655 transitions. [2020-09-25 11:18:55,570 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 655 transitions. Word has length 49 [2020-09-25 11:18:55,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:18:55,572 INFO L479 AbstractCegarLoop]: Abstraction has 544 states and 655 transitions. [2020-09-25 11:18:55,572 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 11:18:55,573 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 655 transitions. [2020-09-25 11:18:55,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-09-25 11:18:55,600 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:18:55,600 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:18:55,601 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:18:55,601 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:18:55,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:18:55,602 INFO L82 PathProgramCache]: Analyzing trace with hash 1427265920, now seen corresponding path program 1 times [2020-09-25 11:18:55,604 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:18:55,604 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [694035924] [2020-09-25 11:18:55,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:18:55,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:55,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:55,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:56,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:56,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:56,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:56,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:57,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:00,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:00,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-09-25 11:19:00,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 11:19:00,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 11:19:00,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:00,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:00,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:19:00,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 11:19:00,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-09-25 11:19:00,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:00,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:19:00,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:00,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:00,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:00,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:19:00,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:00,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 11:19:00,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:00,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:00,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:19:00,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:19:00,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:19:00,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:19:00,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:19:00,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:00,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:00,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:01,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:01,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 11:19:01,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:19:01,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-09-25 11:19:01,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:01,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:01,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:19:01,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:19:01,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 11:19:01,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:01,124 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 25 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 11:19:01,125 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [694035924] [2020-09-25 11:19:01,125 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:19:01,125 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 11:19:01,126 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645261843] [2020-09-25 11:19:01,128 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:19:01,128 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:19:01,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:19:01,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:19:01,129 INFO L87 Difference]: Start difference. First operand 544 states and 655 transitions. Second operand 5 states. [2020-09-25 11:19:02,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:19:02,743 INFO L93 Difference]: Finished difference Result 1224 states and 1530 transitions. [2020-09-25 11:19:02,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 11:19:02,749 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 128 [2020-09-25 11:19:02,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:19:02,756 INFO L225 Difference]: With dead ends: 1224 [2020-09-25 11:19:02,756 INFO L226 Difference]: Without dead ends: 695 [2020-09-25 11:19:02,759 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 11:19:02,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2020-09-25 11:19:02,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 695. [2020-09-25 11:19:02,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2020-09-25 11:19:02,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 850 transitions. [2020-09-25 11:19:02,792 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 850 transitions. Word has length 128 [2020-09-25 11:19:02,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:19:02,793 INFO L479 AbstractCegarLoop]: Abstraction has 695 states and 850 transitions. [2020-09-25 11:19:02,793 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:19:02,793 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 850 transitions. [2020-09-25 11:19:02,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-09-25 11:19:02,797 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:19:02,798 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:19:02,798 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 11:19:02,798 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:19:02,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:19:02,799 INFO L82 PathProgramCache]: Analyzing trace with hash -863517790, now seen corresponding path program 1 times [2020-09-25 11:19:02,799 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:19:02,800 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [230734872] [2020-09-25 11:19:02,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:19:02,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:02,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:02,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:02,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:03,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:03,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:06,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:06,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:07,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:07,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:07,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-09-25 11:19:07,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 11:19:07,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-09-25 11:19:07,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:07,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:07,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:19:07,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:19:07,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-09-25 11:19:07,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:07,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:19:07,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:07,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:08,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:08,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:19:08,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:08,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 11:19:08,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:08,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:08,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:19:08,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:19:08,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:19:08,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:08,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:19:08,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:08,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:08,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:08,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 11:19:08,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:08,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-09-25 11:19:08,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:08,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:08,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:19:08,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:19:08,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 11:19:08,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:08,295 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:19:08,296 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [230734872] [2020-09-25 11:19:08,296 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:19:08,296 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 11:19:08,297 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757420459] [2020-09-25 11:19:08,297 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 11:19:08,297 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:19:08,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 11:19:08,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 11:19:08,298 INFO L87 Difference]: Start difference. First operand 695 states and 850 transitions. Second operand 8 states. [2020-09-25 11:19:11,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:19:11,712 INFO L93 Difference]: Finished difference Result 1643 states and 2088 transitions. [2020-09-25 11:19:11,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 11:19:11,713 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 138 [2020-09-25 11:19:11,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:19:11,720 INFO L225 Difference]: With dead ends: 1643 [2020-09-25 11:19:11,720 INFO L226 Difference]: Without dead ends: 1113 [2020-09-25 11:19:11,723 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-09-25 11:19:11,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1113 states. [2020-09-25 11:19:11,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1113 to 1044. [2020-09-25 11:19:11,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1044 states. [2020-09-25 11:19:11,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1044 states to 1044 states and 1270 transitions. [2020-09-25 11:19:11,765 INFO L78 Accepts]: Start accepts. Automaton has 1044 states and 1270 transitions. Word has length 138 [2020-09-25 11:19:11,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:19:11,766 INFO L479 AbstractCegarLoop]: Abstraction has 1044 states and 1270 transitions. [2020-09-25 11:19:11,766 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 11:19:11,766 INFO L276 IsEmpty]: Start isEmpty. Operand 1044 states and 1270 transitions. [2020-09-25 11:19:11,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-09-25 11:19:11,770 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:19:11,770 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:19:11,771 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 11:19:11,771 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:19:11,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:19:11,771 INFO L82 PathProgramCache]: Analyzing trace with hash 1456961498, now seen corresponding path program 1 times [2020-09-25 11:19:11,772 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:19:11,772 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1807506461] [2020-09-25 11:19:11,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:19:11,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:11,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:12,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:12,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:12,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:12,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:14,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:14,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-09-25 11:19:14,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 11:19:14,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2599 [2020-09-25 11:19:14,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:14,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:14,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:19:14,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:19:14,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-09-25 11:19:14,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 11:19:14,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:19:14,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:14,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:14,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:14,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:19:14,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:14,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 11:19:14,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:14,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:14,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:19:14,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:19:14,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:19:14,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 28 [2020-09-25 11:19:14,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:19:14,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:14,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:14,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:14,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 11:19:14,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:14,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-09-25 11:19:14,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:14,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:14,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:19:14,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:19:14,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 11:19:14,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:14,862 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 7 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:19:14,864 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1807506461] [2020-09-25 11:19:14,864 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:19:14,864 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 11:19:14,865 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698135419] [2020-09-25 11:19:14,865 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 11:19:14,866 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:19:14,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 11:19:14,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 11:19:14,867 INFO L87 Difference]: Start difference. First operand 1044 states and 1270 transitions. Second operand 8 states. [2020-09-25 11:19:18,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:19:18,284 INFO L93 Difference]: Finished difference Result 2330 states and 3029 transitions. [2020-09-25 11:19:18,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 11:19:18,284 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 140 [2020-09-25 11:19:18,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:19:18,295 INFO L225 Difference]: With dead ends: 2330 [2020-09-25 11:19:18,295 INFO L226 Difference]: Without dead ends: 1792 [2020-09-25 11:19:18,298 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-25 11:19:18,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1792 states. [2020-09-25 11:19:18,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1792 to 1693. [2020-09-25 11:19:18,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1693 states. [2020-09-25 11:19:18,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1693 states to 1693 states and 2103 transitions. [2020-09-25 11:19:18,356 INFO L78 Accepts]: Start accepts. Automaton has 1693 states and 2103 transitions. Word has length 140 [2020-09-25 11:19:18,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:19:18,357 INFO L479 AbstractCegarLoop]: Abstraction has 1693 states and 2103 transitions. [2020-09-25 11:19:18,357 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 11:19:18,357 INFO L276 IsEmpty]: Start isEmpty. Operand 1693 states and 2103 transitions. [2020-09-25 11:19:18,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-09-25 11:19:18,361 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:19:18,361 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:19:18,362 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 11:19:18,362 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:19:18,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:19:18,362 INFO L82 PathProgramCache]: Analyzing trace with hash -1274196626, now seen corresponding path program 1 times [2020-09-25 11:19:18,363 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:19:18,363 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [679450931] [2020-09-25 11:19:18,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:19:18,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:18,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:18,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:18,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:20,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:21,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:22,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:22,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-09-25 11:19:22,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 11:19:22,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4274 [2020-09-25 11:19:22,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:22,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:22,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 11:19:22,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:19:22,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-09-25 11:19:22,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:22,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:19:22,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:22,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:22,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:22,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:19:22,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:22,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 11:19:22,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:22,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:22,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:19:22,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:19:22,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 11:19:22,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:22,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:19:22,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:22,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:23,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:23,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-25 11:19:23,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:23,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 310 [2020-09-25 11:19:23,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:23,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:23,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:19:23,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:19:23,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-25 11:19:23,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:23,461 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 15 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:19:23,461 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [679450931] [2020-09-25 11:19:23,461 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:19:23,462 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 11:19:23,462 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308700317] [2020-09-25 11:19:23,463 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 11:19:23,463 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:19:23,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 11:19:23,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-09-25 11:19:23,464 INFO L87 Difference]: Start difference. First operand 1693 states and 2103 transitions. Second operand 12 states. [2020-09-25 11:19:28,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:19:28,086 INFO L93 Difference]: Finished difference Result 3289 states and 4190 transitions. [2020-09-25 11:19:28,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 11:19:28,088 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 157 [2020-09-25 11:19:28,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:19:28,099 INFO L225 Difference]: With dead ends: 3289 [2020-09-25 11:19:28,100 INFO L226 Difference]: Without dead ends: 2080 [2020-09-25 11:19:28,105 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2020-09-25 11:19:28,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2080 states. [2020-09-25 11:19:28,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2080 to 2015. [2020-09-25 11:19:28,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2015 states. [2020-09-25 11:19:28,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2015 states to 2015 states and 2563 transitions. [2020-09-25 11:19:28,186 INFO L78 Accepts]: Start accepts. Automaton has 2015 states and 2563 transitions. Word has length 157 [2020-09-25 11:19:28,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:19:28,186 INFO L479 AbstractCegarLoop]: Abstraction has 2015 states and 2563 transitions. [2020-09-25 11:19:28,186 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 11:19:28,186 INFO L276 IsEmpty]: Start isEmpty. Operand 2015 states and 2563 transitions. [2020-09-25 11:19:28,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-09-25 11:19:28,190 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:19:28,190 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:19:28,191 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 11:19:28,191 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:19:28,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:19:28,191 INFO L82 PathProgramCache]: Analyzing trace with hash 319070558, now seen corresponding path program 1 times [2020-09-25 11:19:28,191 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:19:28,192 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1763971543] [2020-09-25 11:19:28,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:19:28,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:28,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:28,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:28,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:28,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:29,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:29,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:32,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:32,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-09-25 11:19:32,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 11:19:32,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3904 [2020-09-25 11:19:32,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:32,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:32,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:19:32,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 11:19:32,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-09-25 11:19:32,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:19:32,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:19:32,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:32,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:32,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:32,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:19:32,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:32,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 11:19:32,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:32,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:32,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:19:32,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:19:32,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:19:32,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:32,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:19:32,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:32,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:32,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:32,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-09-25 11:19:32,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:32,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 243 [2020-09-25 11:19:32,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:32,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:32,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:19:32,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:19:32,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-09-25 11:19:32,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:32,699 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:19:32,700 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1763971543] [2020-09-25 11:19:32,700 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:19:32,700 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 11:19:32,701 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453019509] [2020-09-25 11:19:32,701 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 11:19:32,701 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:19:32,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 11:19:32,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 11:19:32,702 INFO L87 Difference]: Start difference. First operand 2015 states and 2563 transitions. Second operand 7 states. [2020-09-25 11:19:35,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:19:35,141 INFO L93 Difference]: Finished difference Result 4725 states and 6297 transitions. [2020-09-25 11:19:35,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 11:19:35,141 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 171 [2020-09-25 11:19:35,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:19:35,157 INFO L225 Difference]: With dead ends: 4725 [2020-09-25 11:19:35,157 INFO L226 Difference]: Without dead ends: 2887 [2020-09-25 11:19:35,165 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 11:19:35,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2887 states. [2020-09-25 11:19:35,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2887 to 2809. [2020-09-25 11:19:35,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2809 states. [2020-09-25 11:19:35,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2809 states to 2809 states and 3520 transitions. [2020-09-25 11:19:35,246 INFO L78 Accepts]: Start accepts. Automaton has 2809 states and 3520 transitions. Word has length 171 [2020-09-25 11:19:35,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:19:35,246 INFO L479 AbstractCegarLoop]: Abstraction has 2809 states and 3520 transitions. [2020-09-25 11:19:35,247 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 11:19:35,247 INFO L276 IsEmpty]: Start isEmpty. Operand 2809 states and 3520 transitions. [2020-09-25 11:19:35,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-09-25 11:19:35,251 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:19:35,251 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 11:19:35,252 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 11:19:35,252 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:19:35,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:19:35,252 INFO L82 PathProgramCache]: Analyzing trace with hash -2078590991, now seen corresponding path program 1 times [2020-09-25 11:19:35,252 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:19:35,253 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [750644307] [2020-09-25 11:19:35,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:19:35,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:35,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:35,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:35,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:36,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:36,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:36,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:36,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:37,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:38,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking...