/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label08.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:28:48,060 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:28:48,063 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:28:48,092 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:28:48,094 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:28:48,095 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:28:48,096 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:28:48,100 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:28:48,104 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:28:48,107 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:28:48,108 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:28:48,111 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:28:48,112 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:28:48,113 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:28:48,115 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:28:48,116 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:28:48,118 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:28:48,119 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:28:48,123 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:28:48,127 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:28:48,130 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:28:48,133 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:28:48,135 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:28:48,137 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:28:48,143 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:28:48,143 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:28:48,143 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:28:48,147 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:28:48,147 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:28:48,148 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:28:48,150 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:28:48,150 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:28:48,159 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:28:48,160 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:28:48,161 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:28:48,161 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:28:48,164 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:28:48,164 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:28:48,164 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:28:48,165 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:28:48,166 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:28:48,167 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 13:28:48,210 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:28:48,210 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:28:48,212 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:28:48,213 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:28:48,213 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:28:48,213 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:28:48,214 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:28:48,214 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:28:48,214 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:28:48,214 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:28:48,215 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:28:48,215 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:28:48,215 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:28:48,216 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:28:48,216 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:28:48,216 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:28:48,216 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:28:48,217 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:28:48,217 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:28:48,217 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:28:48,217 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:28:48,217 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:28:48,218 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:28:48,218 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:28:48,218 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:28:48,218 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:28:48,218 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:28:48,219 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:28:48,219 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:28:48,219 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; [2020-09-25 13:28:48,658 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:28:48,676 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:28:48,680 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:28:48,682 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:28:48,682 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:28:48,684 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label08.c [2020-09-25 13:28:48,761 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fc72f4e5e/c220f09911624df88d35d2aa99fa243e/FLAGb844b61ab [2020-09-25 13:28:49,391 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:28:49,395 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label08.c [2020-09-25 13:28:49,425 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fc72f4e5e/c220f09911624df88d35d2aa99fa243e/FLAGb844b61ab [2020-09-25 13:28:49,601 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fc72f4e5e/c220f09911624df88d35d2aa99fa243e [2020-09-25 13:28:49,617 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:28:49,625 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:28:49,628 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:28:49,628 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:28:49,633 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:28:49,634 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:28:49" (1/1) ... [2020-09-25 13:28:49,639 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4734e8fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:49, skipping insertion in model container [2020-09-25 13:28:49,639 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:28:49" (1/1) ... [2020-09-25 13:28:49,649 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:28:49,718 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:28:50,171 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:28:50,181 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:28:50,405 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:28:50,422 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:28:50,423 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:50 WrapperNode [2020-09-25 13:28:50,423 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:28:50,424 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:28:50,424 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:28:50,424 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:28:50,438 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:50" (1/1) ... [2020-09-25 13:28:50,438 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:50" (1/1) ... [2020-09-25 13:28:50,457 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:50" (1/1) ... [2020-09-25 13:28:50,458 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:50" (1/1) ... [2020-09-25 13:28:50,506 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:50" (1/1) ... [2020-09-25 13:28:50,530 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:50" (1/1) ... [2020-09-25 13:28:50,536 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:50" (1/1) ... [2020-09-25 13:28:50,543 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:28:50,544 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:28:50,544 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:28:50,544 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:28:50,546 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:50" (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 13:28:50,623 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:28:50,623 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:28:50,624 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 13:28:50,624 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:28:50,624 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 13:28:50,624 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:28:50,624 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:28:50,624 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 13:28:50,625 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:28:50,625 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:28:50,625 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:28:51,928 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:28:51,929 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 13:28:51,941 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:28:51 BoogieIcfgContainer [2020-09-25 13:28:51,941 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:28:51,943 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:28:51,943 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:28:51,947 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:28:51,947 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:28:49" (1/3) ... [2020-09-25 13:28:51,949 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26851755 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:28:51, skipping insertion in model container [2020-09-25 13:28:51,949 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:50" (2/3) ... [2020-09-25 13:28:51,949 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26851755 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:28:51, skipping insertion in model container [2020-09-25 13:28:51,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:28:51" (3/3) ... [2020-09-25 13:28:51,952 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label08.c [2020-09-25 13:28:51,964 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:28:51,976 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:28:52,003 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:28:52,039 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:28:52,040 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:28:52,040 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:28:52,040 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:28:52,040 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:28:52,040 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:28:52,040 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:28:52,041 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:28:52,072 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 13:28:52,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-09-25 13:28:52,093 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:28:52,094 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] [2020-09-25 13:28:52,095 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:28:52,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:28:52,103 INFO L82 PathProgramCache]: Analyzing trace with hash 461278893, now seen corresponding path program 1 times [2020-09-25 13:28:52,114 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:28:52,115 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1800467740] [2020-09-25 13:28:52,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:28:52,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:52,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:52,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:53,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:53,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:53,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:53,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:54,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:54,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:55,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:55,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:57,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:57,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:57,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-09-25 13:28:57,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 13:28:57,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-09-25 13:28:57,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:57,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:57,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:28:57,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 13:28:57,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-09-25 13:28:57,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 13:28:57,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:28:57,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:57,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:57,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:57,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 13:28:57,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:57,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 13:28:57,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:57,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:57,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:28:57,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:28:57,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 13:28:57,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:57,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:28:57,913 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1800467740] [2020-09-25 13:28:57,915 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:28:57,915 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 13:28:57,916 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237069333] [2020-09-25 13:28:57,924 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:28:57,925 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:28:57,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:28:57,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:28:57,953 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 5 states. [2020-09-25 13:29:00,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:29:00,182 INFO L93 Difference]: Finished difference Result 1259 states and 1658 transitions. [2020-09-25 13:29:00,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 13:29:00,185 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 141 [2020-09-25 13:29:00,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:29:00,214 INFO L225 Difference]: With dead ends: 1259 [2020-09-25 13:29:00,214 INFO L226 Difference]: Without dead ends: 685 [2020-09-25 13:29:00,224 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 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 13:29:00,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2020-09-25 13:29:00,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 603. [2020-09-25 13:29:00,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 13:29:00,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 725 transitions. [2020-09-25 13:29:00,326 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 725 transitions. Word has length 141 [2020-09-25 13:29:00,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:29:00,327 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 725 transitions. [2020-09-25 13:29:00,327 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:29:00,327 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 725 transitions. [2020-09-25 13:29:00,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-09-25 13:29:00,335 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:29:00,336 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 13:29:00,336 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:29:00,336 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:29:00,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:29:00,337 INFO L82 PathProgramCache]: Analyzing trace with hash 1608331772, now seen corresponding path program 1 times [2020-09-25 13:29:00,337 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:29:00,338 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [219388255] [2020-09-25 13:29:00,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:29:00,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:00,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:00,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:00,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:01,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:01,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:01,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:02,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:03,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:03,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:05,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:05,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-25 13:29:05,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 13:29:05,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 13:29:05,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:05,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:05,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:29:05,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-25 13:29:05,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-09-25 13:29:05,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:29:05,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:29:05,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:05,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:05,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:05,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 13:29:05,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:29:05,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 13:29:05,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:05,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:05,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:29:05,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:29:05,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:29:05,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:29:05,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 13:29:05,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:05,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:05,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:05,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 13:29:05,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:29:05,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-09-25 13:29:05,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:05,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:05,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:29:05,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:29:05,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:29:05,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:29:06,049 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:29:06,049 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [219388255] [2020-09-25 13:29:06,050 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:29:06,050 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 13:29:06,050 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788344189] [2020-09-25 13:29:06,053 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 13:29:06,053 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:29:06,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 13:29:06,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-09-25 13:29:06,054 INFO L87 Difference]: Start difference. First operand 603 states and 725 transitions. Second operand 9 states. [2020-09-25 13:29:10,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:29:10,196 INFO L93 Difference]: Finished difference Result 2047 states and 2738 transitions. [2020-09-25 13:29:10,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 13:29:10,197 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 162 [2020-09-25 13:29:10,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:29:10,209 INFO L225 Difference]: With dead ends: 2047 [2020-09-25 13:29:10,209 INFO L226 Difference]: Without dead ends: 1030 [2020-09-25 13:29:10,217 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2020-09-25 13:29:10,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1030 states. [2020-09-25 13:29:10,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1030 to 1003. [2020-09-25 13:29:10,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1003 states. [2020-09-25 13:29:10,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1003 states to 1003 states and 1152 transitions. [2020-09-25 13:29:10,281 INFO L78 Accepts]: Start accepts. Automaton has 1003 states and 1152 transitions. Word has length 162 [2020-09-25 13:29:10,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:29:10,282 INFO L479 AbstractCegarLoop]: Abstraction has 1003 states and 1152 transitions. [2020-09-25 13:29:10,282 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 13:29:10,282 INFO L276 IsEmpty]: Start isEmpty. Operand 1003 states and 1152 transitions. [2020-09-25 13:29:10,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-09-25 13:29:10,287 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:29:10,287 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 13:29:10,287 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:29:10,287 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:29:10,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:29:10,288 INFO L82 PathProgramCache]: Analyzing trace with hash 1956295493, now seen corresponding path program 1 times [2020-09-25 13:29:10,288 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:29:10,289 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1356924933] [2020-09-25 13:29:10,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:29:10,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:10,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:10,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:10,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:10,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:10,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:10,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:11,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:11,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:14,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:14,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:15,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:15,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:15,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-09-25 13:29:15,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 13:29:15,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-09-25 13:29:15,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:15,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:15,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:29:15,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 13:29:15,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-25 13:29:15,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:29:15,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:29:15,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:15,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:15,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:15,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 13:29:15,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:29:15,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 13:29:15,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:15,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:15,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:29:15,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:29:15,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:29:15,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:29:15,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 13:29:15,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:15,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:15,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:15,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 13:29:15,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:29:15,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 13:29:15,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:15,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:15,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:29:15,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:29:15,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:29:15,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:29:15,600 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:29:15,600 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1356924933] [2020-09-25 13:29:15,600 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:29:15,601 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 13:29:15,601 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413600281] [2020-09-25 13:29:15,602 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:29:15,602 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:29:15,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:29:15,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:29:15,607 INFO L87 Difference]: Start difference. First operand 1003 states and 1152 transitions. Second operand 5 states. [2020-09-25 13:29:17,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:29:17,577 INFO L93 Difference]: Finished difference Result 2685 states and 3155 transitions. [2020-09-25 13:29:17,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:29:17,578 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 166 [2020-09-25 13:29:17,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:29:17,589 INFO L225 Difference]: With dead ends: 2685 [2020-09-25 13:29:17,589 INFO L226 Difference]: Without dead ends: 1706 [2020-09-25 13:29:17,593 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:29:17,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1706 states. [2020-09-25 13:29:17,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1706 to 1636. [2020-09-25 13:29:17,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1636 states. [2020-09-25 13:29:17,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1636 states to 1636 states and 1898 transitions. [2020-09-25 13:29:17,662 INFO L78 Accepts]: Start accepts. Automaton has 1636 states and 1898 transitions. Word has length 166 [2020-09-25 13:29:17,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:29:17,670 INFO L479 AbstractCegarLoop]: Abstraction has 1636 states and 1898 transitions. [2020-09-25 13:29:17,670 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:29:17,670 INFO L276 IsEmpty]: Start isEmpty. Operand 1636 states and 1898 transitions. [2020-09-25 13:29:17,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-09-25 13:29:17,677 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:29:17,677 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 13:29:17,677 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:29:17,677 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:29:17,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:29:17,678 INFO L82 PathProgramCache]: Analyzing trace with hash 1385463445, now seen corresponding path program 1 times [2020-09-25 13:29:17,678 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:29:17,679 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [545277284] [2020-09-25 13:29:17,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:29:17,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:17,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:17,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:18,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:18,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:20,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:20,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:20,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:21,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:21,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:22,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:22,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:22,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-09-25 13:29:22,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 13:29:22,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 13:29:22,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:22,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:22,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:29:22,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-09-25 13:29:22,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-09-25 13:29:22,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:29:22,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:29:22,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:22,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:22,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:22,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 13:29:22,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:29:22,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 13:29:22,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:22,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:22,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:29:22,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:29:22,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:29:22,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:29:22,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 13:29:22,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:22,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:22,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:22,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 13:29:22,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:29:22,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 13:29:22,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:22,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:22,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:29:22,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:29:22,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 13:29:22,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:29:22,987 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:29:22,989 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [545277284] [2020-09-25 13:29:22,989 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:29:22,989 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 13:29:22,989 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34339309] [2020-09-25 13:29:22,990 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:29:22,990 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:29:22,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:29:22,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:29:22,991 INFO L87 Difference]: Start difference. First operand 1636 states and 1898 transitions. Second operand 5 states. [2020-09-25 13:29:24,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:29:24,628 INFO L93 Difference]: Finished difference Result 3886 states and 4660 transitions. [2020-09-25 13:29:24,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:29:24,630 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 167 [2020-09-25 13:29:24,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:29:24,642 INFO L225 Difference]: With dead ends: 3886 [2020-09-25 13:29:24,642 INFO L226 Difference]: Without dead ends: 2274 [2020-09-25 13:29:24,648 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 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 13:29:24,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2274 states. [2020-09-25 13:29:24,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2274 to 2210. [2020-09-25 13:29:24,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2210 states. [2020-09-25 13:29:24,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2210 states to 2210 states and 2634 transitions. [2020-09-25 13:29:24,722 INFO L78 Accepts]: Start accepts. Automaton has 2210 states and 2634 transitions. Word has length 167 [2020-09-25 13:29:24,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:29:24,723 INFO L479 AbstractCegarLoop]: Abstraction has 2210 states and 2634 transitions. [2020-09-25 13:29:24,723 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:29:24,723 INFO L276 IsEmpty]: Start isEmpty. Operand 2210 states and 2634 transitions. [2020-09-25 13:29:24,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-09-25 13:29:24,734 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:29:24,734 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:29:24,734 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:29:24,735 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:29:24,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:29:24,735 INFO L82 PathProgramCache]: Analyzing trace with hash -227878836, now seen corresponding path program 1 times [2020-09-25 13:29:24,735 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:29:24,736 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2117136330] [2020-09-25 13:29:24,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:29:24,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:24,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:24,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:24,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:25,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:25,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:28,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:28,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:28,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:28,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:28,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:29,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:29,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:29,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 219 [2020-09-25 13:29:29,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 13:29:29,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-25 13:29:29,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:29,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:29,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 13:29:29,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 13:29:29,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-09-25 13:29:29,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 18 [2020-09-25 13:29:30,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:29:30,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:30,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:30,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:30,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 13:29:30,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:29:30,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 13:29:30,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:30,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:30,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:29:30,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:29:30,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 13:29:30,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:29:30,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 13:29:30,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:30,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:30,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:30,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:30,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 13:29:30,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:29:30,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-25 13:29:30,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:30,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:30,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:29:30,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:29:30,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 13:29:30,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:29:30,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 13:29:30,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:30,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:30,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:30,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:30,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 13:29:30,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:29:30,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-09-25 13:29:30,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:30,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:30,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 13:29:30,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:29:30,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 13:29:30,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:29:31,188 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 45 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-25 13:29:31,190 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2117136330] [2020-09-25 13:29:31,190 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:29:31,190 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-25 13:29:31,190 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206934326] [2020-09-25 13:29:31,191 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-25 13:29:31,191 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:29:31,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-25 13:29:31,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2020-09-25 13:29:31,192 INFO L87 Difference]: Start difference. First operand 2210 states and 2634 transitions. Second operand 19 states. [2020-09-25 13:29:33,618 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 82 [2020-09-25 13:29:33,953 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 80 [2020-09-25 13:29:34,120 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2020-09-25 13:29:35,181 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 91 [2020-09-25 13:29:35,457 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78