/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=0.5 --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_label26.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:36:49,075 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:36:49,079 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:36:49,105 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:36:49,106 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:36:49,107 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:36:49,109 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:36:49,111 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:36:49,113 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:36:49,114 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:36:49,115 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:36:49,117 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:36:49,117 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:36:49,118 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:36:49,120 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:36:49,121 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:36:49,122 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:36:49,123 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:36:49,125 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:36:49,127 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:36:49,129 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:36:49,131 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:36:49,132 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:36:49,133 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:36:49,136 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:36:49,136 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:36:49,136 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:36:49,137 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:36:49,138 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:36:49,139 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:36:49,139 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:36:49,140 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:36:49,141 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:36:49,142 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:36:49,143 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:36:49,144 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:36:49,145 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:36:49,145 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:36:49,145 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:36:49,146 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:36:49,147 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:36:49,148 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 14:36:49,175 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:36:49,175 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:36:49,177 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:36:49,177 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:36:49,177 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:36:49,178 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:36:49,178 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:36:49,178 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:36:49,178 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:36:49,178 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:36:49,179 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:36:49,179 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:36:49,179 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:36:49,179 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:36:49,180 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:36:49,180 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:36:49,180 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:36:49,180 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:36:49,180 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:36:49,181 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:36:49,181 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:36:49,181 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:36:49,181 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:36:49,182 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:36:49,182 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:36:49,182 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:36:49,182 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:36:49,183 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:36:49,183 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:36:49,183 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=0.5;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=0.5;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=0.5;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=0.5;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=0.5;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=0.5;log-additional-information=true; [2020-09-25 14:36:49,667 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:36:49,689 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:36:49,697 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:36:49,699 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:36:49,700 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:36:49,702 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label26.c [2020-09-25 14:36:49,799 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/473474682/d861c8e5f6a94893a5de7814d916ce87/FLAG5a3c60835 [2020-09-25 14:36:50,475 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:36:50,476 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label26.c [2020-09-25 14:36:50,490 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/473474682/d861c8e5f6a94893a5de7814d916ce87/FLAG5a3c60835 [2020-09-25 14:36:50,685 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/473474682/d861c8e5f6a94893a5de7814d916ce87 [2020-09-25 14:36:50,701 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:36:50,708 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:36:50,712 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:36:50,712 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:36:50,717 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:36:50,718 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:36:50" (1/1) ... [2020-09-25 14:36:50,723 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c2caf49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:50, skipping insertion in model container [2020-09-25 14:36:50,723 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:36:50" (1/1) ... [2020-09-25 14:36:50,734 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:36:50,815 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:36:51,324 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:36:51,331 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:36:51,531 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:36:51,558 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:36:51,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:51 WrapperNode [2020-09-25 14:36:51,559 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:36:51,560 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:36:51,560 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:36:51,560 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:36:51,574 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:51" (1/1) ... [2020-09-25 14:36:51,575 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:51" (1/1) ... [2020-09-25 14:36:51,595 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:51" (1/1) ... [2020-09-25 14:36:51,595 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:51" (1/1) ... [2020-09-25 14:36:51,643 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:51" (1/1) ... [2020-09-25 14:36:51,661 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:51" (1/1) ... [2020-09-25 14:36:51,666 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:51" (1/1) ... [2020-09-25 14:36:51,674 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:36:51,674 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:36:51,674 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:36:51,675 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:36:51,676 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:51" (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 14:36:51,760 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:36:51,760 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:36:51,760 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 14:36:51,761 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:36:51,761 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 14:36:51,761 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:36:51,762 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 14:36:51,762 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 14:36:51,762 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:36:51,762 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:36:51,763 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:36:53,235 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:36:53,236 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 14:36:53,255 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:36:53 BoogieIcfgContainer [2020-09-25 14:36:53,255 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:36:53,257 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:36:53,258 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:36:53,261 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:36:53,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:36:50" (1/3) ... [2020-09-25 14:36:53,263 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@199be726 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:36:53, skipping insertion in model container [2020-09-25 14:36:53,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:51" (2/3) ... [2020-09-25 14:36:53,264 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@199be726 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:36:53, skipping insertion in model container [2020-09-25 14:36:53,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:36:53" (3/3) ... [2020-09-25 14:36:53,268 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label26.c [2020-09-25 14:36:53,279 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:36:53,299 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:36:53,324 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:36:53,360 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:36:53,360 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:36:53,362 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:36:53,362 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:36:53,363 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:36:53,364 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:36:53,364 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:36:53,364 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:36:53,399 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 14:36:53,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-09-25 14:36:53,421 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:36:53,422 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] [2020-09-25 14:36:53,423 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:36:53,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:36:53,429 INFO L82 PathProgramCache]: Analyzing trace with hash -1760559547, now seen corresponding path program 1 times [2020-09-25 14:36:53,439 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:36:53,439 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [227973489] [2020-09-25 14:36:53,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:36:53,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:53,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:54,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:54,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:54,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:55,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:56,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:57,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:58,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:58,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-09-25 14:36:58,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 14:36:58,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 14:36:58,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:58,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:58,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:36:58,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 14:36:58,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-09-25 14:36:58,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 14:36:58,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:36:59,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:59,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:59,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:59,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:36:59,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:36:59,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 14:36:59,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:59,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:59,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:36:59,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:36:59,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 14:36:59,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:59,133 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 14:36:59,134 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [227973489] [2020-09-25 14:36:59,136 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:36:59,137 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 14:36:59,138 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484193217] [2020-09-25 14:36:59,145 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:36:59,146 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:36:59,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:36:59,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:36:59,169 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 5 states. [2020-09-25 14:37:01,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:37:01,567 INFO L93 Difference]: Finished difference Result 1259 states and 1658 transitions. [2020-09-25 14:37:01,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 14:37:01,569 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 131 [2020-09-25 14:37:01,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:37:01,594 INFO L225 Difference]: With dead ends: 1259 [2020-09-25 14:37:01,595 INFO L226 Difference]: Without dead ends: 685 [2020-09-25 14:37:01,608 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 14:37:01,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2020-09-25 14:37:01,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 603. [2020-09-25 14:37:01,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 14:37:01,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 725 transitions. [2020-09-25 14:37:01,711 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 725 transitions. Word has length 131 [2020-09-25 14:37:01,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:37:01,712 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 725 transitions. [2020-09-25 14:37:01,713 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:37:01,713 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 725 transitions. [2020-09-25 14:37:01,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-09-25 14:37:01,721 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:37:01,721 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] [2020-09-25 14:37:01,721 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:37:01,722 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:37:01,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:37:01,722 INFO L82 PathProgramCache]: Analyzing trace with hash 139765844, now seen corresponding path program 1 times [2020-09-25 14:37:01,722 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:37:01,723 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1963517787] [2020-09-25 14:37:01,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:37:01,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:01,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:01,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:02,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:02,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:02,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:04,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:04,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:05,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:06,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:06,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-09-25 14:37:06,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 14:37:06,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 14:37:06,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:06,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:06,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:37:06,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-25 14:37:06,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-09-25 14:37:06,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:06,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:37:06,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:06,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:06,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:06,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:37:06,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:37:06,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 14:37:06,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:06,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:06,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:37:06,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:37:06,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:37:06,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-09-25 14:37:07,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 14:37:07,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:07,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:07,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:07,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 14:37:07,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:37:07,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 14:37:07,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:07,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:07,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:37:07,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:37:07,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 14:37:07,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:07,099 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 14:37:07,099 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1963517787] [2020-09-25 14:37:07,100 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:37:07,100 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 14:37:07,101 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673344913] [2020-09-25 14:37:07,104 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:37:07,104 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:37:07,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:37:07,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:37:07,105 INFO L87 Difference]: Start difference. First operand 603 states and 725 transitions. Second operand 5 states. [2020-09-25 14:37:09,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:37:09,221 INFO L93 Difference]: Finished difference Result 1559 states and 1949 transitions. [2020-09-25 14:37:09,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:37:09,221 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2020-09-25 14:37:09,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:37:09,233 INFO L225 Difference]: With dead ends: 1559 [2020-09-25 14:37:09,233 INFO L226 Difference]: Without dead ends: 980 [2020-09-25 14:37:09,236 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 14:37:09,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 980 states. [2020-09-25 14:37:09,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 980 to 889. [2020-09-25 14:37:09,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 889 states. [2020-09-25 14:37:09,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 889 states to 889 states and 1118 transitions. [2020-09-25 14:37:09,289 INFO L78 Accepts]: Start accepts. Automaton has 889 states and 1118 transitions. Word has length 152 [2020-09-25 14:37:09,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:37:09,290 INFO L479 AbstractCegarLoop]: Abstraction has 889 states and 1118 transitions. [2020-09-25 14:37:09,290 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:37:09,291 INFO L276 IsEmpty]: Start isEmpty. Operand 889 states and 1118 transitions. [2020-09-25 14:37:09,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-09-25 14:37:09,296 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:37:09,297 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:37:09,297 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:37:09,298 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:37:09,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:37:09,298 INFO L82 PathProgramCache]: Analyzing trace with hash 1952467868, now seen corresponding path program 1 times [2020-09-25 14:37:09,298 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:37:09,299 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [37793602] [2020-09-25 14:37:09,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:37:09,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:09,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:09,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:09,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:09,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:09,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:09,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:10,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:10,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:12,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:14,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:14,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-09-25 14:37:14,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 14:37:14,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 14:37:14,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:14,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:14,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:37:14,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-09-25 14:37:14,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-09-25 14:37:14,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:14,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:37:14,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:14,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:14,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:14,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:37:14,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:37:14,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 14:37:14,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:14,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:14,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:37:14,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:37:14,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:37:14,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:14,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 14:37:14,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:14,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:14,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:14,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 14:37:14,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:37:14,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-25 14:37:14,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:14,577 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:14,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:37:14,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:37:14,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 14:37:14,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:37:14,755 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:37:14,756 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [37793602] [2020-09-25 14:37:14,756 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:37:14,756 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 14:37:14,757 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722607546] [2020-09-25 14:37:14,758 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 14:37:14,758 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:37:14,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 14:37:14,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:37:14,759 INFO L87 Difference]: Start difference. First operand 889 states and 1118 transitions. Second operand 6 states. [2020-09-25 14:37:17,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:37:17,707 INFO L93 Difference]: Finished difference Result 3052 states and 4089 transitions. [2020-09-25 14:37:17,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 14:37:17,708 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 161 [2020-09-25 14:37:17,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:37:17,739 INFO L225 Difference]: With dead ends: 3052 [2020-09-25 14:37:17,740 INFO L226 Difference]: Without dead ends: 2187 [2020-09-25 14:37:17,746 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 14:37:17,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2187 states. [2020-09-25 14:37:17,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2187 to 1949. [2020-09-25 14:37:17,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1949 states. [2020-09-25 14:37:17,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1949 states to 1949 states and 2490 transitions. [2020-09-25 14:37:17,870 INFO L78 Accepts]: Start accepts. Automaton has 1949 states and 2490 transitions. Word has length 161 [2020-09-25 14:37:17,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:37:17,871 INFO L479 AbstractCegarLoop]: Abstraction has 1949 states and 2490 transitions. [2020-09-25 14:37:17,871 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 14:37:17,871 INFO L276 IsEmpty]: Start isEmpty. Operand 1949 states and 2490 transitions. [2020-09-25 14:37:17,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-09-25 14:37:17,889 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:37:17,890 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:37:17,891 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:37:17,891 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:37:17,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:37:17,892 INFO L82 PathProgramCache]: Analyzing trace with hash -1399138779, now seen corresponding path program 1 times [2020-09-25 14:37:17,892 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:37:17,894 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [438225843] [2020-09-25 14:37:17,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:37:17,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:17,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:18,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:18,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:18,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:18,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:20,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:21,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:21,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:22,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:22,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-09-25 14:37:22,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 14:37:22,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 14:37:22,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:22,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:22,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 14:37:22,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-09-25 14:37:22,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-09-25 14:37:22,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:23,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:37:23,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:23,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:23,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:23,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:37:23,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:37:23,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 14:37:23,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:23,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:23,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:37:23,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:37:23,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:37:23,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:23,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 14:37:23,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:23,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:23,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:23,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 14:37:23,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:37:23,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 14:37:23,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:23,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:23,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:37:23,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:37:23,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:37:23,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:23,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 14:37:23,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:23,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:23,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:23,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 14:37:23,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:37:23,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-09-25 14:37:23,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:23,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:23,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:37:23,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:37:23,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 14:37:23,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:23,629 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 40 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 14:37:23,629 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [438225843] [2020-09-25 14:37:23,630 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:37:23,630 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 14:37:23,630 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542883416] [2020-09-25 14:37:23,631 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 14:37:23,631 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:37:23,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 14:37:23,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-09-25 14:37:23,631 INFO L87 Difference]: Start difference. First operand 1949 states and 2490 transitions. Second operand 10 states. [2020-09-25 14:37:27,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:37:27,602 INFO L93 Difference]: Finished difference Result 4424 states and 5801 transitions. [2020-09-25 14:37:27,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 14:37:27,603 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 189 [2020-09-25 14:37:27,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:37:27,619 INFO L225 Difference]: With dead ends: 4424 [2020-09-25 14:37:27,619 INFO L226 Difference]: Without dead ends: 2263 [2020-09-25 14:37:27,628 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=68, Invalid=114, Unknown=0, NotChecked=0, Total=182 [2020-09-25 14:37:27,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2263 states. [2020-09-25 14:37:27,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2263 to 2102. [2020-09-25 14:37:27,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2102 states. [2020-09-25 14:37:27,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2102 states to 2102 states and 2618 transitions. [2020-09-25 14:37:27,711 INFO L78 Accepts]: Start accepts. Automaton has 2102 states and 2618 transitions. Word has length 189 [2020-09-25 14:37:27,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:37:27,712 INFO L479 AbstractCegarLoop]: Abstraction has 2102 states and 2618 transitions. [2020-09-25 14:37:27,712 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 14:37:27,712 INFO L276 IsEmpty]: Start isEmpty. Operand 2102 states and 2618 transitions. [2020-09-25 14:37:27,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-09-25 14:37:27,722 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:37:27,722 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:37:27,722 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 14:37:27,722 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:37:27,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:37:27,723 INFO L82 PathProgramCache]: Analyzing trace with hash -1472131304, now seen corresponding path program 1 times [2020-09-25 14:37:27,723 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:37:27,723 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1735133123] [2020-09-25 14:37:27,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:37:27,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:27,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:27,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:27,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:28,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:30,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:30,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:32,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:32,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:32,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 203 [2020-09-25 14:37:32,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 14:37:32,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5059 [2020-09-25 14:37:32,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:32,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:32,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:37:32,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-25 14:37:32,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 14:37:32,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:32,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:37:32,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:32,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:32,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:32,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:37:32,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:37:32,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 14:37:32,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:32,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:32,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:37:32,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:37:32,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:37:32,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:32,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 14:37:32,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:32,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:32,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:32,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 14:37:32,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:37:32,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 14:37:32,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:32,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:32,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:37:32,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:37:32,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 14:37:32,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:37:32,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 14:37:32,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:32,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:33,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:33,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 14:37:33,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:37:33,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-09-25 14:37:33,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:33,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:33,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:37:33,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:37:33,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 14:37:33,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:37:33,134 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 54 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 14:37:33,135 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1735133123] [2020-09-25 14:37:33,136 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:37:33,136 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 14:37:33,136 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717786500] [2020-09-25 14:37:33,137 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:37:33,137 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:37:33,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:37:33,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:37:33,138 INFO L87 Difference]: Start difference. First operand 2102 states and 2618 transitions. Second operand 7 states. [2020-09-25 14:37:35,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:37:35,209 INFO L93 Difference]: Finished difference Result 4660 states and 5849 transitions. [2020-09-25 14:37:35,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 14:37:35,211 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 190 [2020-09-25 14:37:35,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:37:35,227 INFO L225 Difference]: With dead ends: 4660 [2020-09-25 14:37:35,227 INFO L226 Difference]: Without dead ends: 2582 [2020-09-25 14:37:35,235 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 14:37:35,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2582 states. [2020-09-25 14:37:35,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2582 to 2398. [2020-09-25 14:37:35,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2398 states. [2020-09-25 14:37:35,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2398 states to 2398 states and 2927 transitions. [2020-09-25 14:37:35,313 INFO L78 Accepts]: Start accepts. Automaton has 2398 states and 2927 transitions. Word has length 190 [2020-09-25 14:37:35,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:37:35,314 INFO L479 AbstractCegarLoop]: Abstraction has 2398 states and 2927 transitions. [2020-09-25 14:37:35,314 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:37:35,314 INFO L276 IsEmpty]: Start isEmpty. Operand 2398 states and 2927 transitions. [2020-09-25 14:37:35,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-09-25 14:37:35,325 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:37:35,326 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, 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] [2020-09-25 14:37:35,326 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 14:37:35,326 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:37:35,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:37:35,327 INFO L82 PathProgramCache]: Analyzing trace with hash -182418823, now seen corresponding path program 1 times [2020-09-25 14:37:35,327 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:37:35,327 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [483934909] [2020-09-25 14:37:35,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:37:35,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:35,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:35,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:35,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:35,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:35,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:35,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:35,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:36,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:36,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:36,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:38,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking...