/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --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_label52.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 05:34:23,109 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:34:23,113 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:34:23,142 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:34:23,142 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:34:23,143 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:34:23,145 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:34:23,147 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:34:23,148 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:34:23,149 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:34:23,152 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:34:23,154 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:34:23,154 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:34:23,159 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:34:23,161 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:34:23,162 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:34:23,165 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:34:23,167 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:34:23,171 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:34:23,175 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:34:23,178 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:34:23,181 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:34:23,183 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:34:23,184 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:34:23,189 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:34:23,189 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:34:23,189 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:34:23,194 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:34:23,194 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:34:23,197 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:34:23,198 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:34:23,198 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:34:23,199 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:34:23,200 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:34:23,202 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:34:23,202 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:34:23,211 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:34:23,211 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:34:23,212 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:34:23,213 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:34:23,213 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:34:23,217 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 05:34:23,267 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:34:23,268 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:34:23,270 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:34:23,270 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:34:23,271 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:34:23,271 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:34:23,271 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:34:23,272 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:34:23,272 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:34:23,272 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:34:23,273 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:34:23,273 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:34:23,273 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:34:23,274 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:34:23,274 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:34:23,274 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:34:23,274 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:34:23,275 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:34:23,275 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:34:23,275 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:34:23,275 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:34:23,276 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:34:23,276 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:34:23,276 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:34:23,276 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:34:23,276 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:34:23,276 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:34:23,277 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:34:23,277 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:34:23,277 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;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=WIDESTAMONGSMALL;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=WIDESTAMONGSMALL;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=WIDESTAMONGSMALL;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; [2020-09-25 05:34:23,779 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:34:23,807 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:34:23,813 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:34:23,815 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:34:23,816 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:34:23,817 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label52.c [2020-09-25 05:34:23,909 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/143791bda/d6157bcb800648febd86a775d60d1010/FLAGdb0125cf0 [2020-09-25 05:34:24,578 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:34:24,579 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label52.c [2020-09-25 05:34:24,595 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/143791bda/d6157bcb800648febd86a775d60d1010/FLAGdb0125cf0 [2020-09-25 05:34:24,789 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/143791bda/d6157bcb800648febd86a775d60d1010 [2020-09-25 05:34:24,804 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:34:24,810 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:34:24,812 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:34:24,812 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:34:24,816 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:34:24,818 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:34:24" (1/1) ... [2020-09-25 05:34:24,823 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@518dc62a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:24, skipping insertion in model container [2020-09-25 05:34:24,824 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:34:24" (1/1) ... [2020-09-25 05:34:24,835 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:34:24,905 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:34:25,397 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:34:25,408 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:34:25,662 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:34:25,685 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:34:25,685 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:25 WrapperNode [2020-09-25 05:34:25,686 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:34:25,687 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:34:25,687 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:34:25,687 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:34:25,705 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:25" (1/1) ... [2020-09-25 05:34:25,705 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:25" (1/1) ... [2020-09-25 05:34:25,725 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:25" (1/1) ... [2020-09-25 05:34:25,725 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:25" (1/1) ... [2020-09-25 05:34:25,765 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:25" (1/1) ... [2020-09-25 05:34:25,783 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:25" (1/1) ... [2020-09-25 05:34:25,787 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:25" (1/1) ... [2020-09-25 05:34:25,794 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:34:25,795 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:34:25,795 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:34:25,795 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:34:25,797 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:25" (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 05:34:25,900 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:34:25,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:34:25,901 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 05:34:25,901 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:34:25,901 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 05:34:25,901 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:34:25,901 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 05:34:25,902 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 05:34:25,902 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:34:25,902 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:34:25,902 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:34:27,292 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:34:27,292 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 05:34:27,308 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:34:27 BoogieIcfgContainer [2020-09-25 05:34:27,308 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:34:27,312 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:34:27,312 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:34:27,315 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:34:27,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:34:24" (1/3) ... [2020-09-25 05:34:27,317 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77282cdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:34:27, skipping insertion in model container [2020-09-25 05:34:27,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:25" (2/3) ... [2020-09-25 05:34:27,318 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77282cdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:34:27, skipping insertion in model container [2020-09-25 05:34:27,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:34:27" (3/3) ... [2020-09-25 05:34:27,320 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label52.c [2020-09-25 05:34:27,332 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:34:27,347 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 05:34:27,369 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 05:34:27,402 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:34:27,402 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:34:27,402 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:34:27,402 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:34:27,403 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:34:27,403 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:34:27,403 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:34:27,403 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:34:27,436 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 05:34:27,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-09-25 05:34:27,460 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:34:27,461 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:34:27,462 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:34:27,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:34:27,470 INFO L82 PathProgramCache]: Analyzing trace with hash 1583508727, now seen corresponding path program 1 times [2020-09-25 05:34:27,481 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:34:27,482 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [518252636] [2020-09-25 05:34:27,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:34:27,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:27,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:28,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:28,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:29,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:29,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:30,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:32,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:32,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:32,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:32,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:32,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-09-25 05:34:32,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 05:34:32,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5205 [2020-09-25 05:34:32,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:32,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:32,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:34:32,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 05:34:32,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-09-25 05:34:32,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-09-25 05:34:33,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:34:33,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:33,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:33,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:33,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:34:33,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:33,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 05:34:33,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:33,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:33,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:34:33,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:34:33,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 05:34:33,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:33,333 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 05:34:33,334 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [518252636] [2020-09-25 05:34:33,336 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:34:33,337 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 05:34:33,338 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632307358] [2020-09-25 05:34:33,345 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 05:34:33,345 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:34:33,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 05:34:33,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 05:34:33,368 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 05:34:35,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:34:35,441 INFO L93 Difference]: Finished difference Result 1268 states and 1667 transitions. [2020-09-25 05:34:35,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 05:34:35,443 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2020-09-25 05:34:35,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:34:35,467 INFO L225 Difference]: With dead ends: 1268 [2020-09-25 05:34:35,467 INFO L226 Difference]: Without dead ends: 694 [2020-09-25 05:34:35,477 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:34:35,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2020-09-25 05:34:35,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 603. [2020-09-25 05:34:35,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 05:34:35,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 719 transitions. [2020-09-25 05:34:35,583 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 719 transitions. Word has length 154 [2020-09-25 05:34:35,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:34:35,585 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 719 transitions. [2020-09-25 05:34:35,585 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 05:34:35,585 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 719 transitions. [2020-09-25 05:34:35,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-09-25 05:34:35,598 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:34:35,598 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:34:35,599 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 05:34:35,599 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:34:35,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:34:35,599 INFO L82 PathProgramCache]: Analyzing trace with hash -81177825, now seen corresponding path program 1 times [2020-09-25 05:34:35,600 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:34:35,600 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [323610131] [2020-09-25 05:34:35,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:34:35,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:35,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:35,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:36,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:37,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:37,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:38,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:40,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:40,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-09-25 05:34:40,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 05:34:40,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-09-25 05:34:40,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:40,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:40,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:34:40,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 05:34:40,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 05:34:40,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-09-25 05:34:40,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:34:40,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:40,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:40,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:40,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:34:40,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:40,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 05:34:40,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:40,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:40,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:34:40,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:34:40,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 05:34:40,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:40,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 05:34:40,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:40,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:40,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:40,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 05:34:40,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:40,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-25 05:34:40,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:40,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:40,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:34:40,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:34:40,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 05:34:40,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:40,948 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:34:40,948 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [323610131] [2020-09-25 05:34:40,949 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:34:40,949 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 05:34:40,949 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765703266] [2020-09-25 05:34:40,951 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:34:40,952 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:34:40,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:34:40,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:34:40,953 INFO L87 Difference]: Start difference. First operand 603 states and 719 transitions. Second operand 7 states. [2020-09-25 05:34:43,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:34:43,319 INFO L93 Difference]: Finished difference Result 1555 states and 1945 transitions. [2020-09-25 05:34:43,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 05:34:43,326 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 175 [2020-09-25 05:34:43,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:34:43,340 INFO L225 Difference]: With dead ends: 1555 [2020-09-25 05:34:43,340 INFO L226 Difference]: Without dead ends: 976 [2020-09-25 05:34:43,344 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-25 05:34:43,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 976 states. [2020-09-25 05:34:43,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 976 to 908. [2020-09-25 05:34:43,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 908 states. [2020-09-25 05:34:43,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 908 states to 908 states and 1107 transitions. [2020-09-25 05:34:43,421 INFO L78 Accepts]: Start accepts. Automaton has 908 states and 1107 transitions. Word has length 175 [2020-09-25 05:34:43,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:34:43,422 INFO L479 AbstractCegarLoop]: Abstraction has 908 states and 1107 transitions. [2020-09-25 05:34:43,422 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 05:34:43,422 INFO L276 IsEmpty]: Start isEmpty. Operand 908 states and 1107 transitions. [2020-09-25 05:34:43,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-09-25 05:34:43,428 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:34:43,428 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:34:43,429 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 05:34:43,429 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:34:43,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:34:43,430 INFO L82 PathProgramCache]: Analyzing trace with hash -1469093243, now seen corresponding path program 1 times [2020-09-25 05:34:43,430 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:34:43,430 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1996984182] [2020-09-25 05:34:43,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:34:43,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:43,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:43,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:44,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:44,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:44,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:46,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:46,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:47,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:48,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:48,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-09-25 05:34:48,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 05:34:48,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 05:34:48,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:48,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:48,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:34:48,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 05:34:48,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 05:34:48,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:48,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:34:48,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:48,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:48,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:48,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:34:48,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:48,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 05:34:48,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:48,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:48,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:34:48,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:34:48,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 05:34:48,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:48,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 05:34:48,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:48,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:48,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:48,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:34:48,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:48,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 05:34:48,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:48,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:48,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:34:48,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:34:48,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 05:34:48,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:48,717 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:34:48,717 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1996984182] [2020-09-25 05:34:48,718 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:34:48,718 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 05:34:48,718 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150954962] [2020-09-25 05:34:48,719 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:34:48,719 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:34:48,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:34:48,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:34:48,720 INFO L87 Difference]: Start difference. First operand 908 states and 1107 transitions. Second operand 7 states. [2020-09-25 05:34:51,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:34:51,135 INFO L93 Difference]: Finished difference Result 2575 states and 3288 transitions. [2020-09-25 05:34:51,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 05:34:51,135 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 176 [2020-09-25 05:34:51,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:34:51,147 INFO L225 Difference]: With dead ends: 2575 [2020-09-25 05:34:51,147 INFO L226 Difference]: Without dead ends: 1691 [2020-09-25 05:34:51,152 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 05:34:51,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1691 states. [2020-09-25 05:34:51,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1691 to 1568. [2020-09-25 05:34:51,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1568 states. [2020-09-25 05:34:51,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 1937 transitions. [2020-09-25 05:34:51,213 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 1937 transitions. Word has length 176 [2020-09-25 05:34:51,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:34:51,213 INFO L479 AbstractCegarLoop]: Abstraction has 1568 states and 1937 transitions. [2020-09-25 05:34:51,213 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 05:34:51,213 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 1937 transitions. [2020-09-25 05:34:51,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-09-25 05:34:51,222 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:34:51,222 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:34:51,222 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 05:34:51,223 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:34:51,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:34:51,223 INFO L82 PathProgramCache]: Analyzing trace with hash -231794110, now seen corresponding path program 1 times [2020-09-25 05:34:51,223 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:34:51,224 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [266457403] [2020-09-25 05:34:51,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:34:51,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:51,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:51,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:51,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:52,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:52,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:53,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:55,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:56,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:56,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-09-25 05:34:56,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 05:34:56,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-25 05:34:56,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:56,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:56,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 05:34:56,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 05:34:56,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-09-25 05:34:56,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:56,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:34:56,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:56,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:56,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:56,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:34:56,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:56,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 05:34:56,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:56,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:56,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:34:56,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:34:56,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 05:34:56,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:56,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 05:34:56,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:56,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:56,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:56,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:56,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:34:56,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:34:56,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-09-25 05:34:56,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:56,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:56,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:34:56,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:34:56,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 05:34:56,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:56,648 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 05:34:56,648 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [266457403] [2020-09-25 05:34:56,649 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:34:56,649 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:34:56,649 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127705836] [2020-09-25 05:34:56,650 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:34:56,650 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:34:56,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:34:56,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:34:56,651 INFO L87 Difference]: Start difference. First operand 1568 states and 1937 transitions. Second operand 5 states. [2020-09-25 05:34:58,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:34:58,587 INFO L93 Difference]: Finished difference Result 4142 states and 5289 transitions. [2020-09-25 05:34:58,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:34:58,588 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 183 [2020-09-25 05:34:58,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:34:58,613 INFO L225 Difference]: With dead ends: 4142 [2020-09-25 05:34:58,613 INFO L226 Difference]: Without dead ends: 2598 [2020-09-25 05:34:58,620 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 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 05:34:58,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2598 states. [2020-09-25 05:34:58,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2598 to 2422. [2020-09-25 05:34:58,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2422 states. [2020-09-25 05:34:58,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2422 states to 2422 states and 3062 transitions. [2020-09-25 05:34:58,729 INFO L78 Accepts]: Start accepts. Automaton has 2422 states and 3062 transitions. Word has length 183 [2020-09-25 05:34:58,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:34:58,730 INFO L479 AbstractCegarLoop]: Abstraction has 2422 states and 3062 transitions. [2020-09-25 05:34:58,731 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:34:58,731 INFO L276 IsEmpty]: Start isEmpty. Operand 2422 states and 3062 transitions. [2020-09-25 05:34:58,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-09-25 05:34:58,745 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:34:58,745 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:34:58,745 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 05:34:58,746 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:34:58,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:34:58,746 INFO L82 PathProgramCache]: Analyzing trace with hash -422908273, now seen corresponding path program 1 times [2020-09-25 05:34:58,746 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:34:58,747 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1171097965] [2020-09-25 05:34:58,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:34:58,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:58,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:58,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:59,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:59,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:59,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:59,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:59,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:00,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:00,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:00,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:01,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:01,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:01,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:01,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:01,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:03,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:03,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-09-25 05:35:03,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-09-25 05:35:03,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 05:35:03,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:03,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:03,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:35:03,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 05:35:03,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 05:35:03,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:35:03,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:35:03,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:03,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:03,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:03,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:35:03,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:35:03,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 05:35:03,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:03,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:03,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:35:03,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:35:03,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:35:03,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:35:03,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 05:35:03,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:03,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:03,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:03,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 05:35:03,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:35:03,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 05:35:03,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:03,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:03,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:35:03,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:35:03,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 05:35:03,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:35:04,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 05:35:04,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:04,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:04,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:04,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 05:35:04,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:35:04,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-09-25 05:35:04,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:04,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:04,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:35:04,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:35:04,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 05:35:04,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:35:04,163 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 44 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 05:35:04,164 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1171097965] [2020-09-25 05:35:04,164 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:35:04,164 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 05:35:04,165 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843656982] [2020-09-25 05:35:04,165 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:35:04,165 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:35:04,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:35:04,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:35:04,166 INFO L87 Difference]: Start difference. First operand 2422 states and 3062 transitions. Second operand 7 states. [2020-09-25 05:35:07,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:35:07,758 INFO L93 Difference]: Finished difference Result 6620 states and 8995 transitions. [2020-09-25 05:35:07,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 05:35:07,759 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 205 [2020-09-25 05:35:07,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:35:07,790 INFO L225 Difference]: With dead ends: 6620 [2020-09-25 05:35:07,790 INFO L226 Difference]: Without dead ends: 4222 [2020-09-25 05:35:07,803 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 05:35:07,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4222 states. [2020-09-25 05:35:07,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4222 to 3680. [2020-09-25 05:35:07,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3680 states. [2020-09-25 05:35:07,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3680 states to 3680 states and 4593 transitions. [2020-09-25 05:35:07,952 INFO L78 Accepts]: Start accepts. Automaton has 3680 states and 4593 transitions. Word has length 205 [2020-09-25 05:35:07,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:35:07,952 INFO L479 AbstractCegarLoop]: Abstraction has 3680 states and 4593 transitions. [2020-09-25 05:35:07,953 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 05:35:07,953 INFO L276 IsEmpty]: Start isEmpty. Operand 3680 states and 4593 transitions. [2020-09-25 05:35:07,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-09-25 05:35:07,968 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:35:07,969 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:35:07,969 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 05:35:07,969 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:35:07,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:35:07,970 INFO L82 PathProgramCache]: Analyzing trace with hash -102390325, now seen corresponding path program 1 times [2020-09-25 05:35:07,970 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:35:07,970 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1521155639] [2020-09-25 05:35:07,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:35:08,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:08,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:08,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:08,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:08,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:08,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:09,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:09,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:09,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:10,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:11,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:11,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:11,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking...