/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=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label10.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 04:24:46,966 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 04:24:46,970 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 04:24:47,018 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 04:24:47,018 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 04:24:47,026 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 04:24:47,028 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 04:24:47,031 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 04:24:47,034 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 04:24:47,036 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 04:24:47,037 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 04:24:47,042 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 04:24:47,042 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 04:24:47,043 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 04:24:47,044 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 04:24:47,045 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 04:24:47,047 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 04:24:47,048 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 04:24:47,050 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 04:24:47,058 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 04:24:47,061 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 04:24:47,062 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 04:24:47,064 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 04:24:47,064 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 04:24:47,076 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 04:24:47,082 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 04:24:47,082 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 04:24:47,083 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 04:24:47,084 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 04:24:47,087 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 04:24:47,087 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 04:24:47,088 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 04:24:47,092 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 04:24:47,093 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 04:24:47,095 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 04:24:47,095 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 04:24:47,097 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 04:24:47,097 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 04:24:47,097 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 04:24:47,098 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 04:24:47,100 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 04:24:47,101 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 04:24:47,144 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 04:24:47,144 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 04:24:47,146 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 04:24:47,146 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 04:24:47,147 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 04:24:47,147 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 04:24:47,147 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 04:24:47,148 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 04:24:47,148 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 04:24:47,148 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 04:24:47,149 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 04:24:47,149 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 04:24:47,149 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 04:24:47,150 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 04:24:47,150 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 04:24:47,150 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 04:24:47,150 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 04:24:47,151 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 04:24:47,151 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 04:24:47,151 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 04:24:47,151 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 04:24:47,151 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:24:47,152 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 04:24:47,152 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 04:24:47,152 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 04:24:47,152 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 04:24:47,152 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 04:24:47,153 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 04:24:47,153 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 04:24:47,153 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=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; [2020-09-25 04:24:47,601 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 04:24:47,618 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 04:24:47,624 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 04:24:47,626 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 04:24:47,628 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 04:24:47,629 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label10.c [2020-09-25 04:24:47,726 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/644bd708a/36150c3febd74f7ea6ed58d8a9f5394e/FLAGa373ecd2d [2020-09-25 04:24:48,405 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 04:24:48,406 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label10.c [2020-09-25 04:24:48,429 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/644bd708a/36150c3febd74f7ea6ed58d8a9f5394e/FLAGa373ecd2d [2020-09-25 04:24:48,639 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/644bd708a/36150c3febd74f7ea6ed58d8a9f5394e [2020-09-25 04:24:48,655 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 04:24:48,662 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 04:24:48,663 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 04:24:48,663 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 04:24:48,668 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 04:24:48,669 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:24:48" (1/1) ... [2020-09-25 04:24:48,674 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@182b6a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:24:48, skipping insertion in model container [2020-09-25 04:24:48,674 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:24:48" (1/1) ... [2020-09-25 04:24:48,684 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 04:24:48,739 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 04:24:49,240 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:24:49,248 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 04:24:49,471 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:24:49,494 INFO L208 MainTranslator]: Completed translation [2020-09-25 04:24:49,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:24:49 WrapperNode [2020-09-25 04:24:49,496 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 04:24:49,497 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 04:24:49,497 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 04:24:49,498 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 04:24:49,518 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:24:49" (1/1) ... [2020-09-25 04:24:49,519 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:24:49" (1/1) ... [2020-09-25 04:24:49,546 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:24:49" (1/1) ... [2020-09-25 04:24:49,546 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:24:49" (1/1) ... [2020-09-25 04:24:49,588 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:24:49" (1/1) ... [2020-09-25 04:24:49,605 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:24:49" (1/1) ... [2020-09-25 04:24:49,611 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:24:49" (1/1) ... [2020-09-25 04:24:49,618 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 04:24:49,619 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 04:24:49,619 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 04:24:49,619 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 04:24:49,621 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:24:49" (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 04:24:49,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 04:24:49,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 04:24:49,724 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 04:24:49,724 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 04:24:49,724 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 04:24:49,725 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 04:24:49,725 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 04:24:49,726 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 04:24:49,726 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 04:24:49,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 04:24:49,727 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 04:24:51,126 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 04:24:51,129 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 04:24:51,145 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:24:51 BoogieIcfgContainer [2020-09-25 04:24:51,145 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 04:24:51,149 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 04:24:51,150 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 04:24:51,154 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 04:24:51,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:24:48" (1/3) ... [2020-09-25 04:24:51,158 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a73325b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:24:51, skipping insertion in model container [2020-09-25 04:24:51,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:24:49" (2/3) ... [2020-09-25 04:24:51,163 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a73325b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:24:51, skipping insertion in model container [2020-09-25 04:24:51,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:24:51" (3/3) ... [2020-09-25 04:24:51,173 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label10.c [2020-09-25 04:24:51,193 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 04:24:51,210 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 04:24:51,234 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 04:24:51,276 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 04:24:51,276 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 04:24:51,277 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 04:24:51,277 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 04:24:51,277 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 04:24:51,277 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 04:24:51,277 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 04:24:51,277 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 04:24:51,311 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 04:24:51,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-09-25 04:24:51,346 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:24:51,347 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] [2020-09-25 04:24:51,348 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:24:51,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:24:51,357 INFO L82 PathProgramCache]: Analyzing trace with hash 346455735, now seen corresponding path program 1 times [2020-09-25 04:24:51,367 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:24:51,367 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1211459867] [2020-09-25 04:24:51,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:24:51,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:51,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:52,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:52,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:53,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:55,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:56,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:56,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-09-25 04:24:56,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 04:24:56,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 04:24:56,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:56,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:56,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:24:56,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 04:24:56,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-09-25 04:24:56,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 04:24:56,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:24:56,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:56,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:57,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:57,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:24:57,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:57,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-25 04:24:57,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:57,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:57,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:24:57,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:24:57,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 04:24:57,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:24:57,098 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 04:24:57,099 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1211459867] [2020-09-25 04:24:57,102 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:24:57,102 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 04:24:57,103 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480078953] [2020-09-25 04:24:57,112 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 04:24:57,112 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:24:57,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 04:24:57,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 04:24:57,136 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 04:24:59,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:24:59,339 INFO L93 Difference]: Finished difference Result 1212 states and 1611 transitions. [2020-09-25 04:24:59,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 04:24:59,345 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 138 [2020-09-25 04:24:59,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:24:59,387 INFO L225 Difference]: With dead ends: 1212 [2020-09-25 04:24:59,388 INFO L226 Difference]: Without dead ends: 638 [2020-09-25 04:24:59,402 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:24:59,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2020-09-25 04:24:59,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 603. [2020-09-25 04:24:59,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 04:24:59,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 719 transitions. [2020-09-25 04:24:59,531 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 719 transitions. Word has length 138 [2020-09-25 04:24:59,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:24:59,533 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 719 transitions. [2020-09-25 04:24:59,533 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 04:24:59,533 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 719 transitions. [2020-09-25 04:24:59,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-09-25 04:24:59,542 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:24:59,543 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:24:59,543 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 04:24:59,543 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:24:59,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:24:59,544 INFO L82 PathProgramCache]: Analyzing trace with hash 216020424, now seen corresponding path program 1 times [2020-09-25 04:24:59,544 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:24:59,544 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1836861594] [2020-09-25 04:24:59,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:24:59,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:59,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:59,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:00,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:00,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:00,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:00,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:02,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:02,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:02,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:04,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:04,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:04,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:04,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:04,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-09-25 04:25:04,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 04:25:04,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5056 [2020-09-25 04:25:04,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:04,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:04,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:25:04,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-25 04:25:04,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-09-25 04:25:04,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:04,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:25:04,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:04,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:04,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:04,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:25:04,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:04,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 04:25:04,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:04,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:04,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:25:04,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:25:04,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:25:04,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-09-25 04:25:04,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 04:25:04,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:04,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:04,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:04,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 04:25:04,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:04,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 04:25:04,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:04,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:04,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:25:04,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:25:04,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 04:25:04,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:04,936 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 04:25:04,936 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1836861594] [2020-09-25 04:25:04,937 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:25:04,937 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:25:04,937 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691635351] [2020-09-25 04:25:04,941 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:25:04,941 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:25:04,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:25:04,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:25:04,942 INFO L87 Difference]: Start difference. First operand 603 states and 719 transitions. Second operand 5 states. [2020-09-25 04:25:07,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:25:07,127 INFO L93 Difference]: Finished difference Result 1559 states and 1931 transitions. [2020-09-25 04:25:07,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:25:07,128 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 159 [2020-09-25 04:25:07,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:25:07,139 INFO L225 Difference]: With dead ends: 1559 [2020-09-25 04:25:07,139 INFO L226 Difference]: Without dead ends: 980 [2020-09-25 04:25:07,142 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:25:07,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 980 states. [2020-09-25 04:25:07,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 980 to 889. [2020-09-25 04:25:07,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 889 states. [2020-09-25 04:25:07,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 889 states to 889 states and 1094 transitions. [2020-09-25 04:25:07,186 INFO L78 Accepts]: Start accepts. Automaton has 889 states and 1094 transitions. Word has length 159 [2020-09-25 04:25:07,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:25:07,187 INFO L479 AbstractCegarLoop]: Abstraction has 889 states and 1094 transitions. [2020-09-25 04:25:07,187 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:25:07,187 INFO L276 IsEmpty]: Start isEmpty. Operand 889 states and 1094 transitions. [2020-09-25 04:25:07,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-09-25 04:25:07,193 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:25:07,193 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:25:07,193 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 04:25:07,194 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:25:07,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:25:07,194 INFO L82 PathProgramCache]: Analyzing trace with hash -1520709248, now seen corresponding path program 1 times [2020-09-25 04:25:07,194 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:25:07,195 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1812762434] [2020-09-25 04:25:07,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:25:07,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:07,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:07,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:07,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:07,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:07,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:07,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:08,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:08,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:11,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:11,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:11,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:12,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:12,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-09-25 04:25:12,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 04:25:12,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 04:25:12,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:12,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:12,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:25:12,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-09-25 04:25:12,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-09-25 04:25:12,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:12,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:25:12,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:12,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:12,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:12,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:25:12,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:12,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 04:25:12,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:12,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:12,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:25:12,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:25:12,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:25:12,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:12,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 04:25:12,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:12,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:12,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:12,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 04:25:12,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:12,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 04:25:12,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:12,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:12,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:25:12,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:25:12,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 04:25:12,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:12,556 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 04:25:12,557 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1812762434] [2020-09-25 04:25:12,557 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:25:12,557 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:25:12,557 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23753038] [2020-09-25 04:25:12,559 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:25:12,559 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:25:12,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:25:12,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:25:12,565 INFO L87 Difference]: Start difference. First operand 889 states and 1094 transitions. Second operand 5 states. [2020-09-25 04:25:14,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:25:14,543 INFO L93 Difference]: Finished difference Result 2462 states and 3119 transitions. [2020-09-25 04:25:14,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:25:14,544 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 168 [2020-09-25 04:25:14,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:25:14,555 INFO L225 Difference]: With dead ends: 2462 [2020-09-25 04:25:14,556 INFO L226 Difference]: Without dead ends: 1597 [2020-09-25 04:25:14,560 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:25:14,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1597 states. [2020-09-25 04:25:14,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1597 to 1379. [2020-09-25 04:25:14,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1379 states. [2020-09-25 04:25:14,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1379 states to 1379 states and 1720 transitions. [2020-09-25 04:25:14,615 INFO L78 Accepts]: Start accepts. Automaton has 1379 states and 1720 transitions. Word has length 168 [2020-09-25 04:25:14,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:25:14,616 INFO L479 AbstractCegarLoop]: Abstraction has 1379 states and 1720 transitions. [2020-09-25 04:25:14,616 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:25:14,616 INFO L276 IsEmpty]: Start isEmpty. Operand 1379 states and 1720 transitions. [2020-09-25 04:25:14,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-09-25 04:25:14,624 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:25:14,624 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 04:25:14,624 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 04:25:14,625 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:25:14,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:25:14,625 INFO L82 PathProgramCache]: Analyzing trace with hash -971073182, now seen corresponding path program 1 times [2020-09-25 04:25:14,625 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:25:14,626 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1077397001] [2020-09-25 04:25:14,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:25:14,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:14,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:14,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:15,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:15,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:15,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:15,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:15,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:15,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:18,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:19,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:19,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:19,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-09-25 04:25:19,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 04:25:19,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 04:25:19,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:19,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:19,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:25:19,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-09-25 04:25:19,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-09-25 04:25:19,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:25:19,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:25:19,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:19,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:19,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:19,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:25:19,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:19,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 04:25:19,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:19,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:19,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:25:19,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:25:19,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:25:19,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:19,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 04:25:19,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:19,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:19,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:19,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-25 04:25:19,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:19,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-09-25 04:25:19,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:19,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:19,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:25:19,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:25:19,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 04:25:19,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:20,031 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 34 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:25:20,033 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1077397001] [2020-09-25 04:25:20,033 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:25:20,034 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:25:20,034 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428195282] [2020-09-25 04:25:20,035 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:25:20,035 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:25:20,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:25:20,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:25:20,037 INFO L87 Difference]: Start difference. First operand 1379 states and 1720 transitions. Second operand 5 states. [2020-09-25 04:25:22,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:25:22,169 INFO L93 Difference]: Finished difference Result 3697 states and 4725 transitions. [2020-09-25 04:25:22,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:25:22,169 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 185 [2020-09-25 04:25:22,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:25:22,184 INFO L225 Difference]: With dead ends: 3697 [2020-09-25 04:25:22,184 INFO L226 Difference]: Without dead ends: 2342 [2020-09-25 04:25:22,191 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:25:22,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2342 states. [2020-09-25 04:25:22,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2342 to 2094. [2020-09-25 04:25:22,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2094 states. [2020-09-25 04:25:22,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2094 states to 2094 states and 2666 transitions. [2020-09-25 04:25:22,300 INFO L78 Accepts]: Start accepts. Automaton has 2094 states and 2666 transitions. Word has length 185 [2020-09-25 04:25:22,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:25:22,301 INFO L479 AbstractCegarLoop]: Abstraction has 2094 states and 2666 transitions. [2020-09-25 04:25:22,301 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:25:22,301 INFO L276 IsEmpty]: Start isEmpty. Operand 2094 states and 2666 transitions. [2020-09-25 04:25:22,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-09-25 04:25:22,311 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:25:22,311 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:25:22,312 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 04:25:22,312 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:25:22,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:25:22,312 INFO L82 PathProgramCache]: Analyzing trace with hash 860699330, now seen corresponding path program 1 times [2020-09-25 04:25:22,313 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:25:22,313 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1320921505] [2020-09-25 04:25:22,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:25:22,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:22,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:22,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:22,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:24,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:24,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:25,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:27,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:27,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 205 [2020-09-25 04:25:27,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 04:25:27,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-25 04:25:27,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:27,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:27,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:25:27,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 04:25:27,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 04:25:27,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:27,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:25:27,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:27,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:27,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:27,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:25:27,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:27,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 04:25:27,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:27,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:27,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:25:27,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:25:27,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:25:27,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:25:27,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 04:25:27,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:27,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:27,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:27,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 04:25:27,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:27,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 04:25:27,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:27,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:27,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:25:27,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:25:27,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 04:25:27,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:27,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 04:25:27,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:27,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:27,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:27,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 04:25:27,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:27,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-09-25 04:25:27,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:27,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:27,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:25:27,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:25:27,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 04:25:27,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:25:27,723 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 50 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:25:27,723 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1320921505] [2020-09-25 04:25:27,724 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:25:27,724 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:25:27,724 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476382378] [2020-09-25 04:25:27,725 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:25:27,725 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:25:27,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:25:27,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:25:27,726 INFO L87 Difference]: Start difference. First operand 2094 states and 2666 transitions. Second operand 7 states. [2020-09-25 04:25:30,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:25:30,038 INFO L93 Difference]: Finished difference Result 4632 states and 6089 transitions. [2020-09-25 04:25:30,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 04:25:30,039 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 192 [2020-09-25 04:25:30,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:25:30,056 INFO L225 Difference]: With dead ends: 4632 [2020-09-25 04:25:30,056 INFO L226 Difference]: Without dead ends: 2562 [2020-09-25 04:25:30,067 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 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 04:25:30,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2562 states. [2020-09-25 04:25:30,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2562 to 2427. [2020-09-25 04:25:30,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2427 states. [2020-09-25 04:25:30,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2427 states to 2427 states and 3095 transitions. [2020-09-25 04:25:30,165 INFO L78 Accepts]: Start accepts. Automaton has 2427 states and 3095 transitions. Word has length 192 [2020-09-25 04:25:30,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:25:30,166 INFO L479 AbstractCegarLoop]: Abstraction has 2427 states and 3095 transitions. [2020-09-25 04:25:30,166 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:25:30,166 INFO L276 IsEmpty]: Start isEmpty. Operand 2427 states and 3095 transitions. [2020-09-25 04:25:30,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-09-25 04:25:30,187 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:25:30,187 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:25:30,187 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 04:25:30,187 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:25:30,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:25:30,188 INFO L82 PathProgramCache]: Analyzing trace with hash -1724740063, now seen corresponding path program 1 times [2020-09-25 04:25:30,188 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:25:30,188 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1844190433] [2020-09-25 04:25:30,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:25:30,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:30,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:30,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:30,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:30,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:30,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:31,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:32,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:32,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:32,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:32,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:33,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:34,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:35,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:35,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 212 [2020-09-25 04:25:35,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 04:25:35,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 04:25:35,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:35,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:35,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:25:35,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-09-25 04:25:35,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 04:25:35,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:25:35,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:25:35,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:35,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:35,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:35,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:25:35,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:35,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 04:25:35,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:35,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:35,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:25:35,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:25:35,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:25:35,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:25:35,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 04:25:35,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:35,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:35,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:35,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 04:25:35,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:35,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-25 04:25:35,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:35,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:35,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:25:35,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:25:35,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 04:25:35,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:35,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 04:25:35,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:35,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:35,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:35,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 04:25:35,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:35,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-09-25 04:25:35,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:35,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:35,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:25:35,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:25:35,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 04:25:35,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 04:25:35,672 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 58 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:25:35,673 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1844190433] [2020-09-25 04:25:35,674 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:25:35,675 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:25:35,675 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119449443] [2020-09-25 04:25:35,676 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:25:35,676 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:25:35,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:25:35,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:25:35,677 INFO L87 Difference]: Start difference. First operand 2427 states and 3095 transitions. Second operand 7 states.