/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_label39.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 04:25:30,004 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 04:25:30,008 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 04:25:30,035 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 04:25:30,035 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 04:25:30,036 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 04:25:30,038 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 04:25:30,039 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 04:25:30,041 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 04:25:30,042 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 04:25:30,043 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 04:25:30,044 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 04:25:30,045 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 04:25:30,046 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 04:25:30,047 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 04:25:30,048 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 04:25:30,049 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 04:25:30,055 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 04:25:30,057 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 04:25:30,059 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 04:25:30,061 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 04:25:30,062 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 04:25:30,063 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 04:25:30,064 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 04:25:30,067 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 04:25:30,067 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 04:25:30,067 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 04:25:30,068 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 04:25:30,069 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 04:25:30,070 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 04:25:30,070 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 04:25:30,071 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 04:25:30,072 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 04:25:30,073 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 04:25:30,074 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 04:25:30,074 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 04:25:30,077 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 04:25:30,078 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 04:25:30,078 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 04:25:30,079 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 04:25:30,080 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 04:25:30,081 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 04:25:30,112 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 04:25:30,112 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 04:25:30,114 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 04:25:30,114 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 04:25:30,114 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 04:25:30,114 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 04:25:30,114 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 04:25:30,117 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 04:25:30,117 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 04:25:30,117 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 04:25:30,118 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 04:25:30,118 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 04:25:30,118 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 04:25:30,118 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 04:25:30,118 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 04:25:30,119 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 04:25:30,122 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 04:25:30,122 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 04:25:30,122 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 04:25:30,123 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 04:25:30,123 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 04:25:30,123 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:25:30,123 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 04:25:30,124 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 04:25:30,124 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 04:25:30,124 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 04:25:30,124 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 04:25:30,124 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 04:25:30,125 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 04:25:30,125 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 04:25:30,641 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 04:25:30,660 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 04:25:30,665 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 04:25:30,667 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 04:25:30,667 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 04:25:30,669 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label39.c [2020-09-25 04:25:30,764 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3c3c4f37e/38a3e6cca05c42bdb0e6855c5e398d63/FLAGb6e56a0d2 [2020-09-25 04:25:31,440 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 04:25:31,444 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label39.c [2020-09-25 04:25:31,470 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3c3c4f37e/38a3e6cca05c42bdb0e6855c5e398d63/FLAGb6e56a0d2 [2020-09-25 04:25:31,646 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3c3c4f37e/38a3e6cca05c42bdb0e6855c5e398d63 [2020-09-25 04:25:31,661 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 04:25:31,668 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 04:25:31,669 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 04:25:31,669 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 04:25:31,673 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 04:25:31,675 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:25:31" (1/1) ... [2020-09-25 04:25:31,679 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@245d8fce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:25:31, skipping insertion in model container [2020-09-25 04:25:31,679 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:25:31" (1/1) ... [2020-09-25 04:25:31,689 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 04:25:31,745 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 04:25:32,262 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:25:32,275 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 04:25:32,499 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:25:32,522 INFO L208 MainTranslator]: Completed translation [2020-09-25 04:25:32,523 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:25:32 WrapperNode [2020-09-25 04:25:32,523 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 04:25:32,524 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 04:25:32,524 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 04:25:32,524 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 04:25:32,540 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:25:32" (1/1) ... [2020-09-25 04:25:32,540 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:25:32" (1/1) ... [2020-09-25 04:25:32,560 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:25:32" (1/1) ... [2020-09-25 04:25:32,560 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:25:32" (1/1) ... [2020-09-25 04:25:32,603 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:25:32" (1/1) ... [2020-09-25 04:25:32,628 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:25:32" (1/1) ... [2020-09-25 04:25:32,633 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:25:32" (1/1) ... [2020-09-25 04:25:32,641 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 04:25:32,641 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 04:25:32,641 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 04:25:32,642 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 04:25:32,643 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:25:32" (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 04:25:32,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 04:25:32,725 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 04:25:32,725 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 04:25:32,725 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 04:25:32,725 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 04:25:32,725 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 04:25:32,725 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 04:25:32,725 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 04:25:32,726 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 04:25:32,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 04:25:32,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 04:25:34,156 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 04:25:34,157 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 04:25:34,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:25:34 BoogieIcfgContainer [2020-09-25 04:25:34,173 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 04:25:34,175 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 04:25:34,175 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 04:25:34,181 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 04:25:34,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:25:31" (1/3) ... [2020-09-25 04:25:34,183 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68751017 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:25:34, skipping insertion in model container [2020-09-25 04:25:34,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:25:32" (2/3) ... [2020-09-25 04:25:34,184 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68751017 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:25:34, skipping insertion in model container [2020-09-25 04:25:34,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:25:34" (3/3) ... [2020-09-25 04:25:34,186 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label39.c [2020-09-25 04:25:34,198 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 04:25:34,214 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 04:25:34,237 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 04:25:34,282 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 04:25:34,283 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 04:25:34,283 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 04:25:34,283 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 04:25:34,284 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 04:25:34,284 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 04:25:34,284 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 04:25:34,284 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 04:25:34,327 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 04:25:34,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-09-25 04:25:34,353 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:25:34,354 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, 1, 1, 1, 1, 1, 1] [2020-09-25 04:25:34,355 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:25:34,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:25:34,362 INFO L82 PathProgramCache]: Analyzing trace with hash -2068005297, now seen corresponding path program 1 times [2020-09-25 04:25:34,371 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:25:34,371 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [866462069] [2020-09-25 04:25:34,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:25:34,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:34,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:35,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:35,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:35,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:37,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:37,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:39,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:39,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:39,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-09-25 04:25:39,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 04:25:39,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5076 [2020-09-25 04:25:39,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:39,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:39,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:25:39,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 04:25:39,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-09-25 04:25:39,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 04:25:39,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:25:39,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:39,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:40,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:40,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:25:40,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:40,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-09-25 04:25:40,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:40,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:40,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:25:40,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:25:40,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 04:25:40,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:40,092 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 04:25:40,093 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [866462069] [2020-09-25 04:25:40,095 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:25:40,096 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 04:25:40,097 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821656079] [2020-09-25 04:25:40,104 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 04:25:40,104 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:25:40,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 04:25:40,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 04:25:40,125 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 04:25:42,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:25:42,484 INFO L93 Difference]: Finished difference Result 1268 states and 1667 transitions. [2020-09-25 04:25:42,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 04:25:42,489 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 160 [2020-09-25 04:25:42,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:25:42,522 INFO L225 Difference]: With dead ends: 1268 [2020-09-25 04:25:42,522 INFO L226 Difference]: Without dead ends: 694 [2020-09-25 04:25:42,531 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 04:25:42,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2020-09-25 04:25:42,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 603. [2020-09-25 04:25:42,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 04:25:42,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 719 transitions. [2020-09-25 04:25:42,638 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 719 transitions. Word has length 160 [2020-09-25 04:25:42,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:25:42,639 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 719 transitions. [2020-09-25 04:25:42,639 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 04:25:42,640 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 719 transitions. [2020-09-25 04:25:42,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-09-25 04:25:42,647 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:25:42,648 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, 1, 1, 1, 1, 1, 1] [2020-09-25 04:25:42,648 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 04:25:42,648 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:25:42,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:25:42,649 INFO L82 PathProgramCache]: Analyzing trace with hash 305686135, now seen corresponding path program 1 times [2020-09-25 04:25:42,649 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:25:42,650 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [409480061] [2020-09-25 04:25:42,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:25:42,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:42,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:42,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:43,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:43,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:47,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:47,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-09-25 04:25:47,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 04:25:47,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 04:25:47,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:47,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:47,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:25:47,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 04:25:47,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 04:25:47,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:47,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:25:47,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:47,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:47,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:47,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:25:47,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:47,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 04:25:47,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:47,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:47,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:25:47,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:25:47,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 04:25:47,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:47,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 04:25:47,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:47,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:47,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:47,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 04:25:47,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:47,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-25 04:25:47,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:47,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:47,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:25:47,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:25:47,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 04:25:47,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:48,065 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 04:25:48,065 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [409480061] [2020-09-25 04:25:48,066 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:25:48,066 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 04:25:48,066 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467249546] [2020-09-25 04:25:48,071 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:25:48,071 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:25:48,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:25:48,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:25:48,072 INFO L87 Difference]: Start difference. First operand 603 states and 719 transitions. Second operand 7 states. [2020-09-25 04:25:50,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:25:50,377 INFO L93 Difference]: Finished difference Result 1538 states and 1910 transitions. [2020-09-25 04:25:50,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 04:25:50,378 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 181 [2020-09-25 04:25:50,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:25:50,391 INFO L225 Difference]: With dead ends: 1538 [2020-09-25 04:25:50,391 INFO L226 Difference]: Without dead ends: 959 [2020-09-25 04:25:50,396 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 04:25:50,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2020-09-25 04:25:50,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 901. [2020-09-25 04:25:50,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 901 states. [2020-09-25 04:25:50,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 1109 transitions. [2020-09-25 04:25:50,470 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 1109 transitions. Word has length 181 [2020-09-25 04:25:50,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:25:50,470 INFO L479 AbstractCegarLoop]: Abstraction has 901 states and 1109 transitions. [2020-09-25 04:25:50,471 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:25:50,471 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 1109 transitions. [2020-09-25 04:25:50,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-09-25 04:25:50,477 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:25:50,477 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, 1, 1, 1, 1, 1, 1] [2020-09-25 04:25:50,478 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 04:25:50,478 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:25:50,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:25:50,478 INFO L82 PathProgramCache]: Analyzing trace with hash -166930083, now seen corresponding path program 1 times [2020-09-25 04:25:50,479 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:25:50,479 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [600373194] [2020-09-25 04:25:50,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:25:50,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:50,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:50,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:51,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:51,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:52,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:53,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:54,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:55,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:55,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:55,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-09-25 04:25:55,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 04:25:55,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-09-25 04:25:55,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:55,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:55,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:25:55,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 04:25:55,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 04:25:55,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 04:25:55,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:25:55,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:55,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:55,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:55,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:25:55,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:55,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 04:25:55,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:55,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:55,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:25:55,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:25:55,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 04:25:55,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:55,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 04:25:55,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:55,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:55,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:55,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:25:55,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:55,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-25 04:25:55,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:55,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:55,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:25:55,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:25:55,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 04:25:55,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:55,803 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 04:25:55,803 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [600373194] [2020-09-25 04:25:55,804 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:25:55,804 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 04:25:55,804 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40180460] [2020-09-25 04:25:55,806 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:25:55,807 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:25:55,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:25:55,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:25:55,808 INFO L87 Difference]: Start difference. First operand 901 states and 1109 transitions. Second operand 7 states. [2020-09-25 04:25:58,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:25:58,260 INFO L93 Difference]: Finished difference Result 2544 states and 3295 transitions. [2020-09-25 04:25:58,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 04:25:58,261 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 182 [2020-09-25 04:25:58,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:25:58,275 INFO L225 Difference]: With dead ends: 2544 [2020-09-25 04:25:58,275 INFO L226 Difference]: Without dead ends: 1667 [2020-09-25 04:25:58,282 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 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 04:25:58,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1667 states. [2020-09-25 04:25:58,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1667 to 1554. [2020-09-25 04:25:58,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1554 states. [2020-09-25 04:25:58,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1554 states to 1554 states and 1941 transitions. [2020-09-25 04:25:58,375 INFO L78 Accepts]: Start accepts. Automaton has 1554 states and 1941 transitions. Word has length 182 [2020-09-25 04:25:58,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:25:58,376 INFO L479 AbstractCegarLoop]: Abstraction has 1554 states and 1941 transitions. [2020-09-25 04:25:58,376 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:25:58,376 INFO L276 IsEmpty]: Start isEmpty. Operand 1554 states and 1941 transitions. [2020-09-25 04:25:58,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-09-25 04:25:58,385 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:25:58,385 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, 1, 1, 1, 1, 1, 1] [2020-09-25 04:25:58,385 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 04:25:58,385 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:25:58,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:25:58,386 INFO L82 PathProgramCache]: Analyzing trace with hash 621217626, now seen corresponding path program 1 times [2020-09-25 04:25:58,386 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:25:58,396 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1312328125] [2020-09-25 04:25:58,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:25:58,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:58,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:58,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:58,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:59,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:00,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:01,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:01,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:03,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:03,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-09-25 04:26:03,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 04:26:03,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 04:26:03,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:03,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:03,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:26:03,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-09-25 04:26:03,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-09-25 04:26:03,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:03,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:26:03,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:03,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:03,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:03,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:26:03,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:03,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 04:26:03,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:03,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:03,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:26:03,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:26:03,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:26:03,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:03,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 04:26:03,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:03,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:03,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:03,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:26:03,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:03,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-25 04:26:03,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:03,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:03,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:26:03,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:26:03,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 04:26:03,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:03,756 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:26:03,757 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1312328125] [2020-09-25 04:26:03,757 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:26:03,757 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:26:03,757 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412004271] [2020-09-25 04:26:03,758 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:26:03,759 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:26:03,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:26:03,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:26:03,760 INFO L87 Difference]: Start difference. First operand 1554 states and 1941 transitions. Second operand 5 states. [2020-09-25 04:26:06,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:26:06,123 INFO L93 Difference]: Finished difference Result 4193 states and 5395 transitions. [2020-09-25 04:26:06,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:26:06,124 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 189 [2020-09-25 04:26:06,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:26:06,144 INFO L225 Difference]: With dead ends: 4193 [2020-09-25 04:26:06,145 INFO L226 Difference]: Without dead ends: 2663 [2020-09-25 04:26:06,152 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 04:26:06,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2663 states. [2020-09-25 04:26:06,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2663 to 1991. [2020-09-25 04:26:06,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1991 states. [2020-09-25 04:26:06,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1991 states to 1991 states and 2518 transitions. [2020-09-25 04:26:06,243 INFO L78 Accepts]: Start accepts. Automaton has 1991 states and 2518 transitions. Word has length 189 [2020-09-25 04:26:06,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:26:06,245 INFO L479 AbstractCegarLoop]: Abstraction has 1991 states and 2518 transitions. [2020-09-25 04:26:06,245 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:26:06,246 INFO L276 IsEmpty]: Start isEmpty. Operand 1991 states and 2518 transitions. [2020-09-25 04:26:06,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-09-25 04:26:06,256 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:26:06,256 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, 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 04:26:06,257 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 04:26:06,257 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:26:06,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:26:06,257 INFO L82 PathProgramCache]: Analyzing trace with hash -1816533928, now seen corresponding path program 1 times [2020-09-25 04:26:06,258 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:26:06,258 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1185209478] [2020-09-25 04:26:06,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:26:06,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:06,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:06,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:06,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:06,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:06,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:06,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:07,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:07,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:10,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:11,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:11,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-09-25 04:26:11,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 04:26:11,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-25 04:26:11,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:11,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:11,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:26:11,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-09-25 04:26:11,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 147 [2020-09-25 04:26:11,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:26:11,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:26:11,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:11,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:11,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:11,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:26:11,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:11,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 04:26:11,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:11,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:11,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:26:11,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:26:11,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:26:11,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:11,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 04:26:11,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:11,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:11,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:11,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 04:26:11,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:11,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 04:26:11,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:11,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:11,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:26:11,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:26:11,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 04:26:11,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:11,616 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 04:26:11,616 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1185209478] [2020-09-25 04:26:11,617 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:26:11,617 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:26:11,617 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809586975] [2020-09-25 04:26:11,618 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:26:11,618 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:26:11,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:26:11,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:26:11,619 INFO L87 Difference]: Start difference. First operand 1991 states and 2518 transitions. Second operand 5 states. [2020-09-25 04:26:13,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:26:13,681 INFO L93 Difference]: Finished difference Result 4677 states and 6032 transitions. [2020-09-25 04:26:13,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:26:13,682 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 190 [2020-09-25 04:26:13,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:26:13,693 INFO L225 Difference]: With dead ends: 4677 [2020-09-25 04:26:13,693 INFO L226 Difference]: Without dead ends: 1947 [2020-09-25 04:26:13,703 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 2 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 04:26:13,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1947 states. [2020-09-25 04:26:13,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1947 to 1937. [2020-09-25 04:26:13,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1937 states. [2020-09-25 04:26:13,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1937 states to 1937 states and 2383 transitions. [2020-09-25 04:26:13,756 INFO L78 Accepts]: Start accepts. Automaton has 1937 states and 2383 transitions. Word has length 190 [2020-09-25 04:26:13,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:26:13,757 INFO L479 AbstractCegarLoop]: Abstraction has 1937 states and 2383 transitions. [2020-09-25 04:26:13,757 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:26:13,757 INFO L276 IsEmpty]: Start isEmpty. Operand 1937 states and 2383 transitions. [2020-09-25 04:26:13,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-09-25 04:26:13,766 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:26:13,767 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:26:13,767 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 04:26:13,767 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:26:13,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:26:13,768 INFO L82 PathProgramCache]: Analyzing trace with hash -220137183, now seen corresponding path program 1 times [2020-09-25 04:26:13,768 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:26:13,768 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [649899926] [2020-09-25 04:26:13,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:26:13,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:13,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:13,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:14,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:14,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:14,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:14,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:16,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:16,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:17,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:18,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:18,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:18,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:18,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-09-25 04:26:18,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 04:26:18,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5052 [2020-09-25 04:26:18,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:18,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:18,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:26:18,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-09-25 04:26:18,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 147 [2020-09-25 04:26:18,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:26:18,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:26:18,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:18,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:19,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:19,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:26:19,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:19,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 04:26:19,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:19,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:19,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:26:19,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:26:19,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:26:19,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:19,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 04:26:19,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:19,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:19,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:19,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-25 04:26:19,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:19,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-25 04:26:19,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:19,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:19,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:26:19,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:26:19,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 04:26:19,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:19,155 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 33 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:26:19,156 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [649899926] [2020-09-25 04:26:19,156 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:26:19,156 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 04:26:19,156 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488976426] [2020-09-25 04:26:19,157 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 04:26:19,157 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:26:19,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 04:26:19,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:26:19,158 INFO L87 Difference]: Start difference. First operand 1937 states and 2383 transitions. Second operand 6 states. [2020-09-25 04:26:21,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:26:21,020 INFO L93 Difference]: Finished difference Result 4870 states and 6128 transitions. [2020-09-25 04:26:21,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:26:21,025 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 203 [2020-09-25 04:26:21,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:26:21,041 INFO L225 Difference]: With dead ends: 4870 [2020-09-25 04:26:21,042 INFO L226 Difference]: Without dead ends: 2957 [2020-09-25 04:26:21,049 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:26:21,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2957 states. [2020-09-25 04:26:21,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2957 to 2793. [2020-09-25 04:26:21,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2793 states. [2020-09-25 04:26:21,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2793 states to 2793 states and 3478 transitions. [2020-09-25 04:26:21,123 INFO L78 Accepts]: Start accepts. Automaton has 2793 states and 3478 transitions. Word has length 203 [2020-09-25 04:26:21,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:26:21,124 INFO L479 AbstractCegarLoop]: Abstraction has 2793 states and 3478 transitions. [2020-09-25 04:26:21,124 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 04:26:21,124 INFO L276 IsEmpty]: Start isEmpty. Operand 2793 states and 3478 transitions. [2020-09-25 04:26:21,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-09-25 04:26:21,137 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:26:21,138 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, 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] [2020-09-25 04:26:21,138 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 04:26:21,138 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:26:21,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:26:21,139 INFO L82 PathProgramCache]: Analyzing trace with hash -1773335206, now seen corresponding path program 1 times [2020-09-25 04:26:21,139 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:26:21,139 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [246982886] [2020-09-25 04:26:21,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:26:21,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:21,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking...