/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=0.6 --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 06:41:57,069 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 06:41:57,073 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 06:41:57,117 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 06:41:57,117 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 06:41:57,118 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 06:41:57,119 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 06:41:57,121 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 06:41:57,123 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 06:41:57,124 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 06:41:57,125 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 06:41:57,126 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 06:41:57,127 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 06:41:57,128 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 06:41:57,129 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 06:41:57,130 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 06:41:57,131 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 06:41:57,132 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 06:41:57,134 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 06:41:57,136 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 06:41:57,137 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 06:41:57,139 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 06:41:57,140 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 06:41:57,141 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 06:41:57,144 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 06:41:57,144 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 06:41:57,145 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 06:41:57,146 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 06:41:57,146 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 06:41:57,147 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 06:41:57,148 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 06:41:57,149 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 06:41:57,149 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 06:41:57,150 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 06:41:57,152 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 06:41:57,152 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 06:41:57,153 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 06:41:57,153 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 06:41:57,153 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 06:41:57,154 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 06:41:57,155 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 06:41:57,156 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 06:41:57,182 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 06:41:57,182 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 06:41:57,184 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 06:41:57,184 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 06:41:57,184 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 06:41:57,184 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 06:41:57,185 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 06:41:57,185 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 06:41:57,185 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 06:41:57,185 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 06:41:57,185 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 06:41:57,186 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 06:41:57,186 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 06:41:57,186 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 06:41:57,186 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 06:41:57,186 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 06:41:57,186 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 06:41:57,187 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 06:41:57,187 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 06:41:57,187 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 06:41:57,187 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 06:41:57,188 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:41:57,188 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 06:41:57,188 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 06:41:57,188 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 06:41:57,189 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 06:41:57,189 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 06:41:57,189 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 06:41:57,189 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 06:41:57,189 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=0.6;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=0.6;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=0.6;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=0.6;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=0.6;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=0.6;log-additional-information=true; [2020-09-25 06:41:57,654 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 06:41:57,677 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 06:41:57,685 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 06:41:57,688 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 06:41:57,690 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 06:41:57,691 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label10.c [2020-09-25 06:41:57,784 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5a814ce19/e6e7e0ce4f184b3f83eb45f9461ec84d/FLAG160cd8c4b [2020-09-25 06:41:58,468 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 06:41:58,468 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label10.c [2020-09-25 06:41:58,481 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5a814ce19/e6e7e0ce4f184b3f83eb45f9461ec84d/FLAG160cd8c4b [2020-09-25 06:41:58,683 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5a814ce19/e6e7e0ce4f184b3f83eb45f9461ec84d [2020-09-25 06:41:58,695 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 06:41:58,700 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 06:41:58,701 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 06:41:58,701 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 06:41:58,706 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 06:41:58,707 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:41:58" (1/1) ... [2020-09-25 06:41:58,712 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66145f2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:41:58, skipping insertion in model container [2020-09-25 06:41:58,712 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:41:58" (1/1) ... [2020-09-25 06:41:58,721 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 06:41:58,780 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 06:41:59,245 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:41:59,251 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 06:41:59,465 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:41:59,485 INFO L208 MainTranslator]: Completed translation [2020-09-25 06:41:59,486 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:41:59 WrapperNode [2020-09-25 06:41:59,486 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 06:41:59,487 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 06:41:59,487 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 06:41:59,487 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 06:41:59,506 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:41:59" (1/1) ... [2020-09-25 06:41:59,506 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:41:59" (1/1) ... [2020-09-25 06:41:59,538 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:41:59" (1/1) ... [2020-09-25 06:41:59,538 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:41:59" (1/1) ... [2020-09-25 06:41:59,582 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:41:59" (1/1) ... [2020-09-25 06:41:59,600 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:41:59" (1/1) ... [2020-09-25 06:41:59,604 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:41:59" (1/1) ... [2020-09-25 06:41:59,611 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 06:41:59,612 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 06:41:59,612 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 06:41:59,612 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 06:41:59,617 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:41:59" (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 06:41:59,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 06:41:59,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 06:41:59,692 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 06:41:59,692 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 06:41:59,692 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 06:41:59,693 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 06:41:59,693 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 06:41:59,693 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 06:41:59,693 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 06:41:59,693 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 06:41:59,694 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 06:42:01,074 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 06:42:01,075 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 06:42:01,084 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:42:01 BoogieIcfgContainer [2020-09-25 06:42:01,084 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 06:42:01,086 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 06:42:01,086 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 06:42:01,090 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 06:42:01,090 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 06:41:58" (1/3) ... [2020-09-25 06:42:01,091 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c32840c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:42:01, skipping insertion in model container [2020-09-25 06:42:01,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:41:59" (2/3) ... [2020-09-25 06:42:01,092 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c32840c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:42:01, skipping insertion in model container [2020-09-25 06:42:01,092 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:42:01" (3/3) ... [2020-09-25 06:42:01,094 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label10.c [2020-09-25 06:42:01,106 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 06:42:01,118 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 06:42:01,141 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 06:42:01,176 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 06:42:01,177 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 06:42:01,177 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 06:42:01,177 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 06:42:01,177 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 06:42:01,177 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 06:42:01,177 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 06:42:01,177 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 06:42:01,208 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 06:42:01,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-09-25 06:42:01,240 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:42:01,241 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 06:42:01,242 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:42:01,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:42:01,249 INFO L82 PathProgramCache]: Analyzing trace with hash 346455735, now seen corresponding path program 1 times [2020-09-25 06:42:01,259 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:42:01,260 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [798656846] [2020-09-25 06:42:01,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:42:01,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:01,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:02,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:02,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:03,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:05,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:06,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:06,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-09-25 06:42:06,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 06:42:06,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-25 06:42:06,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:06,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:06,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:42:06,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 06:42:06,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-09-25 06:42:06,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 06:42:06,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:42:06,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:06,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:06,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:06,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:42:06,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:06,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 06:42:06,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:06,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:06,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:42:06,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:42:06,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 06:42:06,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:42:06,982 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 06:42:06,983 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [798656846] [2020-09-25 06:42:06,986 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:42:06,987 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 06:42:06,988 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344723505] [2020-09-25 06:42:06,999 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 06:42:07,000 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:42:07,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 06:42:07,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 06:42:07,027 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 06:42:09,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:42:09,183 INFO L93 Difference]: Finished difference Result 1212 states and 1611 transitions. [2020-09-25 06:42:09,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 06:42:09,185 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 138 [2020-09-25 06:42:09,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:42:09,219 INFO L225 Difference]: With dead ends: 1212 [2020-09-25 06:42:09,219 INFO L226 Difference]: Without dead ends: 638 [2020-09-25 06:42:09,228 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 06:42:09,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2020-09-25 06:42:09,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 603. [2020-09-25 06:42:09,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 06:42:09,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 719 transitions. [2020-09-25 06:42:09,329 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 719 transitions. Word has length 138 [2020-09-25 06:42:09,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:42:09,331 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 719 transitions. [2020-09-25 06:42:09,331 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 06:42:09,331 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 719 transitions. [2020-09-25 06:42:09,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-09-25 06:42:09,339 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:42:09,340 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 06:42:09,340 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 06:42:09,341 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:42:09,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:42:09,341 INFO L82 PathProgramCache]: Analyzing trace with hash 216020424, now seen corresponding path program 1 times [2020-09-25 06:42:09,342 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:42:09,342 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [571871917] [2020-09-25 06:42:09,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:42:09,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:09,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:09,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:10,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:10,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:10,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:10,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:12,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:12,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:12,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:14,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:14,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:14,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:14,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-09-25 06:42:14,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 06:42:14,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-09-25 06:42:14,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:14,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:14,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:42:14,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-25 06:42:14,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-09-25 06:42:14,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:14,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:42:14,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:14,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:14,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:14,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:42:14,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:14,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 06:42:14,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:14,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:14,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:42:14,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:42:14,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:42:14,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-09-25 06:42:14,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 06:42:14,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:14,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:14,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:14,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 06:42:14,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:14,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 06:42:14,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:14,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:14,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:42:14,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:42:14,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 06:42:14,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:14,714 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 06:42:14,715 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [571871917] [2020-09-25 06:42:14,715 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:42:14,716 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 06:42:14,716 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16725539] [2020-09-25 06:42:14,720 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:42:14,721 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:42:14,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:42:14,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:42:14,722 INFO L87 Difference]: Start difference. First operand 603 states and 719 transitions. Second operand 5 states. [2020-09-25 06:42:16,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:42:16,826 INFO L93 Difference]: Finished difference Result 1559 states and 1931 transitions. [2020-09-25 06:42:16,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:42:16,827 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 159 [2020-09-25 06:42:16,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:42:16,835 INFO L225 Difference]: With dead ends: 1559 [2020-09-25 06:42:16,835 INFO L226 Difference]: Without dead ends: 980 [2020-09-25 06:42:16,839 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 06:42:16,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 980 states. [2020-09-25 06:42:16,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 980 to 889. [2020-09-25 06:42:16,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 889 states. [2020-09-25 06:42:16,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 889 states to 889 states and 1094 transitions. [2020-09-25 06:42:16,904 INFO L78 Accepts]: Start accepts. Automaton has 889 states and 1094 transitions. Word has length 159 [2020-09-25 06:42:16,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:42:16,905 INFO L479 AbstractCegarLoop]: Abstraction has 889 states and 1094 transitions. [2020-09-25 06:42:16,905 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:42:16,905 INFO L276 IsEmpty]: Start isEmpty. Operand 889 states and 1094 transitions. [2020-09-25 06:42:16,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-09-25 06:42:16,912 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:42:16,912 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 06:42:16,913 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 06:42:16,913 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:42:16,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:42:16,914 INFO L82 PathProgramCache]: Analyzing trace with hash -1520709248, now seen corresponding path program 1 times [2020-09-25 06:42:16,914 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:42:16,914 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1445824723] [2020-09-25 06:42:16,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:42:16,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:17,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:17,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:17,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:17,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:17,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:17,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:17,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:18,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:20,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:20,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:20,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:21,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:21,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-09-25 06:42:21,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 06:42:21,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 06:42:21,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:21,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:21,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:42:21,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-09-25 06:42:21,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-09-25 06:42:21,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:22,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:42:22,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:22,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:22,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:22,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:42:22,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:22,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 06:42:22,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:22,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:22,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:42:22,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:42:22,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:42:22,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:22,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 06:42:22,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:22,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:22,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:22,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 06:42:22,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:22,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-25 06:42:22,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:22,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:22,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:42:22,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:42:22,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 06:42:22,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:22,263 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 06:42:22,264 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1445824723] [2020-09-25 06:42:22,264 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:42:22,265 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 06:42:22,265 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832762250] [2020-09-25 06:42:22,266 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:42:22,266 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:42:22,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:42:22,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:42:22,267 INFO L87 Difference]: Start difference. First operand 889 states and 1094 transitions. Second operand 5 states. [2020-09-25 06:42:24,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:42:24,568 INFO L93 Difference]: Finished difference Result 2462 states and 3119 transitions. [2020-09-25 06:42:24,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:42:24,571 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 168 [2020-09-25 06:42:24,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:42:24,584 INFO L225 Difference]: With dead ends: 2462 [2020-09-25 06:42:24,585 INFO L226 Difference]: Without dead ends: 1597 [2020-09-25 06:42:24,588 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 06:42:24,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1597 states. [2020-09-25 06:42:24,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1597 to 1379. [2020-09-25 06:42:24,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1379 states. [2020-09-25 06:42:24,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1379 states to 1379 states and 1720 transitions. [2020-09-25 06:42:24,668 INFO L78 Accepts]: Start accepts. Automaton has 1379 states and 1720 transitions. Word has length 168 [2020-09-25 06:42:24,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:42:24,669 INFO L479 AbstractCegarLoop]: Abstraction has 1379 states and 1720 transitions. [2020-09-25 06:42:24,669 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:42:24,670 INFO L276 IsEmpty]: Start isEmpty. Operand 1379 states and 1720 transitions. [2020-09-25 06:42:24,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-09-25 06:42:24,679 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:42:24,680 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 06:42:24,680 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 06:42:24,680 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:42:24,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:42:24,681 INFO L82 PathProgramCache]: Analyzing trace with hash -971073182, now seen corresponding path program 1 times [2020-09-25 06:42:24,682 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:42:24,682 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1445506269] [2020-09-25 06:42:24,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:42:24,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:24,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:24,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:25,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:25,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:25,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:25,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:26,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:26,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:29,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:29,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:29,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:29,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-09-25 06:42:29,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 06:42:29,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 06:42:29,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:29,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:29,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:42:29,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-09-25 06:42:29,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-09-25 06:42:29,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:29,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:42:29,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:29,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:29,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:29,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:42:29,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:29,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 06:42:29,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:29,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:29,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:42:29,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:42:29,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:42:29,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:29,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 06:42:29,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:29,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:30,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:30,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-25 06:42:30,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:30,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-25 06:42:30,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:30,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:30,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:42:30,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:42:30,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 06:42:30,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:30,125 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 06:42:30,127 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1445506269] [2020-09-25 06:42:30,128 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:42:30,128 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 06:42:30,129 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805085130] [2020-09-25 06:42:30,129 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:42:30,130 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:42:30,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:42:30,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:42:30,132 INFO L87 Difference]: Start difference. First operand 1379 states and 1720 transitions. Second operand 5 states. [2020-09-25 06:42:32,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:42:32,065 INFO L93 Difference]: Finished difference Result 3697 states and 4725 transitions. [2020-09-25 06:42:32,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:42:32,068 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 185 [2020-09-25 06:42:32,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:42:32,087 INFO L225 Difference]: With dead ends: 3697 [2020-09-25 06:42:32,087 INFO L226 Difference]: Without dead ends: 2342 [2020-09-25 06:42:32,094 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 06:42:32,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2342 states. [2020-09-25 06:42:32,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2342 to 2094. [2020-09-25 06:42:32,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2094 states. [2020-09-25 06:42:32,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2094 states to 2094 states and 2666 transitions. [2020-09-25 06:42:32,186 INFO L78 Accepts]: Start accepts. Automaton has 2094 states and 2666 transitions. Word has length 185 [2020-09-25 06:42:32,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:42:32,187 INFO L479 AbstractCegarLoop]: Abstraction has 2094 states and 2666 transitions. [2020-09-25 06:42:32,187 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:42:32,187 INFO L276 IsEmpty]: Start isEmpty. Operand 2094 states and 2666 transitions. [2020-09-25 06:42:32,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-09-25 06:42:32,198 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:42:32,198 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 06:42:32,198 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 06:42:32,199 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:42:32,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:42:32,199 INFO L82 PathProgramCache]: Analyzing trace with hash 860699330, now seen corresponding path program 1 times [2020-09-25 06:42:32,199 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:42:32,200 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [324952105] [2020-09-25 06:42:32,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:42:32,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:32,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:32,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:32,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:34,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:34,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:35,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:37,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:37,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 205 [2020-09-25 06:42:37,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 06:42:37,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-09-25 06:42:37,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:37,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:37,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:42:37,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 06:42:37,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 06:42:37,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:42:37,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:42:37,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:37,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:37,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:37,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:42:37,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:37,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 06:42:37,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:37,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:37,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:42:37,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:42:37,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:42:37,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:42:37,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 06:42:37,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:37,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:37,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:37,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 06:42:37,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:37,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 06:42:37,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:37,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:37,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:42:37,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:42:37,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:42:37,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:42:37,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 06:42:37,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:37,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:37,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:37,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 06:42:37,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:37,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-09-25 06:42:37,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:37,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:37,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:42:37,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:42:37,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 06:42:37,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:42:37,582 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 06:42:37,583 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [324952105] [2020-09-25 06:42:37,583 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:42:37,583 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 06:42:37,583 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111211631] [2020-09-25 06:42:37,584 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:42:37,584 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:42:37,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:42:37,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:42:37,584 INFO L87 Difference]: Start difference. First operand 2094 states and 2666 transitions. Second operand 7 states. [2020-09-25 06:42:39,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:42:39,886 INFO L93 Difference]: Finished difference Result 4632 states and 6089 transitions. [2020-09-25 06:42:39,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 06:42:39,887 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 192 [2020-09-25 06:42:39,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:42:39,904 INFO L225 Difference]: With dead ends: 4632 [2020-09-25 06:42:39,905 INFO L226 Difference]: Without dead ends: 2562 [2020-09-25 06:42:39,917 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 06:42:39,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2562 states. [2020-09-25 06:42:40,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2562 to 2427. [2020-09-25 06:42:40,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2427 states. [2020-09-25 06:42:40,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2427 states to 2427 states and 3095 transitions. [2020-09-25 06:42:40,034 INFO L78 Accepts]: Start accepts. Automaton has 2427 states and 3095 transitions. Word has length 192 [2020-09-25 06:42:40,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:42:40,035 INFO L479 AbstractCegarLoop]: Abstraction has 2427 states and 3095 transitions. [2020-09-25 06:42:40,035 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:42:40,035 INFO L276 IsEmpty]: Start isEmpty. Operand 2427 states and 3095 transitions. [2020-09-25 06:42:40,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-09-25 06:42:40,049 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:42:40,050 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 06:42:40,050 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 06:42:40,050 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:42:40,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:42:40,051 INFO L82 PathProgramCache]: Analyzing trace with hash -1724740063, now seen corresponding path program 1 times [2020-09-25 06:42:40,051 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:42:40,051 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2090548498] [2020-09-25 06:42:40,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:42:40,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:40,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:40,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:40,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:40,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:40,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:41,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:42,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:42,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:42,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:42,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:43,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:43,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:45,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:45,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 212 [2020-09-25 06:42:45,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 06:42:45,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-09-25 06:42:45,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:45,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:45,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:42:45,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-09-25 06:42:45,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 06:42:45,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:45,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:42:45,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:45,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:45,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:45,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:42:45,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:45,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 06:42:45,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:45,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:45,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:42:45,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:42:45,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:42:45,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:42:45,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 06:42:45,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:45,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:45,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:45,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 06:42:45,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:45,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 06:42:45,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:45,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:45,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:42:45,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:42:45,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 06:42:45,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:42:45,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 06:42:45,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat